考虑过渡电阻补偿的注入式定子接地保护试验优化  

Experimental Optimization of Injection Type Stator Grounding Protection Considering Transition Resistance Compensation

作　　者：周靖 郑梦阳 贺倾城 ZHOU Jing;ZHENG Mengyang;HE Qingcheng(Xinanjiang Hydropower Plant of State Grid Xinyuan Hydropower Co.Ltd.,Hangzhou 311608,China;Guodian NARI Technology Co.Ltd.,Nanjing 211100,China)

机构地区：[1]国网新源集团有限公司新安江水力发电厂,浙江省杭州市311608 [2]国电南瑞科技股份有限公司,江苏省南京市211100

出　　处：《水电与抽水蓄能》2025年第1期109-114,共6页Hydropower and Pumped Storage

基　　金：中央高校基本科研业务费资助项目“复杂情况下无人机-无人车异构集群任务分配与轨迹规划的一体化设计”(B230201055)。

摘　　要：为提升20Hz注入式定子接地保护的测量精度,结合注入源原理、保护判据以及保护逻辑,总结影响20Hz注入式定子接地保护过渡电阻值测量精度的原因,给出提升保护测量精度的方法,并设计20Hz注入式定子接地保护的现场补偿方案。以某发电机组保护装置为例,验证了补偿实验的可行性及优越性。To improve the measurement accuracy of 20Hz injection type stator grounding protection,combined with the principle of injection source,protection criteria,and protection logic,this paper summarizes the reasons that affect the measurement accuracy of the transition resistance value of 20Hz injection type stator grounding protection,provides methods to improve the measurement accuracy of protection,and designs a on-site compensation scheme for 20Hz injection type stator grounding protection.Taking the protection device of a certain generator set as an example,the feasibility and superiority of the compensation experiment were verified.

关 键 词：过渡电阻 注入式 定子接地保护 保护灵敏度 

分 类 号：TM862[电气工程—高电压与绝缘技术]