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特高压电网电磁环网开环方案优化决策

DOI: 10.13336/j.1003-6520.hve.2015.03.011, PP. 778-786

Keywords: 特高压电网,电磁环网,复杂网络理论,社团结构,层次分析法,模糊综合评价

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Abstract:

为避免和消除严重影响电网安全稳定的电磁环网结构,提出了一种分阶段进行的电磁环网开环方案优化决策方法。首先,根据枢纽站的分布情况和电网的结构特性,应用GN分裂算法将低电压等级电网划分为若干个分区,并按照各个分区被划分出来的顺序形成电磁环网的开环方案集合。然后,在综合考虑提高系统安全稳定性和限制短路电流关系的基础上,基于层次分析法建立了开环方案综合评价模型,应用模糊综合评价算法对各个开环方案进行定量评价。实际特高压电网仿真结果表明,该方法为形成电磁环网开环方案提供了理论依据,满足运行规划中离线计算的速度要求。通过对开环方案进行系统性优化决策,山东特高压电网划分成2个500kV分区,济南电网划分成3个220kV分区。

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