电气化铁路对微机保护装置选相元件的影响研究

刘源; 于群; 薛劲莹; 罗邦云; 李琰; 彭东虎; 国翠

引用本文:	刘源,于群,薛劲莹,等.电气化铁路对微机保护装置选相元件的影响研究[J].电力系统保护与控制,2014,42(16):127-132.
	LIU Yuan,YU Qun,XUE Jing-ying,et al.Research of the electrified railway influence on the phase selector in digital protection[J].Power System Protection and Control,2014,42(16):127-132

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电气化铁路对微机保护装置选相元件的影响研究
刘源¹, 于群¹, 薛劲莹², 罗邦云², 李琰³, 彭东虎¹, 国翠¹
1.山东科技大学电气与自动化工程学院, 山东青岛 266590;2.新疆哈密电业局，新疆哈密 839000;3.中国电力科学研究院，北京 100192

摘要:

研究了电气化铁路对电力系统220 kV输电线路微机保护装置选相元件的影响。根据某地区电网实际参数，在PSCAD中分别搭建了电力机车模型，基于相电流差突变量和序分量原理的微机保护装置选相元件模型。在PSCAD仿真中，相电流差突变量选相元件在不同工况下均能正确选出故障相，序分量选相元件在电铁功率较大时不能正确选出故障相，故电气化铁路对相电流差突变量选相元件影响较小，为在电气化铁路运输任务较重地区装设选相元件提供了理论依据。

关键词: 电气化铁路微机保护 PSCAD 序分量选相突变量选相

DOI：10.7667/j.issn.1674-3415.2014.16.022

分类号:

基金项目:

Research of the electrified railway influence on the phase selector in digital protection

LIU Yuan¹, YU Qun¹, XUE Jing-ying², LUO Bang-yun², LI Yan³, PENG Dong-hu¹, GUO Cui¹

1.College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China;2.Xinjiang Hami Electric Power Bureau, Hami 839000, China;3.China Electric Power Research Institute, Beijing 100192, China

Abstract:

This paper researches the influence of electrified railway on phase selector of digital protection device of 220 kV power transmission line in power system. According to the actual parameters of a regional power system, the electric locomotive model, the phase current difference superimposed phase selector model and the sequence component phase selector model are built in PSCAD. In PSCAD simulation, the phase current difference superimposed phase selector model can correctly select the fault phase in different conditions and the sequence component phase selector model can’t select the fault phase when the electric railway power is larger, so this paper reaches the conclusion that electrified railway on the phase current difference superimposed phase selector has little effect. It provides principle for installation the phase selection element in the electric railway transportation of heavy task area.

Key words: electrified railway digital protection PSCAD sequence components phase selector current sudden changer phase selector

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