考虑配电网三相不平衡性的台区降损方法研究  

Research on Loss Reduction Method of Station Area Considering Three-Phase Unbalance of Distribution Network

作　　者：胡文 骆凯波 万树伟 钟爱 叶大勇 HU Wen;LUO Kaibo;WAN Shuwei;ZHONG Ai;YE Dayong(Marketing Service Center,State Grid Chongqing Electric Power Company,Chongqing 400000,China;Beijing Zhongdian Puhua Information Technology Co.,Ltd.,Beijing 100192,China)

机构地区：[1]国网重庆电力公司营销服务中心,重庆400000 [2]北京中电普华信息技术有限公司,北京100192

出　　处：《自动化仪表》2024年第5期40-44,共5页Process Automation Instrumentation

摘　　要：目前,台区损耗的影响因素较多,存在三相电流差异大、线路损耗和功率损耗高的三相不平衡问题。为了提高配电台区的供电质量,提出考虑配电网三相不平衡性的台区降损方法。分析了三相不平衡对台区损耗产生的影响。在分析结果的基础上,将最小化三相电流在台区中的不平衡度、控制自动换相装置、在台区运行过程中调整开关次数最小作为优化目标。通过建立台区降损优化目标函数和采用遗传算法求解目标函数,获得台区降损优化目标函数的最优解。通过调整三相不平衡,完成台区的降损优化。试验结果表明,采用所提方法优化后,三相电流的值基本相符,且线路损耗、功率损耗减小。该方法有效降低了台区损耗。At present,there are more influencing factors of station area loss,and there are three-phase imbalance problems with large differences in three-phase currents,high line loss and power loss.To improve the power supply quality of distribution station area,a loss reduction method of station area considering three-phase unbalance of distribution network is proposed.The impact of three-phase unbalance on the loss of the station area is analyzed.Based on the analysis results,minimizing the unbalance of threephase currents in the station area,controlling the automatic phase changing device,and adjusting the minimum number of switches during the operation of the station area are taken as the optimization objectives.The optimal solution of the optimization objective function of loss reduction in the station area is obtained by establishing the objective function of loss reduction in the station area and solving the objective function using genetic algorithm.By adjusting the three-phase imbalance,the loss reduction optimization of the station area is completed.The test results show that after optimization with the proposed method,the values of three-phase currents basically match,and the line loss and power loss are reduced.This method effectively reduces the loss of the station area.

关 键 词：三相不平衡 优化改造 遗传算法 台区损耗 目标函数 开关次数 适应度函数 二进制编码 

分 类 号：TH-39[机械工程]