摘要
分别对66 kV、220 kV、500 kV 3个电压等级的线路变压器组继电保护配置方案进行分析,确定最佳方案。66kV线路变压器组,只在线路电源端配置线路保护,并将距离保护的保护范围延伸至变压器高压侧;"站中站"模式的66 kV线路变压器组,不配置线路保护,将电缆线路作为变压器一部分;220 kV线路变压器组,配置线路纵联保护,不配置独立的断路器失灵保护;500 kV线路变压器组,配置线路纵联保护和独立的断路器保护。
This article analyses and compares the configuration scheme of 66 kV, 220 kV, 500 kV line-transformer-connection relayprotection, then determine the best solution. For 66 kV line-transformer-connection only in the allocation of power supply line protec-tion and extend the range of distance protection to high voltage of transformer. For 66 kV line-transformer-connection in the form of the＂station in the station＂, it is not configured line protection, but the cable line as part of the transformer. 220 kV line-transformer-con-nection is configured line longitudinal protection, but it is not configured independent circuit breaker failure protection. 500 kV line-transformer-connection is configured line longitudinal protection and independent circuit breaker protection.
作者
王长春
赵文刚
吕忠华
李宁
陈国龙
WANG Changchun ZHAO Wengang LU Zhonghua LI Ning CHEN Guolong(State Grid Liaoning Electric Power Company Limited Economic Research Institute, Shenyang, Liaoning 110015, China)
出处
《东北电力技术》
2017年第8期19-20,40,共3页
Northeast Electric Power Technology
关键词
线路变压器组
继电保护
优化配置
line-transformer-connection
relay protection
optimal configured
