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电网技术  2014 

多风场连锁脱网过程分析与仿真研究

DOI: 10.13335/j.1000-3673.pst.2014.06.001, PP. 1425-1431

Keywords: 风电场,连锁脱网,电压控制,分布式仿真

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Abstract:

以仿真方式复现脱网事故扩散过程,并分析影响该过程的关键因素,为后续设计风场的无功电压控制策略提供支持。为此建立了包含主网和多个风场内部精细网络模型的两级分布式仿真平台,将风场间耦合关系与风场内多种元件动作特性一同纳入仿真,兼顾场内精细特征和场间相互作用。通过模拟不同控制模式下并联电容、风机、静止无功补偿器等设备动作过程,分析了受控制模式影响的连锁脱网发展过程。仿真结果表明,在集中式并网风电场群中,风场间电气耦合紧密,单个风场有功、无功变化对邻近风场接入点电压影响显著。研究结果进一步验证了实现风场内多种无功设备协调控制的重要性。

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