减少剩余电流式电气火灾监控系统误报警研究

Study on Reducing False Alarm of Residual Current Electric Fire Monitoring System

目前在剩余电流式电气火灾监控系统的应用中,由于负载设备均有泄漏电流的因素,多个负载设备时,累积泄漏电流不确定,而电气火灾监控的报警阈值在设置后固定不变,造成电气火灾监控系统误报警及漏报警的情况时有发生。分析了误报及漏报的根本原因,提出了一种新型算法,动态调整剩余电流阈值,并进一步优化了剩余电流的测量方法,减少误报及漏报情况的发生。

At present, in the application of residual current electric fire monitoring system, due to the leakage current factor of load devices, the cumulative leakage current is uncertain in different multiple load devices, and the alarm threshold of electrical fire monitoring is fixed after setting, resulting in the false alarm and missing alarm of electric fire monitoring system often occur.This paper analyzes the primary causes of false alarms and missing alarms, and proposes a new algorithm, that the residual current threshold is adjusted dynamically, and the measurement method of residual current is optimized.It can reduce false alarm and missing alarm.