利用CT三相通流模拟带负荷校核二次接线技术研究

Research on Secondary Connection Technology of CT Three-phase Flow Simulation with Load Checking

针对线路保护常用的电流方向保护方法,分析了装置动作的基本原理和存在问题,结合工程现场需求,采用电流互感器模拟带负载工况,对二次回路接线校验进行了研究,并针对电流互感器二次回路接线错误制定了相应的改进措施,从而提高微机保护二次回路接线的准确性。

Aiming at the current direction protection method commonly used in line protection,the basic principle and existing problems of device operation were analyzed.In combination with the requirements of the engineering site,the current transformer was used to simulate the load condition,and the secondary circuit wiring check was studied.Corresponding improvement measures had been made for the secondary circuit wiring error of the current transformer,so as to improve the accuracy of the secondary circuit wiring of the microcomputer protection.