| 引用本文: | 彭衍建,李 勇,曹一家.基于VSC-MTDC的大规模海上风电并网系统协调下垂控制方法[J].电力自动化设备,2016,36(8): |
| PENG Yanjian,LI Yong,CAO Yijia.Coordinated droop control for large-scale offshore wind farm grid-connected based on VSC-MTDC system[J].Electric Power Automation Equipment,2016,36(8): |
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| 摘要: |
| 提升电压源型换流器的多端直流输电（VSC-MTDC）系统的传输功率和传输效率对于大规模风电并网而言至关重要。提出VSC-MTDC系统协调下垂控制方法，并制定3种典型的控制模式，从而实现风电场最优功率输送与VSC-MTDC系统效率的最大化。建立用于海上风电场并网的四端直流输电系统仿真模型，结果表明，所提协调下垂控制方法不仅能实现有功功率在VSC-MTDC系统中的最优分配，而且能稳定直流电压，增强VSC-MTDC系统的运行稳定性。 |
| 关键词: VSC-MTDC 海上风电场 下垂控制 有功功率分配 风电 并网 |
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| 基金项目:国家自然科学基金资助项目（51520105011）；湖南省科技重大专项（2015GK1002）；国网湖南省电力公司项目（5216-A213509X）；国家电网公司科学技术项目（面向智慧城市的智能电网园区能源优化管理关键技术研究与应用） |
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| Coordinated droop control for large-scale offshore wind farm grid-connected based on VSC-MTDC system |
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PENG Yanjian, LI Yong, CAO Yijia
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College of Electrical and Information Engineering，Hunan University，Changsha 410082，China
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| Abstract: |
| It is especially essential for large-scale offshore wind farm to improve the transmission power and efficiency of VSC-MTDC systems. A coordinated droop control method for the grid side’s converters is proposed，and then，three typical control modes are made to realize the optimal transmission of the active power，which is generated from the large-scale wind farms. Thus，the transmission efficiency of VSC-MTDC can be improved effectively. A 4-terminal VSC-HVDC model is carry out in MATLAB／Simulink to prove the proposed three control modes respectively. The simulation results show that the proposed control modes can achieve the coordination distribution of the active power，stabilize the DC voltage and improve the operation stability of the VSC-MTDC system. |
| Key words: VSC-MTDC offshore wind farm droop control active power distribution wind power grid-connection |
