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电网技术  2014 

基于精简矩阵变换器的串联多端海上风电-HVDC系统协调控制

DOI: 10.13335/j.1000-3673.pst.2014.05.003, PP. 1143-1149

Keywords: 精简矩阵变换器,海上风电-HVDC,双极性空间矢量脉宽调制,串联多端,协调控制

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Abstract:

分析了精简矩阵变换器(reducedmatrixconverter,RMC)双极性空间矢量调制策略,提出了基于RMC高频链换流器的串联多端海上风电-HVDC系统拓扑结构及其协调控制策略。该控制策略由风电场监测控制(windfarmsupervisorycontrol,WFSC)、海上风电机组控制和网侧并网控制组成,并采用最优直流电流参考算法实现。在系统正常运行时,该控制策略可实现各风电机组独立最大风能跟踪(maximumpowerpointtracking,MPPT)控制、直流电流控制、并网有功和无功功率解耦控制;在风电机组故障和电网电压波动等情况下保证系统安全高效运行。仿真结果验证了所提拓扑及其控制策略的正确性和可行性。

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