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含大型海上风电场的多端直流输电系统协调运行与控制

Abstract第4-5页
摘要第6-12页
Acronym第12-14页
Symbols第14-15页
Chapter 1: Introduction第15-24页
    1.1. Background and Significance of Study第15-18页
        1.1.1. Voltage source Converter (VSC) – HVDC over Line Commutated Converter(LCC) - HVDC第16-18页
    1.2. Review of related research第18-20页
    1.3. Objective of the thesis and main contributions第20-22页
    1.4. Outlines of the Thesis第22-24页
Chapter 2: Modelling and Control of Multi-terminal VSC-HVDC System第24-47页
    2.1. Introduction第24-25页
    2.2. VSC Modeling Techniques第25-27页
    2.3. Continues Time Equivalent Model第27-30页
        2.3.1. Modeling of Grid side VSC第27-29页
        2.3.2. Modeling of Wind Farm side VSC第29-30页
    2.4. Control of VSC-HVDC Terminals第30-35页
        2.4.1. Passive and Active ac Network Connections第30-32页
            2.4.1.1. VSC-HVDC for Passive Network第30-31页
            2.4.1.2. VSC-HVDC for Active ac Network第31-32页
        2.4.2. Inner Current Controllers for Active Grid Connections第32-33页
        2.4.3. Active Power Controller第33-34页
        2.4.4. Reactive Power Controller第34-35页
        2.4.5. AC voltage controller for GS-VSC第35页
    2.5. Voltage - Current (V-I) Characteristics of VSCs第35-38页
        2.5.1. Voltage - Current Characteristics of WF-VSC第35-37页
            2.5.1.1. Normal Operation第36页
            2.5.1.2. Voltage Droop Mode第36页
            2.5.1.3. Current Limit Mode第36-37页
        2.5.2. Grid connected VSC (GS-VSC)第37-38页
            2.5.2.1. Normal Operation (Droop Control)第37页
            2.5.2.2. Current Limit第37-38页
    2.6. Direct Voltage Control Methods第38-44页
        2.6.1. The Requirements on the dc Power Flow Control第39-40页
        2.6.2. The Voltage Margin Control Method第40-41页
        2.6.3. Voltage droop control第41-43页
        2.6.4. DC Overvoltage Controller第43-44页
    2.7. Operation of Two-terminal VSC-HVDC System第44-46页
        2.7.1. Equilibrium point analysis of a two terminal VSC-HVDC system第45-46页
    2.8. Summary第46-47页
Chapter 3: Coordinated Operation and Control of VSC based Multi-terminal High Voltagedc Transmission Systems第47-76页
    3.1. Introduction第47-48页
    3.2. Control and Connections of Multi-terminal VSC-HVDC第48-60页
        3.2.1. DC Voltage Droop Control on Grid side Converters第48-52页
            3.2.1.1. V-I Characteristics of Configuration-1第50-52页
        3.2.2. DC Voltage Droop Control on Wind Farm side Converters第52-54页
            3.2.2.1. V-I Characteristics of Configuration-2第53-54页
        3.2.3. Generalized Droop Control Strategy第54-60页
            3.2.3.1. Operating modes of Generalized Droop Control Strategy第55-58页
            3.2.3.2. V-I Characteristics of Configuration-3第58-60页
    3.3. Established Experimental Workbench第60-63页
        3.3.1. Power Converter第60-62页
        3.3.2. DC Grid第62页
        3.3.3. M-HVDC Earthing Configuration第62-63页
    3.4. Experimental Results第63-74页
        3.4.1. DC Voltage Droop Control on Grid Side Converters第63-66页
        3.4.2. DC Voltage Droop Control on Wind Farm side Converters第66-68页
        3.4.3. Generalized Droop Control Strategy第68-74页
            3.4.3.1. Scenario 1第68-71页
            3.4.3.2. Scenario 2第71-74页
    3.5. Summary第74-76页
Chapter 4: A Novel Multi-terminal VSC-HVDC Transmission Topology for Offshore WindFarms第76-100页
    4.1. Introduction第76-77页
    4.2. Multi-terminal VSC-HVDC and its Prerequisite第77-78页
    4.3. HVDC Switchgear第78-82页
        4.3.1 HVDC Circuit Breaker第78-81页
            4.3.1.1. Electromechanical HVDC Circuit Breaker第78-79页
            4.3.1.2. Solid State HVDC Circuit Breaker第79-80页
            4.3.1.3. Hybrid HVDC Circuit Breaker第80-81页
        4.3.2. Ultra-fast Thomson Coil based Actuator第81-82页
    4.4. Multi-terminal VSC-HVDC Circuit Topologies第82-90页
        4.4.1. Point to Point Topology第83-84页
        4.4.2. General Ring Topology第84页
        4.4.3. Star Topology第84-85页
        4.4.4. Star with Central Switching Ring Topology第85-86页
        4.4.5. Wind Farm Ring Topology第86-88页
        4.4.6. Substation Ring Topology第88页
        4.4.7. Two Wind Farm and One Platform Topology第88-90页
    4.5. Topological Evaluation第90-99页
        4.5.1. Simulations第90-94页
            4.5.1.1. Simulation Results of Wind Farm Ring Topology第90-92页
            4.5.1.2. Simulation Results of Substation Ring Topology第92-93页
            4.5.1.3. Simulation Results of Two Wind Farm and One Platform Topology第93-94页
        4.5.2. General Case Study for Techno-Economic Comparison第94-96页
        4.5.3. Remarks第96-99页
    4.6. Summary第99-100页
Conclusions第100-103页
References第103-114页
Publications during the doctoral study第114-116页
Acknowledgement第116-117页
Resume第117页

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