摘要
远方跳闸保护在发变线组系统保护中,发挥着传统母线失灵保护作为电气设备主保护的近后备作用。本文以某电厂发变线组为例,简要分析系统发生各种短路故障,发变组和线路保护正确动作,断路器失灵拒动,通过远方跳闸保护使线路对侧开关快速跳闸,实现故障隔离。实际工程应用当中,以发变组的启动失灵保护中的"解除复压闭锁""启动失灵"接点作为专用远方跳闸保护的启动量,以断路器操作箱中三跳闭重TJR继电器的接点作为线路保护远跳功能的启动量,实现了远方跳闸保护的双重化配置。
In the system of generator-transformer-line band remote tripping play local back-up role of primary protection of electrical equipment when traditional bus failure protection when traditional bus protection fail.In this paper,it takes a power plant transformer-line group for example,which briefly analyses a variety of short-circuit fault in the system, the protections of transformer units and line acts correctly, circuit breaker fail to operate,through the remote tripping protection which trip the opposite switch of the circuit quickly to achieve fault isolation.Among the practical engineering application, ＂lift the pressure re-locking Start failure＂ of transformer unit start-failure protection serve as a contact to start the amount of dedicated remote tripping protection,The contact to 3-hop closure re-TJR relay in circuit breaker box serves as activating signal of line protection far jump function,and it realizes the dual configuration of the remote tripping protection.
出处
《河南电力》
2011年第2期25-27,共3页
Henan Electric Power
关键词
发变线组
远方跳闸保护
线路保护
光纤保护通道
分相电流差动
失灵保护
generator-transformer-line band
remote trip protection
line protection
fiber-optic relay protection channels
current differential protection in different phase
circuit breaker failure
