AN EXPERIENCE OF DGA MONITORING ON POWER TRANSFORMERS.

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INVITED SPEAKERS

08:30-09:00 Opening Ceremony Paiknam Concert Hall

Opening Address

Prof. Ja-Yoon Koo, ISH2013 Organizing Committee Chairman, Hanyang University Prof. Ernst Gockenbach, International Steering Committee Chairman, Germany Congratulatory Remarks

Dr. Jae-Hong Kim, Vice Minister for Industry and Technology, Ministry of Trade, Industry and Energy (MOTIE), Republic of Korea

Mr. Hwan-Eik Cho, President and Chief Executive Officer of Korea Electric Power Corp.(KEPCO) Mr. Duck-Ho Lim, President of Hanyang University

09:00-09:20 Break

09:20-10:10 Keynote Lecture 1 Paiknam Concert Hall

User Perspective on the Application of New Developments in High Voltage Technologies Mr. Mark Waldron (National Grid, UK Chairman, CIGRE Technical Committee)

Insulation System under HVDC Stress

Prof. Josef Kindersberger (Technical University of Munich, Germany)

Simulation Technologies for High Power Apparatus

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SESSION OA1: Electro-magnetic Field 1

Monday 26 August 2013, 13:30-15:00 HIT 612

[OA1-01] Research on the Electric Field Controlling for the Arc-chute of High Voltage SF6 Circuit Breaker C. Y. Peng* (Shanghai Tongji University, China), L. J. Jin, B. N. Zhao, W. H. Zhang

[OA1-02] Optimal Electric Field Performance of EHV Transmission Lines Using Ground Shield Conductors M. A. Abouelatta* (Benha University- Shoubra Faculty of Engineering, Egypt)

[OA1-03] Numerical Modeling and Design Evaluation of High Voltage Laboratory A. Pradeep* (BHEL R&D, India)

[OA1-04] Electrostatic Field Simulation Considerations for a 1000 kV Reference Voltage Divider J Hällström* (MIKES, Finland), J. V. Klüss

[OA1-06] Conducting Particle in Vacuum Interrupter: Field Computation and Dynamic Shuo Xu* (The University of Tokyo, Japan), Kunihiko Hidaka, Akiko Kumada, Hisatoshi Ikeda

SESSION OA2: Electro-magnetic Field 2

[OA2-01] Measurement of Magnetic Properties of Electrical Steels at High Flux Densities Using an Improved Single Sheet Tester

Z.D. Wang* (The University of Manchester, UK), Q. Tang, P. Anderson, A. Moses, P. Jarman

[OA2-02] An Electro-optic Integrated Sensor for Intensive E-field Measurement with Improved Temperature Stability

Ben Niu* (Tsinghua University, China), Rong Zeng, Chanxiao Li, Bo Wang, Junjie Yu

[OA2-03] Resonance Effect on Noise due to Magnetostriction on Magnetic Circuit

S. Chen* (ALSTOM GRID, France), B. Daoudi, S. Louise, G. Luna, F. Devaux

[OA2-04] Prediction of Temperature Distribution on UHV 3-phase Encapsulated Bus by 2D Magneto-thermal Analysis

H.S. Sohn* (Power & Industrial Systems R&D Center, Hyosung Corporation, Republic of Korea), N.K. Kim, J.J. Chae, C.H. Yeo, J.H. Kim

[OA2-05] Measurement of ELF Electric and Magnetic Field Strengths of 400 kV Transmission Lines and 400 kV Sub-stations

K A Aravind* (Central Power Research Institute, India), B. Krishna, D. Devendranath, S.K. Agarwal, B.N. De Bhowmick, S.B.R. Rao, B.N.V.R.C. Suresh Kumar

[OA2-06] Influence by Parasitic Capacitances on Frequency Response of a 380-150-50 kV Transformer with Shunt Reactor

L. Wu* (Eindhoven University of Technology, Netherlands), H. Fonk, P.A.A.F. Wouters, E.F. Steennis

SESSION PA: Electromagnetic Fields: Computation, Measurements, Environmental Effects

Tuesday 27 August 2013, 08:30-12:00 HIT Lobby (6F)

[PA-01] Calculation of Power Frequency Fields from High Voltage Overhead Lines in Residential Areas

I. N. Ztoupis* (High Voltage Lab, Greece), I. F. Gonos, I. A. Stathopulos

[PA-02] Test and Simulation Study on Hysteresis Loop for Transformer Core under DC Bias

Xiaoping Li* (Wuhan University, China), Hailiang Lu, S.A.K.S Jafri, Xishan Wen

[PA-04] Live Work under HVDC Voltage: An Investigation into Altitude Effects of Flashover Voltage for Rod-plane Air Gaps

N. Parus* (University of the Witwatersrand, South Africa), I.R. Jandrell, N. Mahatho, T. Govender, H. A. Roets

TOPIC A

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[PA-05] Applying Differential Evolution Algorithm Combined with Finite Element Method to Optimize Grading Rings for 750kV Surge Arrester

Zhipeng Jiang* (School of Electrical Engineering,Wuhan University, China), Xishan Wen, Lei Lan, Huazhu Du

[PA-06] Design and Construction of a 1 kV Portable Impulse Voltage Generator

S.Nedphokaew* (Rajamangala University of Technology Phra Nakhon (RMUTP), Thailand), V. Phupha, T. Tanmaneeprasert

[PA-07] Simulation Analysis of Error of Transmission Tower Grounding Resistance Measurement Using Clamp Meter

Wei Li* (Wuhan University, China), Chang-sheng Zhu, Zhi-qiang He, Xi-shan Wen, Lei Lan, Hai-liang Lu

[PA-08] Analysis of Arc Process in Low Voltage Circuit Breaker

T. H. Song* (Hyundai Heavy Industries Co., Ltd, Republic of Korea), J. S. Kang, B. S. Baek, J. S. Hur, D. J. Kim, K. C. Ko

[PA-09] Magnetic Hysteresis Model Based on Sum of Harmonics in the Magnetic Field

C. Freitag* (Karlsruhe Institute of Technology, Germany), T. Bender, T. Leibfried

[PA-10] Characteristics of Electric Fields Induced inside a Worker Exposed to Multiple Frequency Magnetic Fields of Neutral Ground Reactor

Suk Won Min* (Soonchunhyang University, Republic of Korea)

[PA-11] A Comparison of Measures to Reduce the Intensity of Magnetic Field outside High Voltage Power Substations

L. Korpinen* (Tampere University of Technology, Finland), O. Okun, S. Shevchenko

[PA-12] Examples of Spark Discharge under a 400 kV Power Line

L. Korpinen* (Tampere University of Technology, Finland), R. Pääkkönen, H. Tarao, H. Kuisti

[PA-13] Occupational Exposure to Electric and Magnetic Fields whilst Working around Power Transformers at 110 kV Substations in Tampere, Finland

L. Korpinen* (Tampere University of Technology, Finland), R. Pääkkönen, F.Gobba

[PA-14] Transient Field Distribution on Epoxy Resin Insulators in Air under DC Voltages

A. Winter* (Technische Universität München, Germany), J. Kindersberger

[PA-15] Simulation Research on Interturn Short Circuit in Rotor Winding Based on FRA

Hao Liu* (Xi'an Jiaotong University, China), Xiaobo Ou, Shengchang Ji

[PA-16] Internal Field Optimization of a Vacuum Interrupter Chamber in Order to Reduce Insulation Stress Using NN, GA and FE Approach

A. Akbari* (K. N. Toosi K. N. Toosi University of Technology, Iran), A. Shemshadi, S.M.T Bathaee

[PA-17] Study on Electromagnetic Environmental Effects of HVDC Overhead Transmission Line

Kyeho Jon* (LS Cable and System Ltd., Republic of Korea), Daejeong Kim, Mikyoung Ahn, Jungnyun Kim, Bo Zhang

[PA-18] Measurement of the Electric Field Distribution on the Ground Surface in a Rod-plane Configuration: Voltage Effect

D. Khelil* (University of Science and Technology Houari Boumediene, Algeria), S. Bouazabia, N. Harid, A. Haddad

[PA-19] Effect of Electric and Magnetic Fields of Transmission Lines on Metallic Gas Pipe Lines Osama E. Gouda* (Cairo University, Egypt), Adel Z. El Dein

[PA-20] Optimization of Corona Control Rings for EHV/UHV Suspension Porcelain Insulator Strings

Pradeep M. Nirgude* (Central Power Research Institute, India), V. Sravanthi, D. Devendranath

[PA-21] Parameters Estimation of Horizontal Multi-layer Soils by Particle Swarm Optimization

Lu Zhang* (Wuhan University, China), Zhuohong Pan, Xishan Wen

[PA-22] Arc Cross-section Determination of Convection Stabilized Arcs

M. Kang* (ETH Zurich, Switzerland), M. M. Walter, C. M. Franck

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[PA-24] Water Droplet Oscillation on the Hydrophobic Surface of Polymeric Insulators under AC Electric Field Stress

M.H. Nazemi* (Technische Universität Darmstadt, Germany), H. Songoro, E. Gjonaj, V. Hinrichsen, T. Weiland

[PA-25] Effects of Different Screw Threads of Screw Electrode Ozonizer on Ozone Generation Properties

T. Fujishima* (Nagasaki University, Japan), T. Kawaguchi, T. Amano, T. Yamashita

[PA-26] Methodology for the Numeric Simulation of a Hybrid AC/DC Field Stress on Overhead Line Insulators

