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电网技术  2014 

大型互联电网可用输电能力分解计算法

DOI: 10.13335/j.1000-3673.pst.2014.01.022, PP. 138-145

Keywords: 可用输电能力,大型互联电网,分解,Ward等值

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Abstract:

中国区域电网间能源分布不均衡,需要将大型能源基地的电能进行大容量远距离传输,因此,计算大型互联电网可用输电能力(availabletransfercapability,ATC)十分必要。然而,由于完整数据收集较为困难,大型互联电网的ATC无法直接计算。针对上述问题,提出一种大型互联电网ATC的分解计算法。其基本原理是按照自然分区,将大型互联电网划分为若干可直接计算出ATC的子系统,然后,根据子系统间的串联或并联关系,基于已得到子系统的ATC间接计算大型互联电网的ATC。分别建立了串、并联确定性ATC与概率性ATC的计算模型;在计算子系统ATC时,运用了Ward等值思想对其余系统进行等效,可有效处理子系统间复杂连接的情况。算例结果验证了所提计算原理的正确性和计算方法的可行性。

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