摘要
为了提高含分布式电源配电网系统的故障检测能力,在分析三段过流保护原理的基础上,设计了整定电流段保护参数计算方法,并展开了仿真分析。研究结果表明:文中设计的故障识别算法能够精确测定双侧电源线路,此时不需要利用方向元件埃判断故障发生的方向,可以有效防止线路潮流方向产生的影响,采用本文算法可以实现对故障的精确测定。A线路出现单相接地问题的情况下,通过继电器Rbl测试得到的电流以及相位曲线。对应于A相与B相出现接地故障的情况下通过继电器Rbl测试形成的电流以及相位曲线。在A相、B相、C相都出现接地故障的情况下通过继电器Rbl测试得到的电流与相位曲线。
In order to improve the fault detection ability of power distribution network with distributed supplies,based on the analysis of the three-stage overcurrent protection principle,a calculation method of the protection parameters of the current section is designed,and the simulation analysis is carried out.The results show that the fault identification algorithm designed can accurately determine the two sides of the power supply circuit,and it is not necessary to use the direction component Angstrom to determine the direction of the fault.The method can effectively prevent the influence of the power flow direction of the circuit,and the fault can be accurately determined by using the algorithm.In the case of single-phase grounding problem in line A,the current and phase curve can be obtained by Rbl test of relay.The current and phase curve can be formed correspondingly by relay Rbl test in the case of grounding fault between phase A and phase B.The current and phase curves can also be obtained by relay Rbl test in the case of ground fault in phase A,phase B and phase C.
作者
汪剑波
李志超
程序
杨宏伟
钱叶牛
WANG Jianbo;LI Zhichao;CHENG Xu;YANG Hongwei;QIAN Yeniu(State Grid Beijing Electric Power Company,Beijing 100031,China)
出处
《微型电脑应用》
2021年第1期96-98,共3页
Microcomputer Applications
关键词
分布式电源
配电网
故障
快速识别
RTDS仿真
distributed power supply
distribution network
fault
fast recognition
RTDS simulation
作者简介
汪剑波(1984-),男,硕士,高级工程师,研究方向:城市配电网建设和运维、智能配电网等;李志超(1991-),男,硕士,助理工程师,研究方向:高电压技术、电气设备在线监测等;程序(1981-),男,硕士,教授级高工,研究方向:配电网建设和运维等;杨宏伟(1983-),男,硕士,工程师,研究方向:配电网建设和运维等;钱叶牛(1985-),男,硕士,高级工程师,主要研究方向:配电站室、自动化运维、检修等。
