考虑多负荷水平的中低压配电网无功补偿优化规划  

Optimal Reactive Power Compensation for Medium and Low Voltage Distribution Network Considering Multiple Load Levels

作　　者：胡泽春[1] 钟明明[1] 王佳贤[1] 葛长宏[1] 周前[2] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]江苏省电力试验研究院有限公司,南京211102

出　　处：《电工技术学报》2010年第8期167-173,共7页Transactions of China Electrotechnical Society

基　　金：教育部博士点新教师基金资助项目(200802481009)

摘　　要：建立了计及配电网中压和低压无功补偿优化规划的数学模型,提出了基于遗传算法的求解方法。所提模型和算法可处理多个负荷水平,同时优化补偿电容器的容量和分组数。为评估电容器在各负荷水平下的补偿效果,设计了补偿电容器投切模拟的流程。算法首先基于灵敏度分析和单位投资降损指标选择中压和低压待选补偿点,大大减小了搜索空间。算例分析表明了所提算法的有效性。A mathematical formulation considering both medium and low voltage optimal reactive power compensations is built for the distribution networks. A solution method based on genetic algorithm is then proposed. The formulation and the solution method can deal with multiple load levels. The capacitor sizes and their number of banks are optimized simultaneously. In order to evaluate configurations of the compensating capacitors,a procedure to simulate the switching on/off of each capacitor is designed. The candidate places for compensation are selected based on sensitivity analysis and the loss reduction index of per unit investment. The searching space of the proposed method is greatly reduced by choosing effective candidate places first. Numerical tests show the effectiveness of the proposed method.

关 键 词：配电网 无功规划 遗传算法 灵敏度分析 

分 类 号：TM761[电气工程—电力系统及自动化]