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发输电经济及电网安全的综合优化建模方法

DOI: 10.13334/j.0258-8013.pcsee.2015.17.007, PP. 4335-4344

Keywords: 映射弹性势能,发电经济性,输电经济性,电网安全性,综合优化模型

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Abstract:

由于缺乏全程量化及单调的电网安全性指标,传统的经济发电优化模型中,一般将安全性作为不等式约束条件,无法同时对电网安全性进行优化。研究发现,电网的映射弹性势能不但可以作为电网安全性的定量指标,当线路阻抗比相差不大时,其变化还与主网的网损变化同趋,且在线路负载率均衡时趋于最小;将其纳入经济发电优化模型的目标函数,可解决发输电经济性和电网安全性综合优化的问题。IEEE39节点系统算例验证了该综合优化模型的适用性。研究对主网的运行与规划具有现实意义。

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