一种发电机新型灭磁系统的方案及探讨  

A new type of de-excitation system for generator

作　　者：孙志久 干建丽 吴龙[2] SUN Zhijiu;GAN Jianli;WU Long(Zhe-jiang Zheneng Beihai Hydropower Co.,Ltd.)

机构地区：[1]浙江浙能北海水力发电有限公司,浙江杭州310000 [2]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《大坝与安全》2020年第3期57-60,共4页Dam & Safety

摘　　要：针对发电机组灭磁安全和快速性的需求分析,提出一种新灭磁系统的技术方案及灭磁过程控制原理,并分析发电机空载误强励故障及机端短路故障下发电机的灭磁过程,表明在保证安全和快速灭磁的前提下,新型灭磁技术方案可以降低灭磁开关弧压的要求,对大型发电机组的快速灭磁装置设计及研究具有一定指导意义。Based on the demand for safety and rapidity of de-excitation,this paper puts forward the tech⁃nical scheme and the control principle of de-excitation process of a new de-excitation system,and ana⁃lyzes the de-excitation process under no-load false forced excitation fault and short circuit fault at the end of the generator.It shows that the new technical scheme of de-excitation can reduce the arc voltage of the de-excitation breaker on the premise of ensuring the safety and rapidity.

关 键 词：发电机 磁场断路器 空载误强励 脉冲闭锁 

分 类 号：TV734[水利工程—水利水电工程]