分析一次主变压器低压控制过流保护误动作及改进方案

Analysis of a Low Voltage Control Overeurrent Protection Malfunction for the Main Transformer and Improvement Program

本文主要分析了一次主变压器低压控制过流保护误动作的原因，针对此保护可能存在的缺陷，提出了修改定值和更改保护逻辑的解决方案，以防止误动再次发生，并对类似保护的整定和设计提供一些有益借鉴。

This paper mainly analyzes the causes of a low voltage control overcurrent protection malfunction.In view of the possible defects of this protection, a solution to modify the value and change the protection logic is proposed.Protection against malfunction from happening again.And this paper provide some useful reference for similar protection setting and design.