J. Knauel* (RWTH Aachen University, Germany), A. Wagner

[PA-27] Numerical Estimations of Induced and Contact Currents in Human Body in Contact with a Car in 60 Hz Electric Fields

Hiroo Tarao* (Kagawa National College of Technology, Japan), Noriyuki Hayashi, Leena Korpinen, Takashi Matsumoto, Katsuo Isaka

[PA-28] A New Approach to Evaluate the Soil Temperature of High Voltage Cables

J. Plesch* (Graz University of Technology, Austria), S. Pack

[PA-29] Investigating Effective Design Parameters of Lead Exit in Power Transformers for Electric Field Optimization Using Finite Element Method

Asghar Akbari* (K. N. Toosi K. N. Toosi University of Technology, Iran), Masoud Rouhollahi

[PA-30] The Prediction of AC Breakdown Voltage Using Fuzzy Inference System

A. Font * (Istanbul Technical University (I.T.U), Turkey), K. Arikan, O. Kalenderli, A. Kara, E. Onal

[PA-31] Evaluation on Application of DC Bias Restraining Equipment Zhuohong Pan* (Wuhan University, China), Lu Zhang, Xishan Wen

[PA-32] Study of Protrusion Detachment on Vacuum Interrupter Contact Surface

Shuo Xu* (The University of Tokyo, Japan), Kunihiko Hidaka, Eiji Kaneko, Akiko Kumada, Hisatoshi Ikeda

[PA-33] Analysis of LNA(Low Noise Amplifier) Susceptibility Affected by HPM Threat

Jeong-Ju Bang* (Inha University, Republic of Korea), Sun-Ho Choi, Chang-Su Huh, U-choel Park

[PA-34] Magnetic Field Distribution under EHV and HV Double-circuit Power Lines which Cross Paths T. Matsumoto* (Anan National College of Technology, Japan), H. Hirata, H. Tarao, N. Hayashi, K. Isaka

[PA-35] Simulation on Positive Streamers in Insulating Oil under Nanosecond Pulse Voltage Initiated from a Needle-plate Electrode

Guan Jun Zhang * (Xi'an Jiaotong University, China), Yuan Li , Hai Bao Mu, Jun Bo Deng, Shu Hong Wang

[PA-36] Simple Marx Generator for UWB HPEM EMC Testing

Sughun Chang* (Korea Electrotechnology Research Institute (KERI), Republic of Korea), Jaebok Lee, Sergey Shenderey, E.L Svechnikov

[PA-37] Predict of Temperature-Rise of LV Housing in the Gas Insulated Switchgear Using Electro Magnetic-Thermal coupled Analysis

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SESSION OB1: Transient Voltages 1

[OB1-01] Research on Laser-triggering Methods for a High Voltage Spark Hap in High-voltage Series Capacitor Protection

Weimin Sun* (Tsinghua University, China), Rong Zeng, Xinfu Sheng, Chijie Zhuang

[OB1-02] Design of Corona Rings for 380 kV Nonceramic V-insulator String S. Ilhan* (Istanbul Technical University (I.T.U), Turkey), A. Ozdemir, H. Ismailoglu

[OB1-03] Lightning Overvoltage of Overhead Power Collection Transmission Line in Wind Power Plant Xianqiang Li* (Wuhan University, China), Jian Xue, Jianguo Wang, Mi Zhou, Li Cai, Yu Wang

[OB1-04] Large-scale Tests of Practical Grounding Electrodes

D. Clark* (Cardiff University, UK), D. Guo, D. Lathi, H. Griffiths, N. Harid, A. Haddad, A. Ainsley

[OB1-05] Numerical Simulation Method for the Lightning Response of a Grounding System Buried in Multilayered Earth Based on the Quasi-Static Complex Image Method

Zhong-Xin Li* (China Electrical Power Research Institute, China)

[OB1-06] Phase Space Reconstruction and Nonlinear Characteristics Quantities Extraction of Ferroresonance Overvoltage Time Series

Qing Yang* (Chongqing University, China), Wenxia Sima, Ming Yang, Tao Yuan, Lijun Chen, Sha Ouyang

[OB2-01] Altitude Corrections for Switching Impulse Flashover Voltage of Rod-Plane Air Gaps

Ding Yujian* (High Voltage Research Institute, China), Liao Weiming, Fan Jianbin, Li Qingfeng, Zhou Jun, Shu Zhiyi

[OB2-02] Analysis of Stress and Strength Coordination of Power Circuit Breakers in Thailand’s Transmission Network

Thanapong Suwanasri* (King Mongkut's University of Technology North Bangkok, Thailand), Sumate Lipirodjanapong, Cattareeya Suwanasri

[OB2-03] The Observation and 3D Modelling of Long Positive Streamers in Air

She Chen* (Tsinghua University, China), Rong Zeng, Chijie Zhuang, Xuan Zhou

[OB2-04] Protection of Distribution Transformer against Arising or Transferred Fast-front Overvoltages: Effects of Surge Arrester Connection Conductors Length

Z.D. Datsios* (Aristotle University of Thessaloniki, Greece), P.N. Mikropoulos, Z. Politis, A.G. Kagiannas, T.E. Tsovilis

[OB2-05] Comparison of Simulating Experiment on Switching Surges in Cable Collection Grid of Wind Power Plant with Transient Analysis

X.Z. Liu* (Xi'an Jiaotong University, China), X.Z. Wang, Y.S. Li, A. Saboor, T.L. Zhang, Y.C. Shang, J. S. Cao

[OB2-06] Evaluation of Lightning Incidence to ESE Rods

T.E. Tsovilis* (Aristotle University of Thessaloniki, Greece), P.N. Mikropoulos

Tuesday 27 August 2013, 08:30-10:00 HIT 606

[OB3-01] Varistor Coupling for Combination Wave Test Waveforms of Surge Protective Devices

Mi Zhou* (School of Electrical Engineering, Wuhan University, China), Fang Liu, Qiyou Duan, Jianguo Wang

TOPIC B

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[OB3-02] Application and Potential of Integrated Surge Arresters in Gas Insulated Transmission Lines (GIL) for Lightning Overvoltages

F. Goll* (Technische Universität München, Germany), R. Witzmann, C. Neumann, D. Imamovic

[OB3-03] Application Philosophy and History of High Field MO-resistors to Surge Arresters

S. Ishibe* (Kyushu Institute of Technology, Japan)

[OB3-04] Development of a Mathematical Model to ZnO Surge Arrester

P.B. Vilar* (Federal University of Campina Grande, Brazil), E.G. Costa, G.R.S. Lira, M.J.A. Maia

[OB3-05] Behavior of Metal Oxide Surge Arrester for Fast Surges

E.G. Costa* (Federal University of Campina Grande, Brazil), V.B. Alba, S.L.G.R. Lira, B.J.A. Martinez

[OB3-06] Evaluation of the Moisture Ingress and the Electrical Performance on Polymeric Surge Arresters of Distribution Networks

D.A. da Silva* (UNICAMP, Brazil), E.C.M. Costa, J. Pissolato, R.C. de Jesus, J.L. de Franco, S.R. de Abreu, M.A.A. Romano, K. Lahti

SESSION PB: Transient Voltages: Lightning, Switching, Repetitive Impulses, Surge Arrester, Insulation Coordination, Overvoltage Protection

[PB-01] Transformer Limited Fault Transient Recovery Voltage for EHV and UHV Circuit Breakers

D. Dufournet* (ALSTOM GRID, France), A.Janssen, J.Hu

[PB-02] Line Surge Arrester Protection Design for an 380 kV Power Transmission Line A. Ozdemir* (Istanbul Technical University (I.T.U), Turkey), C. Ozturk, S. Ilhan

[PB-03] Simulation of Current Distribution of Transmission Line Tower at Lightning Stroke Hailiang Lu* (Wuhan University, China), Changcheng Zhu, Wei Li, Xishan Wen, Zhiqiang He

[PB-04] Numerical Modelling of the Inception of Large Scale Discharges

A. Villa* (Ricerca Sistema Energetico (RSE), Italy), L. Barbieri, R. Malgesini

[PB-05] Comparison of Overvoltage Propagation in Transformers

M. Florkowski* (ABB Corporate Research, Poland), J. Furgał, P. Kłys, M. Kuniewski

[PB-06] Design and Construction of a 1 kV Portable Ring Wave Generator

T. Tunmaneeprasert* (Faculty of Engineering,Rajamangala University of Technology Phra Nakhon (RMUTP), Thailand), P.Wannakarn, S.Nedphokaew

[PB-07] Comparison of Lightning Shielding Failure Simulation Methods for UHV Transmission Lines Qian Li* (Tsinghua University, China), Rong Zeng, Chijie Zhuang, Zhanqing Yu, Zhizhao Li, Jinliang He

[PB-08] The Evaluation of Interruption Performance of Gas Circuit Breakers by Using the Modified-mayr Arc Model Y S Cho* (Korea Electrotechnology Research Institute (KERI), Republic of Korea), H K Kim, J K Chong, Y H Oh, W Y Lee, K D Song

[PB-09] Experimental Study on Vacuum Circuit Breaker with Back-to-back Switching Capability

Byoung-Chul Kim* (LS Industrial System Electro-technology R&D Center, Republic of Korea), Sung-Tae Kim, Kil-Young Ahn, Jong-Ho Lee

[PB-10] New Approach to Lightning Surge Analysis on Overhead Lines

R. Haller* (University of West Bohemia Pilsen, Czech Republic), Z. Benesova, V. Kotlan

[PB-11] CFD Analysis of Interruption Performance of High-voltage Gas Circuit Breakers

Kim H.K.* (Korea Electrotechnology Research Institute(KERI), Republic of Korea), Cho Y.S., Song K.D.

