Modeling and simulation of multi-terminal HVDC for wind power delivery
Modeling and simulation of multi-terminal HVDC for wind power delivery
复制标题
风电多端高压直流输电建模与仿真
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Zhixin Miao
中科院分区：
文献类型：
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作者：
Ling Xu;Lingling Fan;Zhixin Miao
VSC-HVDC系统以其灵活的控制能力和多端拓扑结构被越来越多地采用。海上风电场正在成为许多国家风电的首选解决方案。海上风电场与电网的整合对于高效的电力输送至关重要，因为通过长距离水下输电可能会带来高百分比的电力损失等问题。多端VSC-HVDC系统具有控制能力灵活、直流电缆损耗低等优点，是海上风电并网的理想选择。本文的工作主要有两方面的贡献：(1)建立了DFIG风电机组和多端VSC-HVDC系统的详细模型并进行了试验；(2)研究了DFIG风电机组的正常运行和电网侧接地故障，提出了一种降低故障时过电压的方法并进行了试验。利用MatLab/SimPowerSystem开发了模型和仿真，并进行了测试。
VSC-HVDC system is adopted more and more for its flexible control capability and multi-terminal topology. Offshore wind farms are becoming a preferred solution for wind power in many countries. The integration of offshore wind farms to grid is critical for efficient power delivery, since the transmission via long distance underwater could be a problem such as high percent power loss. The Multi-Terminal VSC-HVDC system is a suitable choice to integrate the offshore wind power with grid due to its advantages, such as flexible control capability and low power loss via DC cables. The contribution of this work is twofold: (i) detailed models of DFIG wind generators and MultiTerminal VSC-HVDC system are built and tested, and (ii) both normal operations and grid side ground fault are studied, and an approach to mitigate the over-voltage during fault is proposed and tested. The models and simulations are developed and tested via Matlab/SimPowerSystem.