提高智能变电站采样可靠性的研究与应用

以智能变电站二次系统数据源头合并单元装置为切入点，分析了目前智能变电站采样系统存在的问题。提出高可靠性采样方法，并以此为基础设计新型合并单元装置。新型合并单元具备异常采样数据分析和处理功能，发生数据异常时能迅速准确判别，为变电站内继电保护提供数据异常的信息，帮助继电保护作相应处理以避免不正确动作。经过分析和验证，所研究方法可提高目前智能变电站采样环节的可靠性。

Research on improvement of sampling reliability in smart substation and application

This paper takes the merging unit as point cut of smart substation secondary system data source and analyzes the problems of present sampling system. A high reliability sampling way is proposed, based on which a new type of merging unit is designed. The new merging unit owns abnormal sampling data analysis and processing function. It can quickly and accurately distinguish the abnormal data, send information to the relay protection in the substation and help the relay protection to avoid incorrect action. The research can highly improve the reliability of the sampling in the smart substation with analysis and verification.