励磁限制与发变组保护的配合原则及实例分析  

Cooperation Principle and Case Analysis of Excitation Limit and Generatortransformer Protection

作　　者：沈晓晖 SHEN Xiaohui(CNNP Nuclear Power Operations Management Co.,Ltd.,Jiaxing 314300)

机构地区：[1]中核核电运行管理有限公司,浙江嘉兴314300

出　　处：《电力安全技术》2023年第12期30-35,共6页Electric Safety Technology

摘　　要：励磁系统是同步发电机的重要组成部分,也是系统稳定运行的保障。为避免意外停机或保护不足导致设备损坏,系统失稳,发变组保护与励磁系统之间存在很多方面的协调,是网源协调的重要内容。以某650 MW机组为例,对励磁限制与发变组保护相关参数的整定计算、配合校验进行简要分析。结果表明,该机组中的励磁系统与发电机组保护定值设置合理,能实现两者间的配合,并留有一定的时间级差,确保励磁系统限制功能先于发变组保护动作,满足网源协调要求。Excitation system is an important component of synchronous generator,and it is also the guarantee for the stability of the whole system.In order to avoid equipment damage and system instability caused by unexpected shutdown or insufficient protection,many aspects need coordination between generatortransformer protection and excitation system,which is an important part of generation-transmission coordination.Taking a 650 MW nuclear power unit as an example,a brief analysis is carried out on the setting calculation and verification coordination of parameters related to excitation limit and generator-transformer protection.The results demonstrate that the settings of the excitation system and the generator-transformer group of the unit are reasonable,both of which do well in cooperation,and keep a certain time difference to ensure that the limit function of the excitation system is prior to the protection action of the generator-transformer group and meet the requirements of generation-transmission coordination.

关 键 词：网源协调 励磁调节器 励磁限制 发变组保护 配合 

分 类 号：TM331[电气工程—电机]