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电网技术  2015 

计及FACTS校正控制策略的电网静态安全风险评估

DOI: 10.13335/j.1000-3673.pst.2015.09.029, PP. 2565-2570

Keywords: 柔性交流输电,风险评估,校正控制,静态安全

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Abstract:

为解决传统校正控制机组响应慢的问题,文章采用柔性交流输电系统元件(flexibleACtransmissionsystems,FACTS)对事故后潮流进行控制,并研究了FACTS设备对电网静态安全风险水平的影响。以事故后线路过载和节点低电压水平为严重度函数,建立了量化的运行风险评估指标;采用灵敏度分析方法,根据电网静态安全风险对FACTS控制变量的灵敏度指标确定了FACTS设备的最优安装位置;基于功率注入模型,提出一种计及FACTS的事故后潮流快速校正控制模型,并将其应用到电网静态安全风险评估算法中,以消除因设备故障造成的线路功率紧急过载和节点低电压的情况。IEEERTS79测试系统算例分析表明,所提出的方法能缓解事故后潮流紧急过载和节点低电压情况,并有效降低系统的静态安全风险水平。

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