西门子7UT6差动保护的校验方法探析

Study on Verification Methods for Differential Protection in Siemens 7UT6

文章阐述了西门子7UT6差动保护工作原理,以其在变压器保护中的应用为例,计算校验差动启动值、速断值及比率制动特性,并着重介绍了以一组三相电流校验比率制动特性的方法。

Based on an introduction of the working principle of differential protection in Siemens 7UT6, this article, taking as an example its application in transformer protection, computes and verifies the differential starting value, quick-breaking value and ratio braking characteristics, which focuses on the introduction of the ratio braking characteristics for three-phase current checking.