[PB-12] Investigation on Circuit Modelling of Ferrite Rings for VFT Suppressing Based on Multi-coil Coupling

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[PB-13] Observation of Flashover Path on Porcelain Cap and Pin Type Insulator under Different Lightning Impulse Voltage Polarities

H. G. P. Hunt* (University of the Witwatersrand, South Africa), N. J. West, K. J. Nixon, I. R. Jandrell

[PB-14] Analysis of the Step-up Transformer Energization Inrush Currents at the Krsko Nuclear Power Plant

M. Becan* (Elektroinstitut Milan Vidmar, Slovenia), R. Leskovec, B. Zitnik, R. Seme, A. Pozne

[PB-15] Detailed Analysis of the North-western Slovenian Blackout

S. Podkoritnik* (Elektroinstitut Milan Vidmar, Slovenia), M. Iglic, M. Maksić, D. Matvoz, J. Kostevc, G. Stern

[PB-16] Experimental Application of the Similarity Theory on Scaled Strip Electrode Configurations for the Calculation of the Grounding Impedance

E. P. Nicolopoulou* (National Technical University of Athens, Greece), V.T. Kontargyri, I. F. Gonos, G. J. Tsekouras, E. C. Pyrgioti, I. A. Stathopulos

[PB-17] Type Test and Pre-qualification Test of EHV Cable System for 400 kV / 2500 mm2

Sunghoon Cho* (ILJIN Electric, Republic of Korea), Youngbum Kim, Myunghun Jun, Yongwook Lee, Jinwoo Kim

[PB-18] Overvoltage Analysis of Single-phase Short-circuit in Buji 220kV Substation

Chen Gong* (Wuhan University, China), Zeng Weiwen

[PB-19] Overvoltage of Shunt Reactor Caused by Pre-breakdown Phenomenon of SF6 Breaker Yunzhu An* (Wuhan University, China), Xishan Wen, Huazhu Du, Hongtao Fan, Yu Wang, Hongbo Ma

[PB-21] Research on Impulse Characteristics of Isolated Grounding System in Large Grounding Grid Zongxi Liu* (Wuhan University, China), Xishan Wen, Lei Lan, Zhuohong Pan

[PB-22] Degradation of Oil Impregnated Paper Film Insulation under Influence of Repetitive Fast High Voltage Impulses

K. Niayesh* (University of Tehran, Iran), M. Mohammadi, M. Farahani, E. Gockenbach

[PB-23] Remote System for Measurement and Analysis of Transient Voltages - Smarte

H.J.A.Martins* (CEPEL - Electric Energy Research Center, Brazil), C.M.Vasques, C.F.Carraro, I.F.Nova, W.C.Filho, M. Michalski

[PB-24] Interaction between Electric Power System and Autotransformers by Analyzing Transient Voltages Measured Using Bushing Capacitive Taps

H.J.A.Martins* (CEPEL - Electric Energy Research Center, Brazil), C.M.Vasques, C.F.Carraro, I.F.Nova, L.E.Santos, W.C.Filho, M. Michalski

[PB-25] The Choice of the Lowest Distance between Shielding Wire and Phase Conductor of Overhead Transmission Line

A. S. Gayvoronsky* (Research and Development Center at Federal Grid Company of Unified Energy System, Russian Federation), O. V. Bogdanov

[PB-26] Application of Improved Single Surge Impedance Tower Model for the Research on the Transmission Lines with Quadruple-circuit on Single Tower

Mingjie Xiao* (Wuhan University, China), Wenwu Huang, Xishan Wen, Hailiang Lu

[PB-27] Design and Installer Solar Energy Systems Sun Tracking for Comparison

S.Nedphokaew* (Rajamangala University of Technology Phra Nakhon (RMUTP), Thailand)

[PB-28] The First Application of Line Arrester to Upgrade Lightning Performance of UHV Transmission Line in Korea

Joosik Kwak* (KEPCO, Republic of Korea), Jung-Wook Woo, Sang-soo Kim, Jung-Won Lee

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SESSION OC1: Testing Techniques 1

Thursday 29 August 2013, 10:30-12:00 HIT 608

[OC1-01] Assessment of the Pollution Performance of Composite Insulators

G. Pirovano*(RSE, Italy), P. Omodeo Gianolo, A. Pigini

[OC1-02] Measurements and Simulation of Magnetic Cores on the Basis of Low Frequency Data M. Freiburg* (TU Dortmund, Germany), R. Schmerling, F. Jenau

[OC1-03] Impulse Testing of Hybrid Gas-solid Polymer Insulation Systems

Y. V. Serdyuk* (Chalmers University of Technology, Sweden), S. Kumara, Y. Zheng, S. M. Gubanski, R. Summer, M. Ramesh, R. Haller, P. Martinek

[OC1-04] Coupled Simulation of Flow and Dynamic Analysis for Prediction of the Performance and Stroke in GIS

Youngsu Lee * (LS Industrial System, Republic of Korea), Boohyung Bang, Heesub Ahn, Jongung Choi, Seokwon Park

[OC1-05] New Artificial Pollution Tests for Silicone Rubber Insulators

M. Albano* (Cardiff University, UK), P. Charalampidis, H. Griffiths, M. A. Haddad, R. T. Waters

[OC1-06] Research and Development of High-voltage Solid-state Switch for 35kV OWTS

Jun Jiang* (North China Electric Power University, China), Sheng-chuan Zhao, Guo-ming Ma, Xiang Shi, Ding-ping Luo, Cheng-rong Li, Wen-zhi Chang, Yi-long Chen, Xiao Cui, Zhi-ge Li, Jian Qu, Zhi-guo Tang

SESSION OC2: Testing Techniques 2

[OC2-01] Some Remarks Concerning Testing of Ultra High Voltage Equipment

Ernst Gockenbach* (Leibniz Universität Hannover, Germany)

[OC2-02] Insulation Characteristics with Respect to the Front Time Extension in Lightning Impulse Voltage Test for UHV Equipment

T. Ishikura* (Mitsubishi Electric Corporation, Japan), E. Hino, T. Tsuboi, G. Ueta, S. Okabe

[OC2-03] Analysis and Comparison of Atmospheric and Altitude Correction Methods for Air Gaps and Clean Insulators

Johannes Rickmann* (Phenix Technologies, USA), Jianbin Fan, Qingfeng Li, Yongli Liao, Alberto Pigini, Hamid Sharifnia, Dragan Tabakovic, Dong Wu, Ding Yujian

[OC2-04] Study on Overvoltage Measurement by Two Leakage Current Sensors for Capacitive Equipment Lin Du* (Chongqing University, China), Shuncheng Liu, Youyuan Wang

[OC2-05] Uncertainty of Time-parameter Measurement of High Voltage Full Lightning Impulse by National-standard Class Measuring System

Satoru Miyazaki* (Central Research Institute of Electric Power Industry, Japan), Hisashi Goshima, Takaaki Amano, Hiroyuki Shinkai, Masafumi Yashima, Takayuki Wakimoto, Masaru Ishii

[OC2-06] Designing Precise Current Comparators and Their Application to Electrical Metrology H. Cayci* (TUBITAK UME, Turkey)

SESSION PC: High Voltage and High Current Testing Techniques

[PC-01] Coherence Function and FFT Analysis of Theoretically Simulated Partial Discharge Current in a Transformer during Impulse Test

M. Suryakalavathi* (JNTUH, India), K.Shashidhar Reddy, B.N.Shashank, Vishal Vijay Kulkarni, B.P.Singh

TOPIC C

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[PC-02] Humidity Corrections and Front Time Tolerance for Lightning Impulse Voltages in Metric Air Gap

R. R. Diaz* (National University of Tucuman, Argentina), A. A. Segovia

[PC-03] Test Setup for the Qualification-testing of Surge Arresters Used in AC and DC Power Systems

A. Claudi* (University of Kassel, Germany), G. Finis, F. Schäfer, R. Durth, A. Austermuehl

[PC-04] Consideration in GB Standards for UHVAC and UHVDC Equipment Testing

Dong Cui* (Xi’an High Voltage Apparatus Research Institute, China), Jiansheng Wang, Enwen Tian

[PC-05] Calculation and Analysis of Overvoltage on the Neutral Point of 110kV Power Transformers

Li Bo-jiang* (Wuhan University, China), Wen Xi-shan , Lan Lei , Li Xiao-ping , Lu Hai-liang

[PC-06] Test Setup and Results Concerning the Mechanical Strength of Continuously Transposed Conductors for Power Transformers

D. Geißler* (Karlsruhe Institute of Technology (KIT), Germany), T. Leibfried

[PC-07] Development and Application of a Climate Chamber for Testing Large Dimensioned High Voltage Components up to 100 kV

R. Schmerling* (TU Dortmund, Germany), M. Freiburg, F. Jenau, T. Weissgerber, F. Pohlmann

[PC-08] A Simulative Study on Thermal Effect of Static Electrical Arc on Surface Heat Dissipation for Different Electrode Configurations Using ANN

A. Font* (İstanbul Tehcnical University, Turkey), O. Kalenderli

[PC-09] A Study about Making Current Tests with Ignition Fuse Wire for Earthing Switch on UHV Class

Jaechan Lim* (Korea Electro-technology Research Institute, Republic of Korea), Ikesun Choi, Junghyeon Ryu, Seungjae Park, Kernjoong Kim

