In addition to connection to a three-phase electricity grid, the PV generator is also connected to three groups of three-phase loads, each with an active power of 20 kW. The power quality parameters studied are voltage and current unbalance, as well as voltage and current harmonics in eight scenarios with a PV generator connected to a three-phase grid. The results showed that at a fixed solar radiation level, the more PV generators connected to the three-phase grid, the average THD of voltage and current increased.
In addition to being connected to a three-phase electricity grid, the PV generator is also connected to three groups of three-phase loads, each with an active power of 20 kW. The grid quality parameters studied are the value of three-phase voltage and current unbalance, as well as voltage and current harmonics in eight scenarios with a PV generator connected to a three-phase grid. Figure 1 shows a system model of a single 100 kW PV generator connected to a three-phase grid.
The PV generator produces output voltage and serves as the input for the DC/DC boost converter. The power quality parameters studied are voltage and current unbalance, as well as voltage and current harmonics in eight PV generator scenarios connected to three-phase distribution on the PCC bus at variable temperature and irradiation levels. A three-phase circuit breaker (CB) is used to connect and disconnect a single matched filter between a PV generator with a three-phase system.
Photovoltaic Model
There are two criteria used in the analysis of harmonic distortion, the voltage distortion limit and current distortion limit [13]. There are several standards that can be used to determine level of voltage unbalance in three-phase systems, e.g. Using Equation 8, value of unbalance voltage is expressed in percentage (%) and is defined as follows; Vavarage is the average value of maximum voltage on phase a, b, c, (volt), Va, b, c min is minimum voltage on phase a, b, c, (volt), Va, b, c max is maximum voltage on phase a, b, c (volt.
Using the same equation, the percent unbalance current can be calculated by replacing the voltage magnitude with the amperage.
Single Tuned Filter
The value of the low-impedance Rf for each single-tuned filter is affected by the quality factor of filter Q. Under conditions without the use of single-tuned filter, the radiation level is fixed and the temperature is increased (200C to 400C), voltage average harmonic ( THDV) are relatively the same. Otherwise in the conditions without filter and temperature remains, but in radiation level increases, then voltage average harmonics increase.
Under the same conditions, using a single-tuned filter, a fixed irradiation level and temperature increases (200°C to 400°C), the mean harmonic voltage is relatively the same. The difference is that a single-tuned filter can suppress the 5th harmonics, so the average voltage harmonics can be significantly reduced compared to a system without using filters, to an average of less than 0.5%. In the system using a single tuned filter, the lowest voltage average harmonics are generated at an irradiation level of 400 W/m2 and a temperature of 200C as 0.22%, while the highest voltage average harmonics occur at an irradiation level of 800 W/ m2 and a temperature of 250C. 0.43%.
Under conditions of no use of a single tuned filter, fixed irradiance levels and temperature increases (200C to 400C), the current average harmonics (THDI) are relatively the same. While under no-filter conditions and temperature remain the same but the irradiance rate increases, the current average harmonics increase. The lowest current average harmonic generated at irradiance level 400 W/m2 and temperature 250C is 1.654%, while the highest current average harmonic occurs at irradiance level 1000 W/m2 and temperature 200C 1.957%.
Under the conditions of using a single tuned filter, fixed radiation level and increasing temperature (200C to 400C), the average value of the current harmonic is relatively the same. Under unfiltered conditions and fixed temperature, but the radiation level is increasing, the average current harmonics are also increasing. Using a single tuned filter can eliminate the 5th harmonics, so it can reduce the actual average harmonics compared to no filter to the average below 0.2%.
Applying a single tuned filter capable of suppressing 5th harmonics can therefore significantly reduce the average voltage harmonics. A single tuned active filter is also effective enough to eliminate 5th harmonics in order to slightly reduce the average current harmonic.
CONCLUSION
The maximum value of the phase voltage of the system using a single tuned filter at all radiation levels and temperatures (200C, 250C and 300C) is equal to 308 volts and at temperatures (350C and 400C) the value increases to 310 Volts respectively , resulting in the same imbalance. voltage of 0%. The lowest harmonic value generated at the radiation level of 400 W/m2 and the temperature of 250C is 2.58%, while the highest harmonic appears at the radiation level of 800 W/m2 and the temperature of 250C is 4.18%. In the unfiltered state and fixed temperature, but the radiation level is increasing, then the average harmonic of the voltage also increases.
In the same condition, the single-tuned filter is able to balance maximum phase currents of 10.45 A each, resulting in an unbalanced current equal to 0%.
10 REFERENCES
POWER QUALITY PERFORMANCE OF MULTI
INTRODUCTION
Minas Patsalides, et.al investigated an effect of solar radiation on grid connected PV generator to power quality e.g. The weakness of study is not considering temperature effect as variable environmental input of PV generator [3]. The shortcoming of research is only performed on a single phase system as well as fixed solar radiation and temperature [4].
