基于无线通信的智能变电站直流电源故障远程监测方法

Remote Monitoring Method of Direct Current Power Supply Fault in Smart Substation Based on Wireless Communication

为提升直流电源运行的可靠性,实现对其故障的精准监测,结合无线通信技术的应用,以某智能变电站为例,开展直流电源故障远程监测方法的设计。设计无线通信采样技术参数,采集智能变电站直流电源运行数据;引进零点数字滤波器,建立针对采样信号的线性差分方程,获取信号中的干扰信号,进行采样数据的抗干扰滤波处理;采用建立主成分函数的方式,采集其特征参量,并采用隐半马尔可夫模型进行多特征融合,进行电源故障的远程无线监控。对比实验结果表明,该方法不仅能够精准监测电源故障,而且具有强大的远程监测能力,可以适应各种复杂的工作场景。

In order to improve the reliability of direct current power operation and realize the accurate monitoring of its faults,combined with the application of wireless communication technology,take a smart substation as an example to design the remote monitoring method of direct current power failure.Wireless communication sampling parameters are designed to collect the operation data of direct current power supply in smart substation,introduce zero-point digital filter,establish linear difference equation for sampling signal,obtain the anti-interference filtering processing of sampling data;establish the principal component function,and adopt hidden semi-Markov model,based on the remote wireless monitoring of power failure.The comparative experimental results show that this method can not only realize the accurate monitoring of power failure,but also has a powerful remote monitoring ability,which can adapt to various complex working scenarios.