[PC-10] Step Response and Comparison Test of Impulse Current Measuring System

Takayuki Wakimoto* (Chiba Institute of Technology, Japan), Masaru Ishii

[PC-11] Study on Application of Fault Current Limiter for OCR Coordination in Underground Grid

H.Y. Park* (LS Industrial Systems Co., Ltd., Republic of Korea), K.W. Park, M.J. Kim, J.W. Sim, W.J. Choe, S. W. Lee, G.Y. Jeon, S.B. Kim

[PC-12] Denoising White Noise in Partial Discharge Based on the Wavelet Entropy of Lifting Wavelet Decomposition

J.Z. Wu* (South China University of Technology, China), H.Q.Niu

[PC-13] Characterization of Ultra-high-voltage Power Semiconductor Devices

I.H. Kang* (Korea Electrotechnology Research Institute (KERI), Republic of Korea), S. B. Yun, S. C. Kim, N. K. Kim

[PC-14] Test Study on Flashover Characteristics of Long Air Gap with Negative Polarity Switching Impulse

Yu Wang* (Wuhan University, China), Xishan Wen, Mingyue Yu, Lei Lan, Yunzhu An, Hailiang Lu

[PC-15] Characteristics of Creepage Discharge under Impulse Voltage Application in Oil/Pressboard Composite Insulation System

Shigeyoshi Yoshida* (Kyushu Institute of Technology, Japan), Norio Morita, Masahiro Kozako, Masayuki Hikita, Takahiro Umemoto, Soichiro Kainaga, Hirotaka Muto, Takao Tsurimoto

[PC-16] A Study on the Subsequent Impulse Current Generator with the Waveshape of 0.25/100 µs Tae-Hyung Lee* (KESRI, Republic of Korea), Sung-Chul Cho, Dong-Kyu Kim, Ju-Hong Eom

[PC-17] Calibration Techniques of AC High Voltage and Heavy Current by Employing National Measurement Standards

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SESSION OD1: PD in Solid Insulation

[OD1-01] Relationship between Electric Field Strength and Characteristic Frequency in Partial Discharge Tatsuya Mutakamihigashi* (Kanden Engineering Corporation, Japan), Reisho Sakurai, Sho Okada, Hideki Ueno

[OD1-02] Investigation on Electric Field Stress and Partial Discharge Measurement of Power Cable Termination Defects

P. Fuangpian* (King Mongkut’s University of Technology North Bangkok, Thailand), T. Suwanasri, C. Suwanasri, A. Rajakrom, S. Rattananupong, S. Ruankon, T. Thanasettagone

[OD1-03] Fibre-optic Acoustic Detection of Damage Processes in Elastomeric Insulation under AC and DC Stress

P. Rohwetter* (BAM Federal Institute for Materials Research and Testing, Germany), W.R. Habel, G. Heidmann, D. Pepper

[OD1-04] PD Measurement and Diagnosis of GIS in High Voltage Cable Grids

Rene Hummel* (OMICRON electronics, Austria), Kay Rethmeier, Stefan Hoek, Alexander Kraetge, Ole Kessler, Inho Hong

[OD1-05] Simulation of Partial Discharge in Cavities Embedded in Solid Dielectrics by Finite Element Method

V. Sarfi* (Moghan Wire and Cable, Iran), V. Hemmati

[OD1-06] Return of Experience from Continuous PD Monitoring of Rotating Machines

L.V. Badicu* (Omicron Energy Solutions, Germany), W. Koltunowicz, M. Koch, A. Piccolo

SESSION OD2: Space Charges

[OD2-01] Space Charge and Its Impact on DC Breakdown of Polymeric Materials

G. Chen* (University of Southampton, UK)

[OD2-02] The Research on Space Charge Property in the Sample with Two Layers of Oil-immersed-paper and Oil

Kai Wu* (State Key Laboratory of Electrical Insulation and Power Equipment, China), Hao-sen Wang, Qing-dong Zhu, Yong-hong Cheng, Sheng-tao Li

[OD2-03] Charge Accumulation Phenomena of GIS Downsized Spacer under DC Field: High-resolution Measurement and Analysis with Circuit Model

H. Iwabuchi* (The University of Tokyo, Japan), S. Matsuoka, A. Kumada, K. Hidaka, Y. Hoshina, T. Yasuoka, M. Takei

[OD2-04] Charging and Deformation of Water Droplets on Composite Insulating Surface Stressed by DC Electric High Voltage

J. Ndoumbe* (Ecole Centrale de Lyon, University of Lyon, France), A. Beroual, A. Moukengue Imano

[OD2-05] Space Charge Characteristics of Epoxy/SiO2 Nanocomposites with Plasma-functionalized Nanoparticles

B.T. Phung* (University of New South Wales, Australia), Chao Wu, Wei Yan

[OD2-06] Influence of Space Charge on the Breakdown Characteristics of Oil-paper Insulation

Yuanwei Zhu* (Xi’an Jiaotong University, China), Shengtao Li, Daomin Min, Liang He, Wencheng Wu, Yang Yang

SESSION OD3: Gas Insulation and PD

[OD3-01] Optical Detection and Measurement of Partial Discharges at a Metal/SF6/Epoxy Triple Junction O. Lesaint (CNRS and grenoble University, France), L. Caliap, N. Bonifaci, A. Girodet

TOPIC D

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[OD3-02] Methods to Reduce the Electron Emission at the Triple Junctions in High Voltage Vacuum Interrupters

K.R. Venna* (Brandenburg Technological University-Cottbus, Germany), H. H. Schramm, S. Giere

[OD3-03] Sensitivity of a Loop-shaped UHF Sensor in a Three-phase 550 kV GIS for Detecting Partial Discharges

T. Hoshino* (Toshiba Corporation, Japan), H. Shirai, H. Kurosaki, M. Ito, M. Takei, T. Saida

[OD3-04] Study on SF6 Decomposition Byproducts under Typical Insulation Defects in CT

J.Y. Li* (Xi'an Jiaotong University, China), Y.Y. Wang, S.C. Ji

[OD3-05] Relationship between PD Current Pulse Waveforms and the Emitted Electromagnetic Waves in SF6 Alternative Gases with the SHF_PDPW System

Takuya Matsumoto* (Kyushu Institute of Technology, Japan), Minoru Fukuzaki, Shinya Ohtsuka

[OD3-06] Electric Field Lift-off and Motion of Particles in Gaseous Insulation

P. Simka (ABB Switzerland Ltd., Switzerland), M. Seeger

SESSION OD4: Insulation in Motor and Others

[OD4-01] Partial Discharge Measurements under Repetitive Impulse Voltage for “End of Line Tests” of Electric Traction Motors

A. Berbic* (University of Kassel, Germany), A. Claudi

[OD4-02] Effect of Dielectric Material on Decay of Surface Charge Deposited by Corona Discharge

X. Wang* (School of Electrical Engineering, Royal Institute of Technology, Sweden), R. Clemence Kiiza, M. Ghaffarian Niasar, R. Nikjoo, N. Taylor, H. Edin

[OD4-03] Application of Isothermal Relaxation Current Method in the Generator Stator Bar Insulation Evaluation during Electric Aging Process

Yu Cao* (Shanghai Jiao Tong University, China), Qian Zhang, Jiandong Wu, Yi Yin

[OD4-04] Partial Discharges in a Stator under Synthezised Voltage Waveforms

T.J. Hammarstroem* (Chalmers University of Technology, Sweden), T. Bengtsson, J. Blennow, S. M. Gubanski

[OD4-05] Dielectric Condition Assessment of IGBT Based Power Converter Module: An Experimental Approach

Saravanakumar Arumugam* (University Rostock, Germany), Sergey Gorchakov, Thomas Schoenemann

[OD4-06] An Optimized Solution for Electrical Partial Discharge Measurement on Large Power Capacitors

Raja Kuppuswamy* (Haefely Test AG, Switzerland)

SESSION OD5: Liquid Insulation and PD

Wednesday 28 August 2013, 08:30-10:00 HIT 608

[OD5-01] Partial Discharge Localization in Power Transformers

Su Su Win* (Yangon Technological University, Myanmar), Sebastian Coenen, Stefan Tenbohlen

[OD5-02] Study on Partial Discharge and Generated Gasses of Natural Ester Oils Having Different Molecular Structures

Motoo Tsuchie* (Kyushu Institute of Technology, Japan), Masayuki Hikita, Takashi Suzuki, Akinori Kanetani, Takaaki Kano

[OD5-03] Effect of Mineral Oil Conditions on Partial Discharge Inception Voltage Characteristics

N. Pattanadech* (Institute of High Voltage Engineering and System Management, Austria), F. Pratomosiwi, A. A. Kemma, T.F. Sipahutar, B. Wieser, Suwarno, M. Muhr

[OD5-04] Investigations of In-oil Methods for PD Detection and Vibration Measurement

M. Beltle* (University of Stuttgart, Germany), M. Siegel, S. Tenbohlen

[OD5-05] Combining Acoustical and Different Electrical Methods for Localizing Partial Discharge in a Power Transformer

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[OD5-06] Correlation between Electrical Measured Partial Discharges and Acoustic Emission Signals from New and Thermal Aged Pressboards in Oil

Seyed Amir Mahmood Najafi* (Leibniz Universität of Hannover, Germany), Abdolrahman Peimankar, Ernst Gockenbach, Hossein Borsi

SESSION OD6: Liquid Insulation Characteristics

[OD6-01] Partial Discharge Inception Voltage Characteristics of Mineral Oil of Different Electrode Arrangements

