水轮发电机停机过程中直流接地故障的分析与处理  

Analysis and Handling of DC Grounding Fault During Shutdown of Hydroelectric Generator

作　　者：陈政 曹龙伟 林义 李希飞 CHEN Zheng;CAO Longwei;LIN Yi;LI Xifei

机构地区：[1]国网新源集团有限公司富春江水力发电厂,浙江桐庐311504

出　　处：《电力系统装备》2025年第1期97-99,共3页Electric Power System Equipment

摘　　要：直流系统是为发电厂内的控制信号、继电保护、自动装置、断路器跳合闸操作回路等提供可靠的直流电源.直流系统可靠与否对发电厂的安全运行至关重要.文章分析了一起常规水电机组停机过程中发生的直流接地故障的原因,提出了相应的改进及处理措施,以期为相关人员提供参考.The DC system provides reliable DC power for control signals,relay protection,automatic devices,circuit breaker tripping and closing operation circuits,etc.in the power plant.The reliability of the DC system is crucial for the safe operation of power plants.The article analyzes the cause of a DC grounding fault that occurred during the shutdown process of a conventional hydroelectric unit,and proposes corresponding improvement and handling measures,in order to provide reference for relevant personnel.

关 键 词：直流系统 绝缘接地 水电厂 机组启停 

分 类 号：TV734[水利工程—水利水电工程]