适应智能调度的继电保护故障信息系统改造

Renovation of Protective Relaying Fault Information System Adaptable to Smart Dispatch

为适应智能调度应用,华北电网对其原有继电保护故障信息系统进行全面改造。文章从系统结构、通信规约、信息格式和故障诊断等方面对改造方案进行了详尽分析。首先根据新建站、改造站的不同,提出了几种典型的系统架构设想。分析了保护与录波独立组网的必要性,采用成熟的通信技术,结合IEC 61850等相关国际标准,提高信息上送速度和质量。基于可扩展标记语言(extensible markup language,XML)标准,详尽地规范了故障报告内容和故障报告头文件格式(head description of recorder,HDR),完善了设备信息、故障量信息,极大地方便了主站系统信息过滤、整合。最后探索了几种不同的故障诊断方法,以提升系统整体运行水平。

To be adaptable to smart dispatch, overall renovation of existing protective relaying fault information system of North China power grid is performed. The renovation scheme is analyzed in detail in system structure, communication protocol, information format and fault diagnosis. Firstly, according to the differences between newly built substations and renovated substations several typical system structures are conceived and proposed, and the necessity of independent networking for protection devices and fault recorders is analyzed. Then adopting proven technique and combining with related international standards such as IEC 61850 and so on, the speed and quality of information uploading are improved; based on the standard of extensible markup language （XML） the content of fault report and the format of HDR are standardized with detail to perfect device information and fault character information, thus in master station system the convenience in information filtering is swinging implemented. Finally, several different fault diagnosis methods are explored to improve overall operation level of this system. Actual operational experiences of several months show that the proposed renovation scheme for existing protective relaying fault information system is reasonable and effective.