N. Pattanadech* (Institute of High Voltage Engineering and System Management, Austria), F. Pratomosiwi, T.F. Sipahutar, A.A.Kemma, B. Wieser,Suwarno, M. Muhr

[OD6-02] Surface Discharge Characteristics of Oil-paper Interface under Combined AC-DC Voltage

Jin Fubao* (Tsinghua University, China), Zhou Yuanxiang, Sha Yanchao, Sun Qinghua, Huang Meng

[OD6-03] Investigation of the Static Electrification Phenomenon in Power Transformers with the Streaming Model Test Setup

J. A. Podesser* (Graz University of Technology, Austria), R. Schwarz, G. Pukel, B. Wieser, M. Muhr

[OD6-04] Design of Electromagnetic Partial Discharge Sensors for Power Transformers

K. Gulnihar* (TUBITAK UME, Turkey), H. Cayci, M. Ugur

[OD6-05] Effects of DBDS on Performance of Paper Oil Insulation of Transformers

J. Sundara Rajan* (Central Power Research Institute, India), Akshatha A

[OD6-06] Ion Concentration Triggered Breakdown of Oil- paper- insulation at High DC Voltage and Evaluation by FEM

K. Backhaus* (Technische Universität Dresden, Germany), J. Speck, S. Großmann, R. Fritsche

SESSION OD7: Dielectric Properties in Liquid

[OD7-01] Simulation of Dielectric Frequency Response of Transformer Insulation System

Yu Guo* (University of Southampton, UK), George Chen

[OD7-02] Calibration of Loss Measurement Systems for Large Power Transformers

T. Steiner* (HIGHVOLT Pruftechnik Dresden GmbH, Germany), C. Bonin

[OD7-03] Application of the Dielectric Response on Drying Process of Power Transformers

Martin Anglhuber* (OMICRON electronics, Austria), Stephanie Raetzke, Maik Koch

[OD7-04] Insulation Condition Diagnostics of Oil Impregnated Paper by Utilizing Power System Transients

R. Nikjoo* (KTH Royal Institute of Technology, Sweden), N. Taylor, R. Clemence Kiiza, M. Ghaffarian, X. Wang, H. Edin

[OD7-05] Electrical Conductivity Measurement of Oil Impregnated Pressboard with Varied Electric Field Stress and Temperature

F. Pratomosiwi* (Graz University of Technology, Austria), N. Pattanadech, T.F. Sipahutar, G. Pukel, R. Schwarz, Suwarno, M. Muhr

[OD7-06] Dielectric Response Measurements in Frequency, Temperature and Time Domain M. Ohlen* (Megger Sweden, Sweden), P. Werelius, J. Cheng

SESSION PD: High Voltage Measuring Techniques: Dielectric Parameter, Space Charges, Partial Discharges

Thursday 29 August 2013, 08:30-12:00 HIT Lobby (6F)

[PD-01] Recent Experiences with Partial Discharges Measurements Using Variable Frequency Diagnosis on Power Cable Accessories

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[PD-02] Effects of One-carrier Pulsed Injection and a DC Applied Voltage in the Dielectrics Liquid during Conduction N. Meftali, S. Bouazabia, D. Khelil* (USTHB, LSEI, Algeria)

[PD-03] Characteristics of AE Signals Obtained from Frequency Accelerated Deterioration Test with EP Rubber

Masaki Sugiura* (University of Miyazaki, Japan), Takuma Miyake, Tatsuya Sakoda, Yoichi Tsutagawa, Hidefumi Kawagoe, Masahiko Iguchi, Tomoyuki Nakagawa

[PD-04] A Research on Space Charge and Conduction Current in Polymeric Insulators by PEA Method with Reduced Measurement Cycle and Improved Resolution

Changwon Lee* (Honam University, Republic of Korea), Minwoo Gwak, Seung Hwangbo, June-Ho Lee

[PD-05] A Study on Insulation Characteristics of XLPE Power Cable due to the Influence of Moisture Eun-chun Lee* (K-water, Republic of Korea), Jae-chul Kim

[PD-06] Comparison of Partial Discharge Patterns in XLPE Cables Based Classification Defects Using Experimental and Theoretical Investigations

Sobhy S. Dessouky* (Faculty of Engineering-Port Said University, Egypt), Adel A. El Faraskoury, Waleed M.Elzanati

[PD-07] Partial Discharge Measurement of Medium Voltage Cables for Nuclear Power Plant C. H. Ha* (KHNP Central Research Institute, Republic of Korea), D. H. Lee

[PD-08] Detection and Characterization of Partial Discharge Behaviour in a Three Phase Compact GIS Bus Duct by Acoustic Method

Mritunjay Kumar* (BHEL Corporate R&D, India), M. Mohana Rao, AK Adikesavulu

[PD-09] Detection of Partial Discharges in SF6 Circuit Breakers at Field

H. Tatizawa* (University of São Paulo, Brazil), W.R. Bacega, F. Bacega, A.F. Castro, M. Bottaro

[PD-10] A Method to Distinguish the Polarity of Partial Discharge Signals

Young-Woo Youn* (Korea Electrotechnology Research Institute (KERI), Republic of Korea), Don-Ha Hwang, Kook-Hee Cho, Jong-Ho Sun, Ki-Dong Song, Dong-Sik Kang

[PD-11] Measurement of Winding Currents during Impulse Testing of Power Transformers. Shunts vs. Inductive Sensors

A. Marinescu* (ICMET, Romania), I. Dumbravă

[PD-12] Observation of Partial Discharge Propagation Process in Insulation Silicone Gel

Y. Hayase* (Fuji Electric Co., Ltd., Japan), K. Yamashiro, T. Takano

[PD-13] Investigation on Internal Sensor of Partial Discharge in the Joint of High Voltage XLPE Cable

Zhen-dong Ge* (North China Electric Power University, China), Xiang Shi, Sheng-chuan Zhao, Guo-ming Ma, Wen-zhi Chang, Cheng-rong Li, Xue-wei Chen, Li-gang Zhang, Zhi-ge Li

[PD-14] The Influence of Moisture on Dielectric Relaxation of Oil Impregnated Nomex on the Base of Dielectric Spectroscopy Measurements

M. Zenker* (West Pomeranian University of Technology, Poland), J. Subocz, S. Banaszak

[PD-15] Partial Discharge Characteristics of a Cylindrical Void in Oil-immersed Insulation under the Oscillating Lightning Impulse Voltage

Jianfeng Liang* (Xi'an Jiaotong University, China), Liang zhang, Junhao Li, Yanming Li

[PD-16] Automatic Monitoring on Discharge of Air Gap Outdoor and the Application of Neural Network in Discharge Voltage Prediction

X.Luo* (South China University of Technoogy, China), H.Q.Niu, H.R.Lin

[PD-17] Partial Discharge Measurement of OCP-tapes in Rotating Electrical Machines

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[PD-18] Development A New Methodology to Measure Dielectric Strength of Elastomeric Materials

C. Lothongkam* (BAM - Federal Institute for Materials Research and Testing, Germany), W. R. Habel, G. Heidmann, E. Gockenbach

[PD-19] Study of Matching Circuit for Capacitor Voltage Divider

Gongchang Yue* (Tsinghua University, China), Weidong Liu

[PD-20] Identification of Typical Partial Discharge in SF6 Gas Based on Gabor Distribution Theory and Artificial Neural Network

Z. Ren* (Xi'an Jiaotong Unieversity, China), M. Dong, M. Ren, A.C. Qiu

[PD-21] Corona Performance of the 400 kV Bundle Conductors and Insulator Strings

M. Becan* (Elektroinstitut Milan Vidmar, Slovenia), M Babuder, B. Vertacnik, B. Volk, Z. Toros

[PD-22] A Novel Technique for On-line PD Localisation Based on PD Signal Propagation Characteristics in HV Power Cable

B. Sheng* (Glasgow Caledonian University, UK), C. Zhou, D. M. Hepburn, B. Alkali, W. Zhou, X. Dong

[PD-23] Insulation Degradation Characteristics of PPLP at the Cryogenic Temperature under DC Voltage Gijin Nam* (Daejin University, Republic of Korea), Donguk Kim, Jeongtae Kim

[PD-24] Study of Capacitive Coupler for High Voltage AC Measurement

K. L. Wong* (RMIT University, Australia), A. L. Lyngcoln

[PD-25] Modelling and Classifying Partial Discharge Waveforms

B. T. Phung* (University of New South Wales, Australia), R. Ambikairajah, J. Ravishankar

[PD-26] About Relation between Real and Apparent Charge of Partial Discharge

A. Ovsyannikov* (JSK Elektrosetservice, Russian Federation), R. Arbuzov, A. Kovalenko, A. Gaivoronsky

[PD-27] The Characteristics Analysis of High Frequency Current Transformer Used for Partial Discharge Detection

Wenlie Liang* (WinTech Co., Ltd, Taiwan), Shih-Chieh Yang, Jiann-Fuh Chen

[PD-28] Correlation between Electric and Acoustic Signals of Discharge Phenomenon at Different Electrical Stresses

Seyed Amir Mahmood Najafi* (Leibniz Universität of Hannover, Germany), Ernst Gockenbach, Hossein Borsi

[PD-29] Dielectric Heating in Insulating Materials at High DC and AC Voltages Superimposed by High Frequency High Voltages

Matthias Birle* (Ilmenau University of Technology, Germany), Carsten Leu

[PD-30] Current Waveform Estimation of PD in Straight 154 kV GIS Using Electromagnetic Wave Propagation Simulation

