The current operation manner of the power system is complicated and changes frequently, causing great difficulty in the analysis of operation of relay protection.

目前电力系统的运行方式复杂、变化频繁，给继电保护的运行分析带来很大的困难。

youdao

Relay protection and fault information system set technical support operation and management, providing support for analysis and processing power grid failure.

继电保护及故障信息系统是一个集继电保护运行、管理的技术支持系统，为分析、处理电网故障提供支持。

youdao