引用本文:郭利爽,李凤婷,赵新利,等.基于子网络划分的含DG配电网故障区段定位[J].电力系统保护与控制,2020,48(7):76-84.
GUO Lishuang,LI Fengting,ZHAO Xinli,et al.Fault section location for distribution network with DG based on sub-network partition[J].Power System Protection and Control,2020,48(7):76-84
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基于子网络划分的含DG配电网故障区段定位
郭利爽1,李凤婷1,赵新利2,周嘉阳3
(1.新疆大学电气工程学院，新疆 乌鲁木齐 830047;2.新疆兵电能源研究院股份有限公司， 新疆 乌鲁木齐 830026;3.国网江西电力有限公司吉安供电公司，江西 吉安 343009)
摘要:
针对含分布式电源配电网的故障区段定位困难的问题，提出一种基于子网络划分的配电网故障区段定位算法。该算法分为三步:第一步构建配电网的拓扑网络描述矩阵；第二步将结构复杂的配电网划分为多个子网络，并获取各子网络的方向性描述矩阵和故障信息向量，进而建立故障定位判别矩阵；第三步根据判别矩阵进行故障定位。案例分析了配电网发生单一故障、故障路径部分重叠及故障路径完全重叠的多重故障时的适应性，结果表明了所提算法的有效性。
关键词:  含DG配电网  子网络划分  矩阵算法  故障区段定位
DOI：10.19783/j.cnki.pspc.190587
分类号:
基金项目:国家自然科学基金项目资助(51767023)
Fault section location for distribution network with DG based on sub-network partition
GUO Lishuang1,LI Fengting1,ZHAO Xinli2,ZHOU Jiayang3
(1. College of Electrical Engineering, Xinjiang University, Urumqi 830047, China;2. Xinjiang Military Power Research Institute Co., Ltd., Urumqi 830026, China;3. Ji'an Power Supply Company, State Grid Jiangxi Electric Power Company, Ji'an 343009, China)
Abstract:
It is difficult to locate fault section of distribution network with distributed generation. Aiming at this problem, a fault location algorithm based on sub-network partition is proposed. The algorithm works in three stages:in the first stage, it constructs the topological network description matrix of distribution network; in the second stage, it divides the complex distribution network into several sub-networks, then obtains the directional description matrix and fault information vector of each sub-network, furthermore, establishes the fault location discrimination matrix; in the last stage, it locates the fault section according to the discrimination matrix. The adaptability of a single point fault, fault paths partial and complete overlap of multipoint faults in distribution network is analyzed by case study. The results show the effectiveness of the proposed algorithm. This work is supported by National Natural Science Foundation of China (No.51767023).
Key words:  distribution network with DG  sub-network partition  matrix algorithm  fault section location
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