Kiichi Nishigouchi* (Kyushu Institute of Technology, Japan), Masahiro Kozako, Masayuki Hikita, Toshihiro Hoshino, Shiro Maruyama, Takashi Nakajima

[PD-31] Electrical Conduction Currents in Polymeric Insulating Materials under Mixed High Voltage Stress K. Eisenhuth* (Ilmenau University of Technology, Germany), C.Leu

[PD-32] Analysis on Voltage Distribution Rate for Circuit-breaker Equipped with Identical Units in Series during Breaking Test Duties

Jung-Hyeon Ryu* (KERI, Republic of Korea), Seung-Jae Park, Hyeong-Kee Rhyou, Jin-Hwan Kim, Kern-Joong Kim

[PD-33] Electromagnetic Wave Radiation Characteristics of Partial Discharge Depending on Needle Electrode Material and Shape in SF6 Gas

R. Mizuno* (Nagoya University, Japan), H.Kojima, N.Hayakawa, M.Hanai, M.Yoshida, H.Okubo

[PD-34] Three Dimensional SEEA Charge Analyses on an Insulator Surface In Vacuum

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[PD-37] Frequency Dependence of the Dissipation Factor of PE/XLPE-Insulated Medium Voltage Cables S. Hadid* (Chemnitz University of Technology, Germany), U. Schmidt, W. Schufft, S. Rätzke

[PD-38] Study on Condition for Space Charge Measurement in Full Size HVDC Cables

Kenta Mamiya* (Toyohashi University of Technology, Japan), Yoshinobu Murakami, Masayuki Nagao, Naohiro Hozumi, Tatsuki Okamoto

[PD-39] Partial Discharges in SF6 Gas Void Defect under Standard Aperiodic and Oscillating Switching Impulses

Ming Ren* (State Key Lab of Electrical Insulation & Power Equipment, China), Ming Dong, Aici Qiu,

[PD-40] Elimination of Sources of Interference while Measuring Dissipation Factor of Medium Voltage XLPE Cables

B. Nageshwar Rao* (Central Power Research Institute, India)

[PD-41] Time Sequential Properties of Partial Discharge Current Pulses in SF6 Gas and Dry Air under DC Voltage Application

M. Okamoto* (Kyushu Institute of Technology, Japan), S. Ohtsuka

[PD-42] Optimal Sensors for PD Measurements on Medium Voltage Switchgear

S. M. Hoek* (OMICRON electronics, Austria), A. Kraetge, Inho Hong, K. Rethmeier

[PD-43] Traceable Measurement of Dielectric Dissipation Factor at Very Low Frequency

A. Bergman* (SP Technical Research Institute of Sweden, Sweden), S. Bergman, C. Hoffmann, E. Paulus, A-P. Elg

[PD-44] Sophisticated Measurement of PD current Pulses in Insulation Oil and the Effects of Deaeration Treatment on the Waveforms with the SHF_PDPW System

Minoru Fukuzaki* (Kyushu Institute of Technology, Japan), Takuya Matsumoto, Shinya Ohtsuka

[PD-45] A Neural Network Model Enabling Higher Pattern Recognition Rate for PDS at Cryogenic Temperature

In-Jin Seo* (Hanyang University, Republic of Korea), Won Choi, Yong-Jo Lee, Ho-Jung Yoon, Ja-Yoon Koo

[PD-46] Investigation of Effect of Temperature Variation in a High Voltage Cable on Electrical Insulation C. F. Kumru* (Yildiz Technical University, Turkey), O. Arikan, C. Kocatepe, O. Kalenderli

[PD-47] Partial Discharge Measurement and Noise Removal on Power Cables

Suna Bolat* (Eastern Mediterranean University, Turkey), Ozkan Altay, Ozcan Kalenderli

[PD-48] Development and Application of Portable Partial Discharge Measurement Detector

Z. G. Xiao* (Xi'an Jiaotong University, China), M.Dong, M. Ren, J.G. Bi, Z. Ren

[PD-49] Design and Implementation of an Advanced Partial Discharge Analyzer

Cheng-Chien Kuo* (Saint John's University, Taiwan), Hong-Chan Chang, Feng-Chang Gu, Po-Han Chen

[PD-50] Comparison of Partial Discharge Forms in Insulation Systems at DC in Air at Higher Pressure M. Florkowski* (ABB Corporate Research, Poland), B.Florkowska, J.Roehrich, P.Zydroń

[PD-51] Surface Charging and Discharging Characteristics of Silicone Rubber Material under HVDC Non-uniform Electric Field in Atmosphere

Wen-Wei Shen* (Xi'an Jiaotong University, China), Cheng-Can Li, Hai-Bao Mu, Jun-Bo Deng, Yu-Gan Niu, Jun-Liang Wang, Li-Miao Zhang, Yi-Qun Zhang, Guan-Jun Zhang

[PD-52] Investigations on DC Breakdown Voltage of Solid Barrier under Non-uniform Electric Field

Phloymuk N.* (King Mongkut's University of Technology North Bangkok (KMUTNB), Thailand), Pruksanubal A., Tanthanuch N.

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SESSION OE1: Insulator 1

[OE1-01] Challenging Aspects in Design and Testing of UHV Bushing

Paul Howard* (Alstom Grid, Italy), G. Testin, P. Cardano, M. Sehovac, M. Boutlendj, L. Perego, B. Brunelli, A. Pigini

[OE1-02] Investigation on the Electrical Behavior of Metal Oxide Pigments filled Silicone Gels A. Austermühl* (University of Kassel, Germany), A. Claudi

[OE1-03] Electrical Characteristics and Properties of a Stub (Damaged Toughened Glass Insulator) JM. George* (SEDIVER, France), S. Prat, S. Tartier, Z. Lodi

[OE1-04] On the Influence of Selected Test Parameters on the Retention of Hydrophobicity of Silicone Elastomers in the Dynamic Drop Test under Ac and Dc Stress

C. Bär* (University of Applied Sciences Zittau / Görlitz, Germany), R. Bärsch, J. Lambrecht, G. Simson

[OE1-05] Electrical Characteristics and Voltage Limiting Effect of Epoxy/ZnO-particle Composite Varistors Masafumi Mori* (Kyushu Institute of Technology, Japan), Shinji Ishibe, Masahiro Kozako, Masayuki Hikita

[OE1-06] Hydrophobicity Classification of Distribution Silicone Arresters before and after Solid Layer Contamination

R.C. de Jesus* (UNICAMP, Brazil), J. Pissolato, J.L. de Franco, S.R. de Abreu, D.A. da Silva, M.A.A. Romano, E.C.M. Costa, L.H.I. Mei

[OE2-01] Unobvious Hydrophobic State of HTV Composite Insulators

Hanqi Dai* (Tsinghua University, China), Hongwei Mei, Liming Wang, Chenlong Zhao, Zhidong Jia, Zhicheng Guan

[OE2-02] Effect of Exposure Corona Discharge Against Nature of Change Hydrophobic Surfaces Specimen Ceramic High Voltage Insulator

Harry Prabowo* (Universitas Gadjah Mada, Fakultas Teknik, Indonesia), Tumiran

[OE2-03] Ageing of Silicone Rubber Insulators under High Voltage Direct Current: Results of Inclined Plane Testing and Materials Analyses

N. Mahatho* (Eskom Holdings SOC Ltd, South Africa), I.R. Jandrell, T. Govender, N. Parus

[OE2-04] Research on Breeze Vibration Test Method and Its Reliability of Composite Insulator as Tension String

Jie Wei* (China Electric Power Research Institute, China), Qingfeng Li, Haifeng Gao

[OE2-05] Impact of Long Duration UV Ageing on Silicone Rubber and Filler Material

S. Ganga* (Central Power Research Institute, India), N.Vasudev, G.R. Viswanath, R.S. Shivakumara Aradya

[OE2-06] Improvement of Heat Distribution in DAF-30 Type Bushings

Aydogan Ozdemir * (Istanbul Technical University (I.T.U), Turkey), Ilim Erden, Suat Ilhan

[OE3-01] Assessment of Pollution on Outdoor High Voltage Insulators in Egypt

M.A. Abouelatta* (Benha Universit-Shoubra Faculty of Engineering, Egypt), M.M. Abouelsaad, B.A. Arafa, M.E. Ibrahim

TOPIC E

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[OE3-02] Electro-thermal Model of DC Flashover Discharge of Polluted Insulator

M. El-A. Slama* (University of Sciences and Technology of Oran, Algeria), A. Beroual, H. Hadi

[OE3-03] Effect of Insulator Application on the Leakage Current Performance of Woodpole Distribution Line Structures

K.V. Thejane* (University of the Witwatersrand, South Africa), M.D. Ntshani, H.J. Geldenhuys, J.M. Van Coller, A.A. Beutel, T.D. Mvayo, R. Watson, W.L. Vosloo, A. Khatri

[OE3-04] Improving the Performance of Silicone Rubber Insulator in Severe Environments

M. Albano* (Cardiff University, UK), P. Charalampidis, H. Griffiths, M.A. Haddad, R.T. Waters

[OE3-05] An Experimental Study on Electrostatic Precipitator with Tar Contaminated HV Insulator through UHF Based PD Tests

Philipp Schröder* (Berlin Institute of Technology, Germany), Saravanakumar Arumugam, York Neubauer, Thomas Schoenemann

[OE3-06] Introduction to Decay-like Fracture of Composite Insulator

Jiafu Wang* (Tsinghua University, China), Xidong Liang, Yanfeng Gao

SESSION OE4: Insulation Characteristics 1.