The analysis was performed on a 16-bus system model and the result showed that high level penetration of grid-connected PVs would cause a number of power quality problems e.g. The weakness of the research is the analysis carried out only on voltage harmonics and does not take into account the environmental temperature condition [5]. Research on the power quality characteristics of a number of three-phase PV inverters in roof-top PV, including harmonic distortion, voltage fluctuations, and reactive power and power factors have been carried out by K.P.
Disadvantages of the research is performed only at a single level of radiation and temperature (1000 W/m2 and 250C) and does not take into account the limitation of harmonic enhancement (current and voltage) according to IEEE. While at the increasing level of solar radiation, the average voltage and current of the THD network also increased. The disadvantage is that the research analysis is performed at a fixed temperature level of 400C, while the fact shows that the ambient temperature is the main input variable for a PV generator, in addition to the solar radiation, whose value always changes over time [8].
The aim of this paper is to improve the performance of power quality due to the influence of multi PV integration to low voltage distribution line of 380 kV (phase-phase) 50 Hz under variable solar temperature and irradiance level. The model consists of three PV generator groups with 100 kW active power each was used in this study. The bandpass filter model (single tuned) is used to improve power quality using two conditions before and after the filter is installed.
The simulation parameter results in PCC bus are further validated to limit ANSI/IEEE 241-1990 (voltage and current unbalance) and IEEE 519-1992 (THD voltage and current), as the basis for determining power quality level. In this section, example cases studied are presented and the results are verified with those of Matlab/Simulink.
METHODOLOGY 1. Research Method
- Simulation Parameters
The article presents the performance of power quality improvement on a three-phase network of a PCC bus due to the influence of the integration of a PV generator into a 380 kV (phase-phase) 50 Hz low-voltage distribution system at different temperature and irradiation conditions . The circuit model simulation is performed to determine the voltage and current curve of the three-phase distribution line on the PCC bus. The next step is to determine the voltage and current unbalance, as well as the voltage and current harmonics or the total harmonic distortion (THD) of the three-phase power grid on the PCC bus in each scenario.
A single-tuned filter consisting of inductor Lf, capacitor Cf and small damping resistor Rf is connected in parallel with non-linear loads to provide low-impedance paths for specific harmonic frequencies, thus resulting in the absorption of the dominant harmonic currents flowing from the load. In this paper, a single-tuned active filter model is used to reduce the 5th harmonics. As shown in Figure 4, the filter passband (PB) is defined as bounded by the frequencies at which the filter reactance equals its resistance; that is, the impedance angle is 45˚ and the magnitude is 2R.
Analysis of the results begins by determining the maximum and minimum network voltages in each phase to calculate the unbalanced voltage using equation 8, as well as the voltage THD of the three-phase network on the PCC bus without and with a single tuned filter. Using the same procedure and equation, we obtain the unbalanced current and instantaneous THD of the three-phase network. Several PV models with three-phase grid-connected generators without and with single-set filters at all irradiance and temperature levels result in the peak phase voltage (phase A, B, and C) being relatively stable at 308 and 310 volts, respectively, creating an unbalanced voltage 0%.
The maximum phase current value, for system without single tuned filter at all irradiance and temperature levels are different as 10 A, respectively, resulting in unbalanced current of 16.0991%. Under the same condition, single-tuned filters are able to balance maximum phase currents (phase A, B and C) of 10.45 A respectively, so that they can reduce unbalanced current to 0%. The implementation of single tuned filter can reduce unbalanced current values according to ANSI/IEEE 241-1990 limit.
The use of single tuned filter is the most effective to suppress the 5th harmonic, so it can reduce the average value of voltage and current harmonics significantly within IEEE 519-1992. Amirullah, Ontoseno Penangsang, Adi Soeprijanto, (2016), Power Quality Analysis of Integration Photovoltaic Generator to Three Phase Grid under Variable Solar Irradiance Level, TELKOMNIKA, Vol. Young-Sik Cho and Hanju Cha, (2017), Single-tuned Passive Harmonic Filter Design Considering Variance of Tuning and Quality Factor, Journal of International Council on Electrical Engineering July 2017, Taylor and Francis Publisher.
