110kV变电站弱电系统抗干扰研究设计要点浅析

Elementary Analysis on Key Points for Research and Design of Antiinterference in 110kV Substation Weak Current System

目前,110kV变电站均按"无人值班"(少人值守)的方式进行设计,站内监控系统采用以计算机监控系统为基础的集中监控方案,并具有远动功能,因此变电站内设置了大量的微机保护设备和信息技术设备。而变电站却是电磁干扰源密集处,保证变电站监控系统的稳定性和可靠性是非常重要的。结合陕西省泾河东庄水利枢纽110kV施工变电站工程,对变电站防电磁干扰的设计要点进行分析,结果可供类似工程参考。

At present,110 k V substations are designed in the manner of"unattended"(less on duty).The monitoring system in the station adopts a centralized monitoring scheme based on computer monitoring systems and has a remote control function.Therefore,a large number of microcomputers are installed in the substation.Protection equipment and information technology equipment.However,substations are densely populated with electromagnetic interference sources.It is very important to ensure the stability and reliability of the substation monitoring system.Combined with the 110 k V construction substation project of Dongzhuang Water Conservancy Project in Luohe,Shaanxi Province,the design points of anti-electromagnetic interference of the substation are analyzed,and the results can be used as reference for similar projects.