数字化电能计量中丢帧误码延时分析与事件告警判断研究

Analysis of Lost Frames,Error Codes and Time Delay and Judgment of Event Alarm in the Digital Energy Metering Process

针对IEC 61850协议下,数字化电能表计量过程中的丢帧、误码和延时现象,介绍了一种基于插值算法的丢帧误码延时事件告警判断方法。先是通过解析计算计算出由丢帧误码延时引起的电能计量误差的大小,使人们对丢帧误码延时引起的误差的大小有一个准确清晰的认识,然后提出用插值算法计算其引起的电能误差大小,根据插值算法计算的电能相对误差大小判断丢包的严重程度,从而对数据的网络传输状况进行判断,并进行告警和事件记录。Matlab仿真验证结果表明:用插值算法能准确地计算出因丢帧误码延时引起的电能计量误差的大小,为丢帧误码延时事件的告警提供依据。

In view of the phenomena of lost frames,error codes and time delay in the digital energy metering process in the IEC 61850 protocol,this paper introduced a judgment method for such events as lost frames,error codes and time delay,which was based on the interpolation algorithm. The energy metering error rate caused by lost frames,er-ror codes and time delay was first calculated through analytical calculation in order to have an accurate and clear awareness of it. And then this paper proposed using the interpolation algorithm to calculate the energy metering error. The results were used to judge the seriousness of package loss so as to judge the status of data transmission network, and thereby alert and event records should be generated. The Matlab simulation results showed that the interpolation algorithm could accurately calculate the energy metering error caused by lost frames,error codes and time delay and provide a basis for the event alert of lost frames,error codes and time delay in the digital energy metering process.