智能变电站中点对点传输采样值延迟及延迟校验方案  

Delay of point-to-point transmission of sampled values in smart substation and its calibration scheme

作　　者：徐敏[1] 鲍有理 李宝伟 杨生苹 郝慧贞 

机构地区：[1]无锡供电公司,江苏无锡214000 [2]许继电气股份有限公司,河南许昌461000

出　　处：《电力系统保护与控制》2012年第17期145-149,共5页Power System Protection and Control

基　　金：江苏省电力公司科技项目(J2011029)

摘　　要：分析了智能变电站中采用点对点方式传输电子式互感器模拟量采样值报文时采样及传输环节的时序,得出了采用点对点方式传输的模拟量采样值额定延迟的组成部分。在此基础上,提出一种校验点对点传输模拟量采样值额定延迟正确性的方法,该方法结合模拟量采样值的相位误差校验和模拟量采样值报文发送延迟的测量来验证其额定延迟数值的正确性。通过理论分析和实际测试验证了该方法的正确性和可行性。该方法测量精度高、原理简单、易于实现,有着广泛推广的现实意义。This paper analyzes the time sequence of sampling and transmission link in the process of point-to-point transmission of electronic transformers analog sampled values in smart substation, and obtains the parts of the rated delay of analog sampled values by point-to-point transmission. And then it puts forward a rated delay calibration scheme for point-to-point transmission of samples values. The method combines the calibration method of analog sample values phase error with the measurement of delay messages of analog samples values to prove the numerical correctness of the rated delay. Theoretical analysis and practical testing verify the feasibility and correctness of this method. This method is easy to realize and shows high precision. It is of practical significance of being widely promoted.

关 键 词：智能变电站 点对点 电子式互感器 采样值延时 校验方案 

分 类 号：TM762[电气工程—电力系统及自动化]