基于Rogowski线圈原理的变电站绝缘子闪络快速监测方法  

Method based on Rogowski coil theory for rapid monitoring insulator flashover in substation

作　　者：刘志学[1,2] 李诗华[1,2] 单鸿旭 吴伟斌[1,2] 许琛雍 郭晔[1,2] 

机构地区：[1]江苏省电力公司检修分公司苏州检修分部,江苏苏州215000 [2]苏州供电公司,江苏苏州215000

出　　处：《电力系统保护与控制》2011年第13期126-129,133,共5页Power System Protection and Control

摘　　要：分析了绝缘子闪络故障对电力系统暂态稳定和事故处理速度造成的不利影响,阐述了实现绝缘子闪络快速监测的必要性,根据Rogowski线圈原理和电子技术理论设计了一种变电站绝缘子闪络快速监测系统。通过分析可知当本系统与二次系统配合使用时,可以在闪络故障瞬间作用于跳闸,避免由微机保护采样数据窗带来的10～20ms延时,同时,还可以向运行人员告警故障位置,方便故障点查找。最后给出了绝缘子发生闪络故障时监测系统相关电气量波形图。This paper firstly analyzes the harmful influence of the insulator flashover on the transient stability of power system and the speed of accident treatment. Following,it expounds the necessity of realizing the rapid monitoring of insulator flashover. Then,a monitoring system for insulator flashover based on the theory of Rogowski coil and electronic technology is designed. Analysis shows that when the system is used in conjunction with the secondary system,it can instantly realize the flashover fault trip,to avoid the 10 ms-20 ms delay brought by microcomputer protection sampling data window,at the same time,it can also tell the operating personnel the fault location in order to search fault easily,finally,the waveforms picture of relevant electrical measurements in the monitoring system is given.

关 键 词：ROGOWSKI线圈 绝缘子闪络 基本RS触发器 暂态稳定 事故处理 

分 类 号：TM216[一般工业技术—材料科学与工程]