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电力变压器差动保护中涌流的辨识

摘要第5-6页
ABSTRACT第6页
CHAPTER 1 INTRODUCTION第9-16页
    1.1 Background第9-10页
    1.2 Research Status and Problem Statement第10-14页
        1.2.1 Harmonic Restraint第10-11页
        1.2.2 Flux, Voltage Restraints and Transformer Inductance Scheme第11-12页
        1.2.3 Wave Shape Recognition Methods第12-13页
        1.2.4 Pattern Recognition Methods第13-14页
            1.2.4.1 Artificial Neural Network第13-14页
            1.2.4.2 Fuzzy System第14页
    1.3 Research Significance and Objective第14-15页
    1.4 Thesis layout第15-16页
CHAPTER 2 DIFFERENTIAL PROTECTION AND INRUSH CURRENT第16-30页
    2.1 Introduction第16页
    2.2 Differential Protection第16-19页
        2.2.1 The Principle of Differential Protection第16-17页
        2.2.2 CTs and CTs Connections第17-18页
        2.2.3 Differential Protection Considerations第18-19页
    2.3 The Percentage Differential Protection第19-23页
        2.3.1 Implementation of Percentage Differential Protection第19-22页
        2.3.2 Percentage Differential Protection Challenges第22-23页
    2.4 Transformer Inrush Current第23-30页
        2.4.1 The Nature of the Inrush Current第23-24页
        2.4.2 The Inrush Current Characteristics第24-26页
        2.4.3 Analysis of the Inrush Current第26-30页
CHAPTER 3 THE APPROACH OF INRUSH CURRENT IDENTIFICATION第30-48页
    3.1 Introduction第30页
    3.2 Wavelet Transform第30-34页
        3.2.1 Introduction第30-31页
        3.2.2 Discrete Wavelet Transform DWT第31-33页
        3.2.3 DWT and Filters Bank第33-34页
    3.3 Power System Configuration第34-39页
        3.3.1 Power Transformer Model第34-36页
        3.3.2 Proposed Electric Power System第36-39页
    3.4 Proposed Approach第39-48页
        3.4.1 Relative Wavelet Energy第40-41页
        3.4.2 Discrimination Criterion第41-48页
CHAPTER 4 EVALUATION THE PERFORMANCE OF THE APPROACH第48-60页
    4.1 Introduction第48页
    4.2 Results and Discussion第48-60页
        4.2.1 The Case of Energizing the Power Transformer (Inrush Current)第49-52页
        4.2.2 The Case of Internal faults at the Power Transformer Terminals subsequent to its Energization第52-56页
        4.2.3 The Case of Internal faults at the Power Transformer Terminals during Normal Operation第56-60页
CHAPTER 5 CONCLUSION AND FUTURE WORK第60-62页
    5.1 Conclusion第60-61页
    5.2 Future Work第61-62页
REFERENCES第62-67页
ACKNOWLEDGEMENT第67页

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