基于一起保护误动事故的继电保护二次回路分析

Analysis of Relay Protection Secondary Circuit Based on Its Misoperation Accident

目前二次回路缺陷是导致继电保护误动作的主要原因之一。本文以华能宁夏大坝发电有限责任公司一起发电机保护误动事故为例,对继电保护二次回路存在的缺陷进行了分析,并提出了整改措施。分析结果对提高继电保护的动作正确率有着积极的作用。

Secondary circuit defect is one of the main reasons for protection misoperation at present.In the paper,the protection secondary circuit defect is analyzed by taking a protection misoperation accident of Huaneng Ningxia Dam Power Generation Co.,Ltd.As an example,and related rectification measures are proposed.The analysis result will play a positive role in improving protection correct operating ratio.