CONTENT LIST
TITLE... i
APPROVAL PAGE... ii
CONTENT LIST... iii
CHAPTER I INTRODUCTION... 1
2.1...Backg round... 1
2.2Problem Statement... 2
2.3Objectives... 2
2.4...Pote ntial Benefits... 2
CHAPTHER II LITERATURE REVIEW... 3
2.1 Power Quality... 3
2.2 Power Quality Issues... 3
2.3 Power Quality Events ... 4
2.3.1Transients ... 4
2.3.2 Voltage Sag... 4
2.3.3 Voltage Swell... 4
2.4 Power Quality Steady Stat Deviations ... 5
2.5 General Causes of Voltage Sag... 6
2.5.1 Voltage Sag Due to Faults ... 6
2.5.2 Voltage Sag Due to Motor Starting... 6
2.5.3 Voltage Swell ... 7
2.5.5 General Causes of Voltage Swell ... 8
2.6 Unified Power Quality Conditioner (UPQC) ... 8
2.7 MC-UPQC Structure ... 10
CHAPTER III RESEARCH METHOD ... 11
3.1 Contribution... 11
3.2 Flow Chart of the Research Methodology... 13
CHAPTER IV RESULT AND ANALYSIS... 15
4.1 Results and Discussion... 17
CHAPTER V CONCLUSION... 24
5.1 Conclusions... 24
FIGURE LIST
Figure 2.1 Power Quality Issues
... ... 4
Figure 2.2 An Example of Voltage Sag
... ... 5
Figure 2.3 Voltage Swell in the Phase-to-Phase Voltage Between a Faultless Phase and the Faulted Phase During an SLG Fault. ... ... 8
Figure 2.4 Typical Multi-UPQC Used in a Distribution System ... ... 9
Figure 2.5 Multi-UPQC Structure
... ... 10
Figure 3.1 Matlab simulation model of UPQC with adaptive
multi converter
... ... 11
Figure 3.2 Flow chart of the research
... ... 13 Figure 4.1 ... ... 15
Figure 4.2 One-phase voltage sag fault scenario with and without Adaptive
multi converter
Figure 4.3: Two-phase voltage sag fault scenario with and without Adaptive
multi converter
... ... 18
Figure 4.4 Three-phase voltage sag fault scenario with and without
Adaptive multi converter
... ... 19
Figure 4.5 One-phase voltage swell fault scenario with and without
Adaptive multi converter
... ... 20
Figure 4.6 Two-phase voltage swell fault scenario with and without
Adaptive multi converter
... ... 21
Figure 4.7 Three-phase voltage swell fault scenario with and
without Adaptive multi converter
... ... 22
