考虑配电网电压暂降治理经济性的DVR优化配置方法研究  

Optimal Configuration of DVRs Considering the Economy for Voltage Sag Mitigation in Distribution Networks

作　　者：李勇[1] 汤迪虎 吴艺松 黄明轩 艾聪林 LI Yong;TANG Dihu;WU Yisong;HUANG Mingxuan;AI Conglin(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007

出　　处：《电工技术》2024年第9期38-42,共5页Electric Engineering

基　　金：湖南省研究生科研创新项目资助(编号QL20230258)。

摘　　要：针对配电网电压暂降治理的有效性和经济性问题,提出一种动态电压恢复器经济配置的电压暂降治理方法。首先,对DVR不同容量时对应的投资成本进行分析,从而准确计算DVR配置方案的总投资。然后,基于电压暂降凹陷域,结合敏感负荷的中断概率对负荷进行经济损失评估,并根据系统有功损耗计算出总电压暂降经济损失成本。最后,构建了包含DVR装置的投资成本、电压暂降时敏感负荷经济损失和系统有功损耗三种要素的优化模型,实现DVR的最优容量和接入位置。采用IEEE 33节点标准测试系统为例对所提配置方法进行验证,仿真结果证明与传统的DVR就地接入的补偿方法相比,该方法能有效降低配电网电压暂降治理的总经济成本,在保证配电网的运行可靠性的同时提高经济效益。This paper addresses the effectiveness and economy issues of voltage sag mitigation in distribution networks by proposing an economically optimized configuration method for dynamic voltage restorers(DVRs).Initially,to accurately calculate total investment of DVR configuration scheme,the method analyzes the investment costs corresponding to different DVR capacities.Additionally,based on the voltage sag area of vulnerability and the interruption probability of sensitive equipment,an economic loss assessment of sensitive loads is conducted,and the total cost of voltage sag-induced economic loss is calculated according to the system′s active power loss.Ultimately,an optimization model encompassing three elements-investment cost of DVR device,economic loss of sensitive loads during voltage sag,and system′s active power loss-is constructed to determine optimal capacity and connection location of the DVR.The configuration method proposed in this paper is found by a case simulative verification on IEEE 33-node standard test system to effectively save total economic cost of voltage sag mitigation in distribution networks compared to the conventional compensation method of locally connecting the DVR,ensuring reliability of distribution network operation while improving economic benefits.

关 键 词：电压暂降 敏感负荷 凹陷域 动态电压恢复器 优化配置 

分 类 号：TM761[电气工程—电力系统及自动化]