分布式电力系统故障区间自动定位方法  

Automatic Positioning Method of Fault Interval of Distributed Power System

作　　者：姜朝 JIANG Zhao(Sanyuan County Power Supply Branch of State Grid Shaanxi Electric Power Co.,Ltd.,Sanyuan,Shaanxi 713800,China)

机构地区：[1]国网陕西省电力有限公司三原县供电分公司,陕西三原713800

出　　处：《自动化应用》2023年第24期84-86,共3页Automation Application

摘　　要：常规的电力系统故障定位方法以故障测距为主,多条分支路增加了测距模型定位故障的误差,影响了电力系统故障定位的精准度,为此,本文设计了分布式电力系统故障区间自动定位方法。划分分布式电力系统孤岛区间,搜索孤岛范围内的一级负荷,并以负荷优先原则划入孤岛内,未被划分到孤岛内的区间即为故障区间。定位分布式电力系统故障区间相位差,在故障区间内采集突变点前后3个周波的相位数据,根据相位差变化的幅度,判断该区域是否为故障区间。对比实验验证该方法的定位精准度更高,能够应用于实际生活。The conventional fault positioning method of power system is mainly fault ranging,and several branch roads increase the error of fault positioning of ranging model,which affects the accuracy of fault positioning of power system.Therefore,the automatic positioning method of fault interval of distributed power system is designed.Divide the island interval of distributed power system,search the first level load within the range of the island,and delimit the island with the principle of load priority.The interval not divided into the island is the fault interval.Locate the phase difference of the fault interval of the distributed power system,collect the phase data of the three weekly waves before and after the mutation point in the fault interval,and judge whether the area is the fault interval according to the amplitude of the phase difference change.The comparative experiment proves that the method has higher positioning accuracy and can be applied in real life.

关 键 词：分布式电力系统 故障区间 自动定位方法 

分 类 号：TM726[电气工程—电力系统及自动化]