对由机组 PT 一次保险故障引起的一起跳闸事件的分析

摘要

通过分析水布垭电厂的一次机组跳闸事件，从调速系统和励磁系统两个方面入手，对由机组PT一次侧保险故障引起的事故低油压和机组的过激磁保护动作信号作了详细的分析，并详述了事件发生后电厂对调速系统、励磁系统和机组出口PT所做的相关的完善、升级工作，对水电厂机组的安全稳定运行具有参考借鉴意义。%By means of analyzing a unit trip incident of Shuibuya Hydropower Plant , the low oil pressure accident signal caused by PT primary fuse failure and over-excitation protection action signal of unit is illustrated in detail from governor system and excitation system .The governor system , the excitation systems and the unit exit PT are improved and upgra-ded after tripping incident , which has reference and guidance for secure and stable operation of hydropower plant .