中国电机工程学报Issue(1)：103-111,9.DOI:10.13334/j.0258-8013.pcsee.2015.01.013
基于多重判据的电压暂降故障源定位方法
Multiple Criterions Based Voltage Sag Location Method
刘颖英 1王同勋 1冯丹丹 1丁宁 1周胜军1
作者信息
- 1. 国网智能电网研究院，北京市昌平区 102211
- 折叠
摘要
Abstract
The main cause of voltage sag is short-circuit fault in power grid. Accurate positioning of voltage sag fault source locations can not only help distinguish responsibilities between power utilities and users, but also shorten fault clearing time and improve power supply reliability. A voltage sag fault source location method based on multiple criteria was proposed. The arrangement strategy of power quality monitors’ setting was carried out. Then the possible fault lines were identified based on the monitor observation range and voltage sag source locations. The fault type of possible fault line was identified according to the measured node’s voltage phasors. The voltage values at the monitoring nodes were calculated based on the distance distribution functions, which were determined by the virtual fault points on the possible fault lines. The possible ranking results of the virtual fault points were determined by the errors between the calculated and measured voltage values at the monitoring nodes. The efficiency and practicability of the proposed method were verified based on the simulations of 10-bus and 26-bus power grids. The proposed method can diminish the circulation searching process and identify the false fault points.关键词
电压暂降/故障定位/多重判据/故障类型估计/电能质量Key words
voltage sag/fault location/multiple criterions/fault type estimation/power quality分类
信息技术与安全科学引用本文复制引用
刘颖英,王同勋,冯丹丹,丁宁,周胜军..基于多重判据的电压暂降故障源定位方法[J].中国电机工程学报,2015,(1):103-111,9.
