一种继电保护硬压板远方监视技术

硬压板在继电保护二次回路用于保护功能投退,为保证保护正确动作,需正确投退硬压板,由于其串联在电路中,状态不能被远方监视。本文提出了一种实现保护硬压板远方监视的方法,它无需组建专门的系统,以非接触、金属位置感应的方式获取压板的物理状态,采用光电隔离方式接入到原有的保护(测控)装置,传送到原有的监控系统,从而实现硬压板的远方监视。

A Study on Remote Monitoring Technology of Relay Protection Hard Connection Piece

The hard connection piece is installed in the secondary circuit of the relay protection for input or exit of a function. In order to ensure the correct operation of relay protection device, it is important to put in or out the hard connection piece correctly. But because it is connected in series in the circuit, there is a disadvantage that its state cannot be monitored at the remote location. This paper presents a method to realize the remote monitoring of the Connection piece. It adopts non-contact way of metal position sensor to get the physical state of connection piece, the state inputs through the photoelectric isolation method into the existing protection devices, and transferes to the original monitoring system, so as to realize the distance monitoring of hard connection piece.