[OE4-01] Non-linear Dielectric Materials’ Practical Application in Stress Grading and Simulation Validation

P.J. Howard* (Alstom Grid, UK), M. Fu, J.G.C. Samuel, F. Perrot, B. Lessard, A. Kavvalaki, M. Timothy

[OE4-02] Spatial-temporal Investigation of Breakdown Mechanism of Lightning Over-voltages: The Measurement System

A. Shirvani* (Chemnitz University of Technology, Germany), W. Schufft, H.P. Pampel, U. Schmidt

[OE4-03] Application of Streamer Criteria for Calculations of Flashover Voltages of Gaseous Insulation with Solid Dielectric Barrier

Y.V. Serdyuk* (Chalmers University of Technology, Sweden), M.H. Ramesh, R.F. Summer, S. Singh, S.M. Gubanski, S. Kumara

[OE4-04] Development and Qualification of GRP Conical Barriers for UHVDC Convertor Transformer Bushings

P.J. Howard (Alstom Grid Research & Technology, UK), F. Perrot, I.R. James, X. Lu, G. Testin, M. Sehovac, A. Pastore, P-A. Monfils

[OE4-05] Investigations on Droplet Initiated Discharges under Hybrid Field Stress

J. Knauel* (RWTH Aachen University, Germany), A. Wagner

[OE4-06] Dielectric Characteristics Analysis of Oil-paper Insulation under Lightning Impulse Voltage Qing Yang* (Chongqing University, China), Wenxia Sima, Potao Sun, Tao Yuan, Xing Lan, Chen Lu

SESSION OE5: Nano-dielectrics

[OE5-01] Mechanisms of Crossover Phenomenon in Tree Length vs. Applied Voltage Characteristics between Base Epoxy and Its Nanocomposites

Toshikatsu Tanaka* (Waseda University, Japan)

[OE5-02] Electrical Tree Partial Discharge Characteristics in Epoxy Nanocomposites D.R. Cornish* (University of the Witwatersrand, South Africa), C. Nyamupangadengu

[OE5-03] Influence of Nanosilica on the Performance of HTV Silicone Rubber for Outdoor Insulation A.D. Germano* (Technische Universität München, Germany), J. M. Seifert, J. Kindersberger

[OE5-04] Resistance to Surface Erosion of Epoxy Resins with Silica and Alumina Nanofillers

Johannes Seiler* (Technische Universität München, Germany), Josef Kindersberger

[OE5-05] Vegetable Oil Based Liquid Nanocomposite Dielectrics in Divergent Electric Fields

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[OE5-06] A Modified Model for Dielectric Loss Tangent of Transformer Oil-based Nanofluids

J. Miao* (State Key Laboratory of Electrical Insulation for Power Equipment, China), M. Dong, L. P. Shen, H. Wang

SESSION OE6: Eco-friendly Oil

[OE6-01] AC Creeping Discharge over Pressboard Surface in Vegetable-based Oils

R. Hanaoka* (Kanazawa Institute of Technology, Japan), F. Murdiya, R. Hashi, K. Miyagi, K. Takamoto, H. Kaneda, S. Nishikawa, H. Koide

[OE6-02] Investigation of Statistical Breakdown in Mineral and Natural Ester Oils under AC Voltage Georgios D. Peppas* (University of Patras, Greece), Eleftheria C. Pyrgioti, Vasilios P. Charalampakos

[OE6-03] Combined Effect of Cellulose Particle and Moisture on Lightning Impulse Breakdown Voltages of Ester Transformer Liquids

Q. Liu* (The University of Manchester, UK), W. Lu, Z.D. Wang

[OE6-04] Dielectric Response of Pressboard Impregnated in Mineral Oil and Synthetic Ester

F. Pratomosiwi* (Graz University of Technology, Austria), N. Pattanadech, A.A. Kemma, G. Pukel, R. Schwarz, Suwarno, M. Muhr

[OE6-05] Study on Static Electrification of Aged Oil and Restrain Mechanism of BTA through Acceleration Test Kenichi Shima* (Kyushu Institute of Technology, Japan), Motoo Tsuchie, Masahiro Kozako, Masayuki Hikita, Hifumi Fukuda

[OE6-06] Breakdown Strength Analysis of the Transformer Insulation Oil due to Different Standards H. Akca* (Yildiz Technical University, Turkey), O. Arikan, C. Kocatepe, C. F. Kumru, R. Ayaz

SESSION OE7: Gas Insulation

[OE7-01] Leader Onset and Breakdown Mechanisms under Non-uniform Electric Field in Air

H. Kojima* (Nagoya University, Japan), K. Hotta, N. Hayakawa, N. Yanagita, T. Kato, T. Rokunohe, H. Okubo

[OE7-02] Investigation of the Temperature Influence on the Breakdown Voltage in Gas Insulated Systems under DC Voltage Stress

Maria Hering* (Technische Universität Dresden, Germany), Steffen Grossmann, Joachim Speck, Uwe Riechert

[OE7-03] Influence of Particles on DC Dielectric Performance of Insulating Gas (SF6)

Thomas Berg* (University of Technology Graz, Austria), Christoph Müller, Thomas Malcher, Michael Muhr, Denis Imamovic

[OE7-04] Transition Mechanism from Pre-discharge to Surface Flashover on Alumina Dielectrics in Vacuum

Y. Nakano* (Nagoya University, Japan), H. Kojima, N. Hayakawa, K. Tsuchiya, H. Okubo

[OE7-05] Effect of Dielectric Coating on Breakdown Characteristics in Switchgear

Su-Youl Woo* (Hyosung Corporation, Republic of Korea), Ki-Ryang Kwon, Kyoung-Bo Seo, Jin-Ho Kim

[OE7-06] Influence of the Gas Volume Size on Spacer Charging in SF6 under DC Stress

M. Schueller* (ETH Zurich, Switzerland), C. M. Franck

SESSION OE8: SF6 Substitutes

[OE8-01] Predicting the Electric Strength of Proposed SF6 Replacement Gases by Means of Density Functional Theory

M. Rabie* (ETH Zurich, Switzerland), C. M. Franck

[OE8-02] Improvement of Gaseous Insulation Performance by Gas/Solid Composite Insulation in High-pressure CO2

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[OE8-03] A Study on the Lightning Impulse Breakdown Characteristics of Dry Air for Design of Eco-friendly Electric Power Apparatus

J. Y. Kim* (Hyundai Heavy Industries, Republic of Korea), Y. M. Kim, B. Y. Seok, J. H. Kwon, K. J. Lim

[OE8-04] AC Creepage Discharges in SF6, CO2, N2, and SF6-CO2 and SF6-N2 Mixtures A. Beroual* (Ecole Centrale de Lyon, University of Lyon, France), F. Sadaoui

[OE8-05] Calculation Model of Sparkover Voltage with Covered Electrode System in Dry Air

A. Kumada* (The University of Tokyo, Japan), S. Matsuoka, S. Yokoyama, K. Hidaka, N. Inoue, T. Donen, M. Tsukima

[OE8-06] Study of Dielectric Breakdown Properties of 50%SF6-50%CF4 and 50%SF6-50%C2F6 Mixtures at Gas Temperatures up to 3000K

Xingwen Li* (Xi’an Jiaotong University, China), Hu Zhao, Shenli Jia, Zongqian Shi

SESSION OE9: Insulation Characteristics 2

[OE9-01] Outdoor Insulator Model Using Electric Circuit Based on Leakage Current

Suwarno* (Institut Teknologi Bandung, Indonesia), A.W. Pradana

[OE9-02] Evaluating the Effect of Paint Coatings on the Corona Performance of Conductor Surfaces K.G. Ilunga * (University of KwaZulu-Natal, South Africa), L. Chetty, N.M. Ijumba, N.K. Chetty, Y. Singh

[OE9-03] Visual Ageing Comparison of Different Power Line Insulator Materials under HVAC and HVDC Excitation at a Coastal Site

G. N. J. Mouton* (NamPower, Namibia), H. J. Vermeulen, J. P. Holtzhausen, W. L. Vosloo

[OE9-04] A Study on Electrical Breakdown Characteristics of Epoxy Resin for Cast Epoxy Resin Transformers K. H. Lee* (Hyundai Heavy Industries Co. Ltd., Republic of Korea), Y. H. Kim, B. Y. Seok

[OE9-05] Dynamic Analysis of Composite Insulator Sheds in High Velocity Wind Field

Zheng-yi Zhu* (Tsinghua University, China), Yan Meng, Zhen-quan Zhang, Guo-xiang Ma, Xi-lin Wang, Zhi-dong Jia

[OE9-06] Non-thermal Plasma Jet and its Application in Surface Modification

Lipeng Zhong* (Xi'an Jiaotong University, China), Shengchang Ji Zhong, Zhiyuan Hao

SESSION PE: High Voltage Insulation Materials and System: Outdoor, Indoor, Gas Insulated, Nano-Dielectric, Eco-friendly Materials and Applications

Monday 26 August 2013, 13:30-17:00 HIT Lobby (6F)

[PE-01] Degradation of Silicone Rubber Insulators under the Effect of Acid Immersion

Bahaa A. Arafa* (Egyptian Electricity Holding Company - Extra HV research cennter, Egypt)

[PE-02] Investigations on Nanocomposites for Outdoor Insulators under Environmental Conditions M. M. Saei Shirazi* (Leibniz Universität of Hannover, Germany), H. Borsi, E. Gockenbach

