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Analysis of Power Losses in Distribution Network and Effects of Capacitor Placement based on MATPOWER in Myanmar

초록/요약

In Myanmar Power System Sector, the ministry of electricity and energy has been planning generation power plants, national grids and substations to meet the growing demand for electricity, to ensure power system stability and to supply power in full capacity. The main objectives of Myanmar electricity sector are to ensure adequate electric power supply, to ensure the reduction loss of electricity and to ensure the qualified electric power distribution to the users systematically and continuously. The Ministry is also endeavoring ways and means to reduce high power losses and upgrading the distribution system. By reducing distribution power losses, various benefits are obtained in the power system. This paper aims to analyze the power flow and capacitor placement of the distribution system for decreasing power loss and to enhance the voltage magnitude. The methodology is the novel analytical method to consider the useful capacitor locations and size in the distribution network by using MATPOWER software. At first, MATPOWER software is used to solve the power flow analysis in the applied distribution network. And then, the loss sensitivity constant (LSC) is determined to find the sufficient capacitor locations and sizes. The proposed method is applied to the actual 30 bus radial distribution network of Mandalay in Myanmar. Moreover, the saved energy is considered in the case study. The simulation results show that the power loss is decreasing by placing the capacitor in the base case as well as the voltage magnitude is increasing. It provides that the result of the upgraded distribution network with a useful capacitor can be determined the reducing power loss, improving voltage profile, and saved energy.

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목차

Table of Contents
List of Tables v
List of Figures vi
List of Abbreviations viii
CHAPTER I 1
Introduction 1
1.1 Background of Myanmar 1
1.2 The Status of Electricity in Myanmar 1
1.3 Statement of Problem 3
1.4 Purpose of Study 4
1.5 Research of Hypothesis 5
1.6 Scope of Thesis 5
CHAPTER II 6
Literature Review 6
2.1 Distribution network 6
2.2 Reactive Power Compensation 7
2.3 Introduction to Capacitor Replacement 8
2.4 Benefits of Capacitor Installation 8
2.5 Allocation of Capacitor Placement Methods 9
2.6 Summary of Literature Review 10
CHAPTER III 11
Methodology 11
3.1 Introduction to MATPOWER Software 11
3.2 Running the Simulation 11
3.2.1 Preparaing Input Data 12
3.2.2 Solving the Case 12
3.2.3 Accessing the results 12
3.3 Modeling 12
3.3.1 Data Formats 13
3.3.1.1 Bus Data Format…..………………………………………………………………………..13
3.3.1.2 Generator Data Format….………………………………………………………………..14
3.3.1.3 Branch Data Format………………………………………………………………………..14
3.4 Mathematical Model for Methodology 15
3.4.1 Loss Sensitivity Constant 15
3.5 The Proposed Algorithm 16
3.5.1 Problem Formulation 16
3.5.2 Flow Chart 17
CHAPTER IV 19
Implementation of Power Flow Results and Capacitor Placement 19
4.1 Introduction to the Applied Distribution Network 19
4.2 Case Study Distribution Network 20
4.3 Performance of Load Flow Analysis 21
4.3.1 Bus Data and Branch Data Pattern 21
4.3.2 Accessing Load Flow Results 22
4.4 Implementing for Control Variables 25
4.5 Performance of Power Flow Results with Capacitors Installation 25
4.6 Loss Sensitivity Constant (LSC) Results 27
4.7 Implementing the Different Load Levels 28
4.8 Test Results-I (Base Case with Different Load Level) 29
4.9 Test Results-II 30
4.9.1 Comparison of Power Loss and Voltage Magnitude in Base Case 31
4.10 Test Results-III 32
4.10.1 Comparison of Power Loss and Voltage Magnitude in Base Case 33
4.11. Test Results-IV 35
CHAPTER V 37
Conclusion 37
5.1 Summary of Results 37
5.2 Accessing Total Energy Results of Test I 38
5.3 Accessing Total Energy Results of Test II (with one Capacitor) 39
5.4 Accessing Total Energy Results of Test III (with two Capacitors) 40
5.5 Accessing Total Energy Results of Test IV (with two Capacitors) 41
5.6 Comparison of the energy saving of the applied distribution network 41
5.7 Conclusion 43
5.8 Future Work for Energy Saving of Power System in Myanmar 44
References 45
Appendix A 48
Bus Data for Applied Distribution Network 48
Appendix B 50
Branch Data for Applied Distribution Network 50

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