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基于改进遗传算法的配电网无功优化
引用本文:姚李孝,肖 靓,王 磊,李治买,王光立. 基于改进遗传算法的配电网无功优化[J]. 电网与水力发电进展, 2009, 25(4): 24-28
作者姓名:姚李孝  肖 靓  王 磊  李治买  王光立
作者单位:西安理工大学 电力工程系,西安 710048;西安理工大学 电力工程系,西安 710048;西安理工大学 电力工程系,西安 710048;陕西商洛供电局,陕西 商洛 726000;陕西商洛供电局,陕西 商洛 726000
摘    要:在传统无功优化模型的基础上,引入静态电压稳定裕度指标,建立了综合考虑系统有功网损最小、无功补偿容量最小和系统静态电压稳定裕度最大的配电网无功优化模型。根据节点无功2次电阻矩的大小,确定了待补偿节点以及各节点补偿容量的上下限。在基本遗传算法的基础上,对遗传操作进行了改进,提出了1种改进遗传算法。实例计算表明,采用该方法对配电网进行无功优化不仅可以降低有功网损,还能提高系统静态电压稳定性。

关 键 词:配电网  无功优化  遗传算法  电压稳定裕度

Reactive Power Optimization Based on Improved Genetic Algorithms in Distribution System
YAO Li-xiao,XIAO Liang,WANG Lei,LI Zhi-mai and WANG Guang-li. Reactive Power Optimization Based on Improved Genetic Algorithms in Distribution System[J]. Advance of Power System & Hydroelectric Engineering, 2009, 25(4): 24-28
Authors:YAO Li-xiao  XIAO Liang  WANG Lei  LI Zhi-mai  WANG Guang-li
Affiliation:YAO Li-xiao, XIAO Liang, WANG Lei, LI Zhi-mai,WANG Guang-li (1. Department of Electrical Engineering, Xi'an University of Teehnology, Xi'an 710048, Shaanxi Province,China; 2. Shangluo Power Supply Bureau, Shangluo 726000, Shaanxi Provinee, China)
Abstract:The reactive power optimization has profound significance to insure the safe and economic operation of power system. Based on the traditional reactive power model, A model of reactive power optimization in distribution system is established, which takes into account power loss minimization, reactive compensation capacity minimization and system static voltage stability margin maximization. Firstly, the nodes to be compensated and its compensation capacity limits are determined according to reactive secondary resistance moment. Then an improved genetic algorithms(IGA) is presented. The results show that the IGA can reduce network losses, and improve system static voltage stability.
Keywords:distribution system   reactive power optimization   genetic algorithms   voltage stability margin
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