发电机转子接地报警原因分析及智能接地保护探讨  

Analysis of the Causes of Generator Rotor Grounding Alarm and Exploration of Intelligent Grounding Protection

作　　者：沈晓晖 尹航 孙浩 Shen Xiaohui;Yin Hang;Sun Hao(CNNC Nuclear Power Operation and Management Co.,Ltd,Jiaxing 314300,China)

机构地区：[1]中核核电运行管理有限公司,嘉兴314300

出　　处：《智能建筑电气技术》2023年第4期43-47,共5页Electrical Technology of Intelligent Buildings

摘　　要：发电机转子一点接地是汽轮发电机常见故障之一,严重影响机组和系统的安全。本文结合某650MW三机无刷励磁系统,介绍了智能发电机转子接地保护装置的结构及原理,分析了一起运行中发电机转子接地报警的现象及处理方法,便于同类型机组有序排查发电机转子接地保护动作,为现场运行维护工作提供借鉴指导,具有一定的参考意义。One point grounding of generator rotor is one of the common faults of turbine generators,which seriously affects the safety of the unit and system.This paper introduces the structure and principle of intelligent generator rotor grounding protection device in combination with a 650MW three-machine brushless excitation system,analyzes the phenomenon of generator rotor grounding alarm in operation and the handling method,facilitates the orderly troubleshooting of generator rotor grounding protection action in the same type of units,and provides reference guidance for on-site operation and maintenance work,which has certain reference significance.

关 键 词：三机无刷 励磁系统 发电机转子 一点接地 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]