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基于多馈入短路比的多直流落点选择方法

, PP. 36-42

Keywords: 电力系统,多馈入直流,多馈入短路比,落点选择,评价指标,电网规划

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Abstract:

为解决电网规划中多直流馈入系统直流落点选择的问题,基于CIGRE多馈入直流短路比(multi-infeedshortcircuitratio,MISCR)定义,从多角度提取多直流落点方案的信息,提出整体性、均衡性、干扰性和安全裕度4项评价指标,将其抽象为数学模型,并分析了4项评价指标的重叠性;在此基础上,采用二项系数加权法、相对比较法等建立了对应的多直流落点选择策略;最后,以某电网为例,采用所提方法评估了不同直流落点方案,比较分析了不同策略的差异和有效性,结果表明,采用相对比较法确定权重系数的多直流落点选择方法更符合实际需要;所提方法可方便地应用于对实际规划电网任意多直流落点方案的初步筛选。

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