[PE-03] Generic Pollution Performance Curves for Different Types of Insulators

Igor Gutman* (STRI, Sweden), Peter Sidenvall, Jan Lundquist

[PE-04] Analysis of Icicle Growth Process of Composite Insulator under Energized Condition and Its Impact Factors Zhicheng Guan * (Graduate School at Shenzhen, Tsinghua University, China), Zhidong Jia, Hao Jiang, Yu Deng, Tianzheng Wang, Kangning Wang

[PE-05] Evaluation of AC and LI Breakdown Strength of Electrodes with Thick Eielectric Coating in SF6 and Dry Air

D. van der Born* (Delft University of Technology, Netherlands), A. Girodet, P.H.F. Morshuis, J.J. Smit

[PE-06] The On-line Precise Positioning System of HV Transmission Lines Wind Deflection Based on RTK GPS Technology

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[PE-08] Ingredient of CNTs Dispersed by Barrier Discharge in Organic Solvents

S. Hashimoto* (Kanazawa Institute of Technology, Japan), R. Hanaoka, A. Kono, K. Miyagi, N. Osawa, Y. Kanamaru, H. Anzai

[PE-09] Failure Cause Analysis of 765kV Polymer Insulators Installed at Thermal Power Plants Switchyard

Yunseog Lim* (KEPCO Research Institute, Republic of Korea), Younghong Kim, Hoseong Ahn, Sangbeom Kim, Kooyong Shin, Dongil Lee

[PE-10] Anti-icing Performance of Insulators by Special Surface Treatments

K. Kondo* (NGK Insulators, Ltd., Japan), T. Hayashi, T. Nakachi, M. Maeda, N. Sugawara, D. Nishimura

[PE-11] Propagation Characteristic of Surface Discharge under AC Application Voltage

Junbo Deng* (Xi'an Jiaotong University, China), Hui Ni, Lu Pu, Haibao Mu, Guanjun Zhang, Akiko Kumada, Kunihiko Hidaka

[PE-12] Development of 72 kV Dry Air Insulated Switchgear by Using Vacuum Circuit Breaker with Electromagnetic Actuators

Tomohiro Moriyama* (Hitachi, ltd, Japan), Jun Nukaga, Tatsuro Kato, Toshiaki Rokunohe

[PE-14] Experimental Study of Partial Discharge Insulating Properties for the Feasibility of CF3I/CO2 Substituting SF6

Song Xiao* (State Key Laboratory of Power Transmission Equipment and System Security and New Technology, China), Xiaoxing Zhang, Junjie Zhou, Ju Tang

[PE-15] Dynamics of a Water/Air Interface on Insulating Solid Surface Submitted to DC High Voltage

J. Ndoumbe* (Ecole Centrale de Lyon/University of Douala, France), A. Moukengue Imano, A. Beroual

[PE-16] Effects of Addition of Nano-scale Silica Filler on Erosion, Tracking Resistance and Mechanical Properties of Silicone Rubber

Ryo Inoue* (NGK INSULATORS, LTD., Japan), Takanori Kondo, Tomoya Nakamura, Masahiro Kozako, Masayuki Hikita

[PE-17] Humidity Influence on AC Lightnin Impulse Breakdown Characteristics of Dry-air

J. K. Seong* (Hanyang University, Republic of Korea), J. S. Hwang, J. G. Lee, K. B. Seo, D. H. Jeong, B. W. Lee

[PE-18] Coated Large Electrodes for Corona Prevention

M. Larsson* (ABB AB, Corporate Research, Sweden), O. Hjortstam, L. Ming, L. Arevalo, D. Wu

[PE-19] Surface Flashover Characteristics of GFRP in SF6, CF4, N2 gases for the Design of Cryogenic Bushing

W.J. Shin* (Hanyang University, Republic of Korea), J.S. Hwang, J.K. Seong, J.G. Lee, B.W. Lee

[PE-20] Acoustic Characteristic of Surface Discharge for Hydrophobicity Evaluation of HVDC Insulator Yong Liu* (Tianjin University, China), B. X. Du

[PE-21] Electric Field Relaxation by Adding Small Conductivity on GIS Spacer Surface

K. Kato* (Niihama National College of Technology, Japan), J. Ishiguro, N. Hayakawa, H. Okubo

[PE-22] Moisture Diffusion on the Crystalline Surface of Transformer Insulation Paper under External Electric Field by Molecular Dynamic Simulation

Youyuan Wang* (Chongqing University, China), Tao Yang, Miao Tian, Peng Fan

[PE-23] Impulse Breakdown Characteristics of Rod-plane Electrode System with Covered Rod as Silicone Rubber

J. Y. Sim* (ChungBuk National University, Republic of Korea), J. H. Kwon, Y. J. Park, K. J. Lim

[PE-24] Lightning Impulse and AC Breakdown Characteristics of CO2 Gas under Quasi-uniform Electric Field Using Real-size Gas-insulated Switchgear Model

S. Ka* (Mitsubishi Electric Corporation, Japan), K. Inami, Y. Shimizu, H. Hama, G. Ueta, J. Wada, S. Okabe

[PE-25] A Fundamental Characteristics of Mini-model HTS DC Cable

Woo-Jin Kim* (Gyeongsang National University, Republic of Korea), Hae-Jong Kim, Jeon-Wook Cho, Sang-Hyun Kim

[PE-26] A Study on Sheds and Bubbles for HTS Bushing at Cryogenic Temperature

(22)

[PE-27] Effect of NO on Increase of Supplied Electrons Number under Repetitive Discharge in N2/NO Gas Mixture

Yasutaka Ishiwata* (Tokyo City University, Japan), Toru Iwao, Motoshige Yumoto

[PE-28] Analysis of Degradation Characteristics for Insulation Materials of HVDC XLPE Cables Donguk Kim* (Daejin University, Korea, Republic of Korea), Gijin Nam, Jeongtae Kim

[PE-29] A Study on Optimal Insulation Design of the Ultra High Voltage Spacer Using Boundary Element Method

Hyoungwoo Lim* (Iljin electric, Republic of Korea), Dongik Hwang, Jichul Kim, Wangbyuck Suh

[PE-30] Comparing Partial Discharge Behavior of Indoor Al2O3 and TiO2 Nanocomposites during Thermal Stresses

M. M. Saei Shirazi* (Leibniz Universität of Hannover, Germany), H. Borsi, E. Gockenbach

[PE-31] The Impact on the Short-Arc Time of Half-self-extinguish SF6 Circuit Breaker while Optimizing the Structure of Nozzle

X. Dong* (Tongji University, China), L. J. Jin, S. Q. Li, S. J. Yan, W. H. Zhang

[PE-32] Analysis of Electric Field Distribution along the Insulator Surface by Genetic Algorithms S. Bolat* (Eastern Mediterranean University, Turkey), R. Gholizadeh

[PE-33] Influence of Charged Milli-size Metallic Particle on DC Sparkover Voltage under Quasi-Uniform Field Gap

Daisuke Kunishige* (Fukuoka University, Japan), Yusuke Koba, Takao Matsumoto, Yasuji Izawa, Kiyoto Nishijima

[PE-34] Influence Regularity of Trace O2 on SF6 Decomposition Characteristic under Partial Discharge Fuping Zeng* (Chongqing University, China), Ju Tang, Xiaoxing Zhang

[PE-35] Ice-repellent Behavior of Superhydrophobic Al Surface

Se Won Han* (KERI(Korea Electrotechnology Research Institute), Republic of Korea), Jin Jeong, Dong Pill Kang, Dae Ho Lee

[PE-36] Improvement of Withstand Voltage Performance under Heavy Rain Condition of Hollow Core Insulators with Larger Water-cut Sheds

K. Kondo* (NGK Insulators, Ltd., Japan), J. Zhou, X. Yu, R. Huang and Z. Su

[PE-37] Forecasting Method for Leakage Current of Contaminated Insulator under Saturated Moist

Chen-Long Zhao* (Electrical Engineering, China), Han-Qi Dai, Li-Ming Wang, Hongwei Mei, Zhicheng Guan, Zhi-Cheng Zhou, Song Gao

[PE-38] A Study on the Relation Between Leakage Current and Specific Creepage Distance

M. Rostaghi-Chalaki* (Research assistant of University of tehran, Iran), A. A. Shayegani-Akmal, H. Mohseni

[PE-39] Investigation on Leakage Current of ZnO Surge Arrester under Thermal and Artificial Pollution

M. Rostaghi-Chalaki * (Research Assistant of University of Tehran, Iran), H. Hamidi, I. Ahmadi-Joneidi, A. A. Shayegani-Akmal

[PE-40] Effect of Exposure Corona Discharge against Nature of Change Hydrophobic Glass Surfaces Specimen High Voltage Isolator

Harry Prabowo* (Universitas Gadjah Mada, Fakultas Teknik, Indonesia), Tumiran

[PE-42] Partial Discharge of Polymeric Insulators under Artificial Pollution

H. Saadati* (University of Tehran, Iran), A.A Shayegani, H. Borsi, E. Gockenbach

[PE-43] Calculation of Leakage Current and Electric Field of Polymeric Insulator under Pollution Layer

I. Ahmadi-Joneidi* (Research assistance of High voltage labratory, Iran), M. Rezaei, M. Modarres, J. Sahragard

[PE-44] Influence of Dilute CO2 Concentration on AC/DC Sparkover in Atmospheric Air

Daisuke Shimizu* (Fukuoka University, Japan), Tatsuya Ogawa, Takao Matsumoto, Yasuji Izawa, Kiyoto Nishijima

[PE-45] Study on Reliability and Experience of Composite Insulators Used as Tension String of 1000kV UHV AC Transmission Lines in China