基于计算电流相量的架空线路断线故障识别方法A Breakage Fault Identification Method of Overhead Lines Based on Calculated Current Phasor
卢正飞,张晓宇,黄福全,朱可凡,刘子俊,文明浩
LU Zhengfei,ZHANG Xiaoyu,HUANG Fuquan,ZHU Kefan,LIU Zijun,WEN Minghao
摘要(Abstract)：
城市电网的架空线路与交通网络、人员密集区域交叉跨越较多,断线故障易造成人员伤亡,因此提出了一种断线故障识别方法,实现高压架空输电线路断线故障的快速切除。所提方法利用线路两端电压信息和线路参数,根据线路模型关系计算电流相量,利用实测电流信息得到实测电流相量。在无内部故障时,计算电流相量与实测电流相量一致;线路内部故障时,两者存在较大差异。利用这一特征构造了电流比例判据,实现了断线故障的可靠识别和快速切除。最后,在PSCAD/EMTDC平台上对所提方法进行了仿真验证。
The overhead lines of urban power grids cross traffic networks and densely populated areas. in the case of breakage fault, it may cause casualties. Therefore, a breakage fault identification method is proposed to enable breakage fault clearing. The proposed method uses the voltage information at both ends of the line and line parameters "calculate current phasor" according to the "measured current phasor" by the measured current information. In the absence of internal fault, the calculated current phasor is consistent with the measured current phasor; when an internal fault occurs, there is a significant difference between both phasors.Using this feature, the current ratio criterion is constructed to realize reliable identification and fast clearing of the breakage line. Finally, the proposed method is verified in PSCAD/EMTDC platform.
关键词(KeyWords)：
架空线路;断线故障;继电保护;电流相量
overhead line;line breakage fault;relay protection;current phasor
基金项目(Foundation): 中国南方电网有限责任公司科技项目(090000KK52170005)
作者(Author):
卢正飞,张晓宇,黄福全,朱可凡,刘子俊,文明浩
LU Zhengfei,ZHANG Xiaoyu,HUANG Fuquan,ZHU Kefan,LIU Zijun,WEN Minghao
DOI: 10.19585/j.zjdl.201812009
参考文献(References)：
- [1]尹项根,曾克娥.电力系统继电保护原理与应用[M].武汉:华中科技大学出版社,2001.
- [2]何仰赞,温增银.电力系统分析(上册)[M].武汉:华中科技大学出版社,2002.
- [3]林福昌.高电压工程[M].3版.北京:中国电力出版社,2016.
- [4]LAZKANO A,RUIZ J,ARAMENDI E,et al.Study of high impedance fault detection in Levante area in Spain[C].International Conference on Harmonics and Quality of Power,2000.Proceedings.IEEE,2000,3:1011-1016.
- [5]赵青春,谢华,陆金凤,等.基于两侧零序功率方向的输电线路断线区域判别方法:201611119546.4[P].2017-04-26.
- [6]马力,郭伟伟.一种识别线路单相或者两相断线的继电保护方法:201610892866.7[P].2017-01-04.
- [7]GARCOA-SANTANDER L,BASTARD P,PETIT M,et al.Down-conductor fault detection and location via a voltage based method for radial distribution networks[J].IEE Proceedings-Generation,Transmission and Distribution,2005,152(2):180-184.
- [8]张加贝,陈汝昌,王帮灿.220 kV线路单相断线故障分析与处理[J].云南电力技术,2014,42(6):117-120.
- [9]彭建宁,魏莉.110 kV输电线路单相断线故障分析[J].电力系统保护与控制,2007,35(18):75-77.
- [10]阳家书,李国友,孙建华.一次110 kV线路单相断线故障的继电保护动作分析[J].电力系统保护与控制,2007,35(22):58-60.
- [11]刘亚新.500 kV神侯Ⅰ回断线故障分析[J].电力设备,2005,6(10):44-45.
- [12]盛方正,陈福良,范秉翰,等.小电阻接地系统单相断线故障分析及对策研究[J].浙江电力,2011,30(7):6-9.
- [13]朱玲玲,张华中,王正刚,等.基于小波神经网络单相断线故障选线和定位[J].电力系统保护与控制,2011,39(4):12-17.
- [14]PONGTHAVORNSAWAD A,RUNGSEEVIJITPRAPA W.Broken Conductor Detection for Overhead Line Distribution System[C].Power and Energy Engineering Conference.IEEE,2011:1-4.