基于同步相量的有源配电网自适应故障区段定位方法  

Adaptive Section Location Method for Active Distribution Network Based on Synchronized Phasor Measurement

作　　者：邢晓东 石访 张恒旭[1] 孙百聪 时志雄 Xing Xiaodong;Shi Fang;Zhang Hengxu;Sun Baicong;Shi Zhixiong(Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University,Jinan 250061 China;Electric Power Research Institute of State Grid Shanghai Municipal Electric Power Company,Shanghai 200233 China)

机构地区：[1]电网智能化调度与控制教育部重点实验室(山东大学),济南250061 [2]国网上海市电力公司电力科学研究院,上海200233

出　　处：《电工技术学报》2020年第23期4920-4930,共11页Transactions of China Electrotechnical Society

基　　金：国家重点研究发展计划项目(2017YFB0902800,2017YFB0902802);国家电网有限公司科技项目(52094017003D)资助。

摘　　要：分布式电源大量接入、网络拓扑结构和运行方式复杂多变,使得有源配电网故障诊断与定位面临新的挑战。同步相量测量单元(PMU)在配电网中的应用为故障处理提供了新的信息支撑。该文首先利用开关变位和PMU实时通信状态等信息,提出一种基于邻接子阵法的同步测量区段实时更新方案,可考虑配电网拓扑结构变化和PMU通信中断等场景;进而利用三相电压/电流同步相量数据,提出基于时空特征矩阵Frobenius范数的自适应短路故障区段定位算法;最后利用PSCAD软件搭建含分布式电源的IEEE 34节点系统,仿真验证所提出算法有效性。Due to the large number of distributed power access,complex network topology and changeable operation mode,fault diagnosis and location of active distribution network is facing new challenges.The application of phasor measurement units(PMU)in distribution network provides new information for fault diagnosis.In this paper,a real-time updating scheme of synchronous measurement section based on adjacency submatrix is proposed by using the information of the switch position and real-time communication status of PMU,which considers the change of distribution network topology and PMU communication failures.Meanwhile,based on the three-phase voltage and current synchronous phasor data,an adaptive short-circuit fault location algorithm based on the Frobenius norm of time-space characteristic matrix is proposed.Finally,the IEEE 34 node system with distributed generators is built in PSCAD,simulation result verifies the effectiveness of the proposed algorithm.

关 键 词：智能配电网 同步相量测量 网络拓扑 区段定位 短路故障 

分 类 号：TM771[电气工程—电力系统及自动化]