零序电流补偿型的漏电保护原理

The Principle of Current Leakage Protection with Zero-Sequence Current Compensation

本文分析了选择性漏电保护的基本原理及优缺点,提出了一种新型的漏电保护原理-零序电流补偿型的漏电保护原理,着重分析了这种新型选择性漏电保护原理的特点,最后介绍了用此原理设计的漏电保护装置在煤矿的使用情况。

After analyzing the basic principle and characteristics of current leakage protection with selectivity, the author puts forward a new technique, namely, current leakage protection with zero-sequence current compensation. The features of the method are analyzed, and the application of the protection apparatus in coal mines is introduced.