智能变电站合并单元延时的检测方法

Study on Delay Detection Method of Merging Unit in Intelligent Substation

合并单元是智能变电站中实现数字量采样值传输的重要设备,关系到继电保护的正确动作与否。介绍了智能变电站二次信号采集方法,分析合并单元延时产生的原因,提出了利用继电保护测试仪同时输出模拟量和数字量的混合输出测试合并单元延时的方法。

Merging unit is important equipment in intelligent substation to transmit digital sample values, which is related to the correctness of protection action. This article describes the secondary signal acquisition method in intelligent substation and analyzes the causes for the merging unit delay. In the final, the paper proposes to detect the merging unit delay by using the analog and digital output from relay protection tester.