全球能源互联网（英文）2021，Vol.4Issue(6)：543-553,11.DOI:10.14171/j.2096-5117.gei.2021.06.002
含逆变型分布式电源花瓣式配电网的故障定位方法
Fault location method for petal-shaped distribution network with inverter-interfaced distributed generators
摘要
Abstract
In this paper, a fault location method for the petal-shaped distribution network (PSDN) with inverter-interfaced distributed generators (IIDGs) is proposed to shorten the time of manual inspection. In order to calculate the fault position, the closed-loop structure of the PSDN is skillfully exploited, and the common control strategies of ⅡDGs are considered. For asymmetrical faults, a fault line identification formula based on the negative-sequence current phase differences is presented, and a fault location formula only utilizing the negative-sequence current amplitudes is derived to calculated the fault position. For symmetrical faults, the positive-sequence current at both ends of lines and the current output from ⅡDGs are used to identify the fault line, and the positive-sequence current on multiple lines are used to pinpoint the fault position. In this method, corresponding current phasors are separated into amplitudes and phases to satisfy the limitation of communication level. The simulation results show that the error is generally less than 1％, and the accuracy of the proposed method is not affected by the fault type, fault position, fault resistance, load current, and the ⅡDG penetration.关键词
花瓣式配电网/逆变型分布式电源/故障特性分析/故障定位Key words
Petal-shaped distribution network/Inverter-interfaced distributed generator/Fault-location method/Fault characteristic analysis引用本文复制引用
陈晓龙,袁姝,李永丽,李仲青,曾治安,耿少博..含逆变型分布式电源花瓣式配电网的故障定位方法[J].全球能源互联网（英文）,2021,4(6):543-553,11.基金项目
This work was supported by State Grid Science and Technology Project:Research on Key Protection Technologies for New-type Urban Distribution Network with Controllable Sources and Loads(5100-201913019A-0-0-00). （5100-201913019A-0-0-00）
