高密度分布式配电网单相接地故障区间定位方法研究  

Research on the location method of single phase to ground fault in high density distributed distribution network

作　　者：岑荣佳 史纯清 赵世钦 CEN Rong-jia;SHI Chun-qing;ZHAO Shi-qin(Duyun Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Duyun 558000,China)

机构地区：[1]贵州电网有限责任公司都匀供电局,贵州都匀558000

出　　处：《电子设计工程》2020年第15期148-151,156,共5页Electronic Design Engineering

摘　　要：现有的高密度分布式配电网单相接地故障区间定位方法,存在着定位时间过长的缺陷。为了解决上述问题,提出高密度分布式配电网单相接地故障区间定位方法。为了精确的定位配电网单相接地故障区间,构建配电网零序等效模型;采用聚类算法提取单相接地故障特征,利用分析方法计算单相接地故障相电流增量,得到单相接地故障相电流增量规律;搭建故障最大区间T型结构,划分潜在故障区间;通过S变换精确定位单相接地故障区间,实现了高密度分布式配电网单相接地故障区间的定位。通过实验结果表明:与现有的高密度分布式配电网单相接地故障区间定位方法相比较,提出的高密度分布式配电网单相接地故障区间定位方法极大的降低了定位时间,充分说明提出的高密度分布式配电网单相接地故障区间定位方法具备更好的定位效果。The existing high-density distributed distribution network single-phase ground fault interval location method has the disadvantage of too long positioning time.In order to solve the above problems,a single-phase ground fault interval location method for high-density distributed distribution network is proposed.In order to accurately locate the single-phase ground fault interval of distribution network,construct zero-order equivalent model of distribution network.The clustering algorithm is used to extract the single-phase ground fault characteristics,and the single-phase ground fault phase current increment is calculated by the analysis method to obtain the single-phase ground fault phase current increment law.Build a fault-maximum interval T-shaped structure and divide the potential fault interval.The S-transformation is used to accurately locate the single-phase ground fault interval,and the localization of the single-phase ground fault interval of the high-density distributed distribution network is realized.The experimental results show that compared with the existing high-density distributed distribution network single-phase ground fault interval location method,the proposed high-density distributed distribution network single-phase ground fault interval location method greatly reduces the positioning time.It is fully explained that the proposed single-phase ground fault interval location method for high-density distributed distribution network has better positioning effect.

关 键 词：高密度分布式配电网 单相接地故障 区间 定位 

分 类 号：TN108.7[电子电信—物理电子学]