基于D-PMU的配电网故障选线和定位方法

邓丰; 李鹏; 曾祥君; 于力; 毛宇

doi:10.7500/AEPS20190927001

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基于D-PMU的配电网故障选线和定位方法

研制与开发 | 更新时间：2025-06-16

- 基于D-PMU的配电网故障选线和定位方法
- Fault Line Selection and Location Method Based on Synchrophasor Measurement Unit for Distribution Network
- 电力系统自动化-方正平台 2020年44卷第19期页码：160-167
- 作者机构：
  
  1.长沙理工大学电气与信息工程学院，湖南省长沙市 410114
  2.南方电网数字电网研究院有限公司，广东省广州市 510663
  3.南方电网科学研究院有限责任公司，广东省广州市 510663
- 作者简介：
  
  邓丰(1983—)，女，通信作者，博士，副教授，硕士生导师，主要研究方向：电力系统微机保护与故障定位等。 E-mail：df_csust@126.com
  李鹏(1973—)，男，博士，教授级高级工程师，主要研究方向：智能传感、透明电网、新能源与微电网等。E-mail：lipeng@csg.cn
  曾祥君(1972—)，男，教授，博士生导师，主要研究方向：电力系统微机保护与故障定位等。E-mail：eexjzeng@qq.com
- 基金信息：
  
  国家重点研发计划资助项目(2017YFB0902903);湖南省自然科学基金青年基金资助项目(2019JJ50660)
- DOI：10.7500/AEPS20190927001
  中图分类号：
- 收稿日期：2019-09-27，
  
  修回日期：2020-07-06，
  
  网络出版日期：2020-08-03，
  
  纸质出版日期：2020-10-10
- 稿件说明：
移动端阅览
邓丰,李鹏,曾祥君等.基于D-PMU的配电网故障选线和定位方法[J].电力系统自动化,2020,44(19):160-167.

DENG Feng,LI Peng,ZENG Xiangjun,et al.Fault Line Selection and Location Method Based on Synchrophasor Measurement Unit for Distribution Network[J].Automation of Electric Power Systems,2020,44(19):160-167.
邓丰,李鹏,曾祥君等.基于D-PMU的配电网故障选线和定位方法[J].电力系统自动化,2020,44(19):160-167. DOI： 10.7500/AEPS20190927001.

DENG Feng,LI Peng,ZENG Xiangjun,et al.Fault Line Selection and Location Method Based on Synchrophasor Measurement Unit for Distribution Network[J].Automation of Electric Power Systems,2020,44(19):160-167. DOI： 10.7500/AEPS20190927001.

摘要

配电网发生单相接地故障时，故障信号微弱且易受噪声干扰，准确选线和故障定位困难。为此，提出一种基于配电网同步相量测量装置(D-PMU)的故障选线和定位新方法。研制了D-PMU功能扩展模块——行波故障采集模块；搭建了配电网故障选线和定位系统；依据全网波头时差构建故障前、后时间特征矩阵，并引入最小二乘法模型以消除行波波头到达时刻标定误差。通过分析得出故障前、后时间特征矩阵中元素的变化规律，实现配电网故障选线和精确定位。仿真分析及现场试验结果表明，D-PMU现场运行稳定，所提方法不受线路参数和网络拓扑结构的影响且实用性强。

Abstract

Single-phase grounding fault signal in distribution network is weak and is susceptible to noise interference. Therefore

it is very difficult to accurately select fault lines and locate faults. Therefore

a new method of fault line selection and location based on synchrophasor measurement units for distribution network (D-PMU) is proposed. Firstly

the function expansion module of D-PMU

namely acquisition module of fault traveling wave， is developed. The fault line selection and location system of distribution network is built

and the time characteristic matrix before and after the fault is constructed according to the time difference of traveling wave front in the whole distribution network. The least square method model is introduced to eliminate the calibration error of arrival time of traveling wave front. The variation characteristics of elements in time characteristic matrix before and after fault are analyzed

and the fault line selection and precise location of distribution network are realized. Simulation analysis and field test results show that D-PMU runs stably in the field

and the proposed method is immune to the influence of line parameters and network topology and is highly practical.

关键词

Keywords

references

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