大型变电站监控系统抗干扰方法研究  

Study on Anti Interference Method of Monitoring System in Large Substation

作　　者：隋龙 SUI Long(Xuji Electric Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]许继电气股份有限公司,河南许昌461000

出　　处：《电工技术》2023年第9期122-124,共3页Electric Engineering

摘　　要：目前大型变电站监控系统使用的抗干扰方法对于外界电磁干扰的防御能力较弱,监控系统在进行故障定位的过程中会出现较大偏差,因此设计一种针对大型变电站监控系统的抗干扰方法。分析大型变电站监控系统电磁干扰特征,得到分闸和合闸开关操作在二次回路中的暂态电压的幅值与重复率和动触头运动时间的关系曲线,设计抗干扰过程中需要的硬件设备,对供电电源抗干扰滤波器进行改造并设计运行方式。抗干扰方法性能实验结果表明,在设计的方法下,故障定位平均误差能降低到3.06,验证了该方法的有效性。At present,the anti-interference method used by the monitoring system of large substations is weak against external electromagnetic interference,and the monitoring system will have large deviation in the process of fault location.Therefore an anti-interference method is designed for the monitoring system of large substations.The electromagnetic interference characteristics of the large-scale substation monitoring system are analyzed,and the relationship curve between the amplitude and repetition rate and the motion time of the moving contact of the transient voltage operating in the secondary circuit of the opening and closing switches was obtained.The hardware equipment required in the anti-interference process was designed,and the anti-interference filter of the power supply was modified and the operation mode was designed.The performance experimental results of the anti-interference method show that the average error of fault location can be reduced to 3.06 under the designed method,which verifies the effectiveness of the method.

关 键 词：大型变电站 监控系统 电磁干扰 故障定位 

分 类 号：TN925.5[电子电信—通信与信息系统]