直流系统接地对保护控制及开关量输入回路的影响分析Analysis on Influence of DC System Grounding on Protection Control and Binary Input Circuit
聊方伦
LIAO Fang-lun(Anhui Anqing Wojoint Power Plant Co.
摘要(Abstract)：
通过举例对直流系统接地造成直流控制回路及保护装置开关量输入回路误动作的原因进行分析,探讨直流系统接地引起直流控制回路和开关量输入回路误动作的特点,提出了消除直流接地造成直流控制回路和保护装置开关量输入回路误动的方法。
Through the cause analysis on DC system grounding resulting in the misoperation of DC control circuit and protection device binary input circuit by examples,this paper discusses the characteristics of the misoperation and puts forward the method of eliminating the misoperation.
关键词(KeyWords)：
直流系统;接地;控制回路;继电器;误动
DC system;grounding;control circuit;relay;misoperation
基金项目(Foundation):
作者(Author):
聊方伦
LIAO Fang-lun(Anhui Anqing Wojoint Power Plant Co.
DOI: 10.19585/j.zjdl.2012.08.006