RUNDOWN ICTA JULY 29, 2017
PARALLEL SESSION ROOM “A”
APPLYING USABILITY TESTING ANALYSIS OF INDONESIAN ONLINE TRAVEL AGENT WEBSITE
ANALYSIS OF SERVICE QUALITY INFLUENCE ON E-COMMERCE CUSTOMER SATISFACTION (CASE
A Reni Masrida,
EFFECT OF MIXTURE COMPOSITION OF BAGASSE CANE, COCONUT SHELL CHARCOAL, AND
TAPIOCA ADHESIVE TO BIOEPELET QUALITY
BI-DIRECTIONAL FLYBACK DC-DC CONVERTER
A SINGLE BOARD BUCK AND BOOST
BIDIRECTIONAL DC-DC CONVERTER FOR DC HOUSE ENERGY MANAGEMENT SYSTEM
PAVEMENT CONDITION INDEX (PCI) SURVEY A
TECHNOLOGY MANAGEMENT OF SUNFLOWER SEED PROCESSING INDUSTRIAL AS A
SUSTAINABLE HEALTH PRODUCT
ROOM “B”
SINGLE EXPONENTIAL SMOOTHING METHOD IN FORECASTING NUMBER OF RAINY DAYS
CLASSIFICATION OF ACTIVE SELLING DETERMINATION FOR BOOK PRODUCTS
PT.KOMPAS GRAMEDIA NON GAM DIVISION)
APPLICATION OF K-MEANS METHOD IN MONITORING SYSTEM OF BASED ON
ANDROID STUDENTS (CASE STUDY: SMK YPM 4 TAMAN)
CLASTERING TYPE OF BEST GRAMEDIA PUBLISHER SELLER PAPER USING SHRINKING
Dimas Adityo, Aldita Budi Susanto,
IMPLEMENTATION OF BARCODE AND QR- CODE SCANNER ON ANDROID APPS RETAIL
Dimas Adityo, Mustofa Syawaluddin,
CLASSIFICATON OF COMPUTER NETWORK ATTACTS BY USING IDS SNORT BASED ON
B Rizky Yudha Pramudhika,
CLASSIFICATION OF SCOUT SKILL USING
NAÏVE BAYES CLASSIFIER ALGORITHM B
PARALLEL SESSION ROOM “C”
POWER QUALITY PERFORMANCE OF MULTI PHOTOVOLTAIC CONNECTED TO GRID UNDER
IRRADIANCE LEVEL
CONTROL SYSTEM AND MONITORING OF SOLAR CELL LIGHTING BASED ON ANDROID USING
FUZZY LOGIC BASED FAULT CLASIFICATION OF INDUCTION MOTOR BEARING USED IN HOME
DC MOTOR CONTROLLER DESIGN FOR
TRACKING ANTENNA SYSTEM BASED ON CVBS ANALOG SIGNAL PROCESSING
DESIGN ANALYSIS OF SOLAR POWERED SYSTEM
VIBRATION DATA CLASSIFICATION WITH FAST
FOURIER TRANSFORM AND NEUTRAL NETWORK C Richa Watiasih,
MAZE SOLVING RETURN TRIP FOR MOBILE
ROBOT USING DEEP FIRST SEARCH METHOD C
POWER FACTOR CORRECTION OF THREE PHASE AC-DC CONVERTER VIA CURRENT CONTROLLER
A Son Haji,
BOSST CONVERTER DESIGN DC-DC THROUGH
INVERTER PROCESS AND VOLTAGE MULTIPLIER C
ROOM “D”
THE APPLICATION OF COST-SIGNIFICANT MODEL ON THE ESTIMATED COST OF
RESIDENTIAL PROJECT IN SURABAYA, GRESIK, AND SIDOARJO
DOUBLE FUZZY-PI CONTROLLER BASED SPEED CONTROL OF PERMANENT MAGNET
SYNCHRONOUS MOTOR
SELECTING PRIORITY ON INFORMATION TECHNOLOGY WORK PLANS USING AHP : A
Mahaputra Hidayat
INTELLIGENT EDUCATION MONITORING
SYSTEM USING ARTIFICIAL NEURAL NETWORK BASED ON DATA MINING APPROACHES
THE IMPLEMENTATION OF COMPETENCY CERTIFICATION EXPERTISE AND SKILLS OF
ANIMATION CONTROL FOR DIGITAL STORYTELLING USING HAND MOTION
D Rani Purbaningtyas,
ANALYSIS AND DESIGN SIDOARJO ON HANDS (SOH) SYSTEM FOR SUPPORTING SIDOARJO
D Rarasmaya Indraswari,
MELANOMA CLASSIFICATION USING
AUTOMATIC REGION GROWING FOR IMAGE SEGMENTATION
SIMSOYA3D: A DATA-DRIVEN'S SIMULATOR OF SOYBEAN'S GROWTH MODELING USING
TRAINABLE PARAMETRIC L-SYSTEM AND ANFIS ALGORITHM
O LLo
![Figure 3 shows the equivalent circuit of a solar panel. A solar panel is composed of several PV cells that have series, parallel, or series-parallel external connections [9]](https://thumb-ap.123doks.com/thumbv2/123dok/10421186.0/11.892.124.836.96.229/figure-equivalent-circuit-composed-parallel-parallel-external-connections.webp)
