具有异常分析功能的通用型数字量输入式合并单元

Universal digital-input merging unit with fault analysis function

数字量输入式合并单元是变电站数字采样基本设备,通过合并电子式互感器数字量报文,实现变电站电气间隔的数字化采样。目前各厂家电子式互感器与数字量输入式合并单元间互操作性不强,输出易产生异常数据而影响可靠性,无法满足当前智能变电站对数字化采样的要求。对数字量输入式合并单元的多规约兼容、异常采样数据监测、链路状态分析等技术进行了研究,并在物理装置上实现。试验测试表明,研究成果可以提升数字采样系统的互操作性,提高数字化采样的可靠性,从而提升变电站智能化水平。

Universal digital-input merging unit is an important device in smart substation.By receiving and merging digital message from electronic transformer,digital merging unit transfers sampling data to substation.At present,the interoperability between different electronic transformers and digital merging units is low,which affects the reliability of output data.The requirements of digital sampling in smart substation cannot be satisfied.Multi-protocol compatibility,outlier data detection and link state analysis are explored for digital merging unit and the functions are implemented on a physical device.Basing on the experimental results,it shows that the exploration can increase intelligent level for substation by improving its compatibility for digital sampling system and reliability for digital sampling.