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海上风电机组的谐波适应性研究

ABSTRACT第6-7页
Chapter 1 Introduction第8-17页
    1.1 Global Level Wind Energy Background第8-9页
    1.2 Country-specific Wind Energy Profile第9-11页
    1.3 Advancement and Improvement in Wind Power Technology第11-13页
    1.4 Power Quality Issues in Grid-connected Wind Turbines第13-16页
        1.4.1 Understanding of DFIG based Offshore Wind Power Technology第14-15页
        1.4.2 Potential Challenges in Grid-connected Offshore Wind Farm第15-16页
    1.5 Main Work第16-17页
Chapter 2 Harmonics in Offshore Wind Farm第17-26页
    2.1 Basic Background of Harmonics第17页
    2.2 Wind Farm Harmonics第17-20页
        2.2.1 Significance of Resonance Analysis of a Wind Farm第18页
        2.2.2 Sources of Harmonics of Wind Farm第18-19页
        2.2.3 Possible Risk of Harmonic Resonance第19-20页
    2.3 Mitigation of Harmonics of Wind Farm第20-22页
        2.3.1 Preventive Method of Harmonics第20-21页
        2.3.2 Passive Filters in Harmonic Mitigation第21-22页
    2.4 Power Quality Standards of Wind Turbines第22-25页
        2.4.1 Power Quality Characteristics第22-23页
        2.4.2 Harmonic Current Limitations based on German Electricity Association第23-25页
    2.5 Summary第25-26页
Chapter 3 Harmonic Analysis of Offshore Wind Farm第26-39页
    3.1 Harmonic Analysis Background and its Methods第26-28页
        3.1.1 Frequency Scan第26-27页
        3.1.2 Harmonic Resonance Mode Analysis第27-28页
    3.2 Detailed Understanding of DFIG第28-31页
        3.2.1 Configuration of DFIG第29-30页
        3.2.2 DFIG Model with its Simplified Description第30-31页
    3.3 Analysis of the Study System第31-33页
        3.3.1 Typical model of Transformer第32页
        3.3.2 Power Transmission Cables第32-33页
    3.4 Harmonic Analysis第33-36页
        3.4.1 Causes of Harmonic Resonance第34-35页
        3.4.2 Harmonic Mitigation Technique第35-36页
    3.5 Simulation Results第36-37页
    3.6 Summary第37-39页
Chapter 4 Harmonic Grid Adaptability第39-50页
    4.1 Introduction to Grid Adaptability第39-42页
        4.1.1 Testing Equipment第40-41页
        4.1.2 Method to Produce Harmonics第41-42页
    4.2 Structural Briefing of Harmonic Grid Adaptability第42-45页
        4.2.1 Modeling of the System Elements第43-44页
        4.2.2 Equivalent Circuit of the System第44-45页
    4.3 Resonance Analysis第45-47页
        4.3.1 Cable-length Specific Resonance Variation第45-46页
        4.3.2 Resonance Frequency Shifting第46-47页
    4.4 Simulation Results第47-49页
    4.5 Summary第49-50页
Chapter 5 Harmonic Mitigation in LVRT Testing of Offshore Wind Farm第50-57页
    5.1 Contemporary on-site LVRT Testing Procedure第51页
    5.2 No Load LVRT Testing Scheme第51-53页
    5.3 Research Method第53-54页
    5.4 Simulation Results第54-56页
    5.5 Summary第56-57页
Chapter 6 Conclusions第57-59页
References第59-62页
Acknowledgements第62-63页
Research outcomes of the author during postgraduate period第63-64页
学位论文评阅及答辩情况表第64页

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