一种基于站域电流信息的保护系统监测元件

A Monitoring Relay on Protection System Based on Substation Area Current Information

智能变电站中继电保护是包含合并单元、保护设备和智能终端的保护系统,保护系统中各智能电子设备的运行状态及其可靠性,直接关系到电力系统的安全运行。目前,智能变电站保护系统中各智能电子设备运行状态缺乏有效的监测手段。根据站域保护可通过GOOSE网络获取全站所有回路电流信息的特点,研究了一种基于站域电流信息的保护系统监测元件MRPS,它能准确识别合并单元、电子式电流互感器和智能终端的异常和故障,从而实现对保护系统中各种智能电子设备运行状态的实时监测。

Protection equipment in intelligent substation is an intelligent protection system which including merging unit, protection equipment and the intelligent terminal. The status and reliability of the intelligent electronic devices in protection system is very important to power system＇ s safety. At present,the status of the intelligent electronic de- vice in intelligent substation protection system is lack of effective monitoring means. According to the characteristics that substation area protection can obtain current information of all circuits in substation through GOOSE network,a monitoring relay on protection system named MRSC is designed in this paper. Based on the principle of current differ- ential,MRPS can accurately identify the abnormal condition or malfunction of merging unit or electronic current transformer, and intelligent terminals, MRPS can realize real-time condition monitoring of intelligent electronic device in protection system.