快速切除220kV变压器死区故障的继电保护方案研究  

Research on Relay Protection Scheme for Fast Removal of Dead Zone Fault of 220 kV Transformer

作　　者：孔令聘 KONG Lingpin(Inner Mongolia Guohua Hulunbeier Power Generation Co.,Ltd.,Hulunbeier,Inner Mongolia Autonomous Region,021025 China)

机构地区：[1]内蒙古国华呼伦贝尔发电有限公司,内蒙古呼伦贝尔021025

出　　处：《科技创新导报》2020年第36期8-10,共3页Science and Technology Innovation Herald

摘　　要：通过变压器电源侧后备保护动作,或者使用联跳变压器其他侧断路器相关方法,将220kV变压器某侧断路器以及变压器差动保护电流互感器(TA)存在的故障切除,通常情况下需要耗费大量时间;因为是一种出口故障,因此变压器损坏十分常见。快速切除220kV变压器死区故障继电保护技术是当下继电保护的一种新方法,得到了电力行业的广泛应用,该方法能够为电力系统的稳定运行提供保障,也能够有效预防死区出现故障等问题。基于此,本文对故障保护原理进行探讨,提出继电保护策略。It usually takes a lot of time to clear the faults of the circuit breaker at one side of the 220 kV transformer and the current transformer(TA)of the differential protection of the transformer through the backup protection action at the power supply side of the transformer or by using the relevant methods of the circuit breaker on the other side of the transformer,which usually takes a lot of time;because it is an export fault,the fault of the current transformer(TA)of the transformer differential protection is removed,Therefore,transformer damage is very common.Fast removal of 220kV Transformer dead zone fault relay protection technology is a new method of relay protection,has been widely used in the power industry,this method can provide security for the stable operation of the power system,but also can effectively prevent dead zone failure and other problems.Based on this,this paper discusses the fault protection principle and puts forward the relay protection strategy.

关 键 词：变压器死区 继电保护 快速切除 方案 

分 类 号：TM77[电气工程—电力系统及自动化]