基于SCADA系统的CVT缺陷排查与分析  

Defect Investigation and Analysis of Capacitor Voltage Transformer Based on SCADA System

作　　者：邱炜 林岑 郭超 罗杨 高竣 杨红权 刘彦琴 刘鑫 陈佳 曾晓维 QIU Wei;LIN Cen;GUO Chao;LUO Yang;GAO Jun;YANG Hongquan;LIU Yanqin;LIU Xin;CHEN Jia;ZENG Xiaowei(State Grid Sichuan Electric Power Chengdu Power Supply Company,Chengdu 610000,China;Sichuan Hongye Yisen Electric Power Company,Chengdu 610000,China)

机构地区：[1]国网四川省电力公司成都供电公司,成都610000 [2]四川宏业益森电力有限公司,成都610000

出　　处：《电力电容器与无功补偿》2023年第6期86-92,共7页Power Capacitor & Reactive Power Compensation

摘　　要：通过等效电路分析了电容式电压互感器(capacitor voltage transformer,CVT)二次电压变化与其电容量变化的关系,结合SCADA系统中存储的线路和母线电压数据,开展了某电网100余座变电站CVT缺陷排查工作,有效避免了多起CVT缺陷扩大影响电力系统稳定运行的事故发生,通过典型缺陷解体案例的分析进一步验证了该方法的有效性,该方法的成功实践一定程度上为CVT缺陷的提前发现和及时处理提供了有效经验。The relationship between variation of secondary voltage and its capacitance of capacitor voltage transformer(CVT)is analyzed by equivalent circuit analysis.The defect investigation work of CVT of more than 100 substations of certain network is developed in combination with the line and busbar voltage data stored in the SCADA system,which effectively avoid the fault occurrence of stable operation of power sys-tem due to multiple CVT defect development.The effectiveness of the method is proved further through the analysis of typical defect case.The successful practice of the method,to a certain extend,provides effective experience for the early detection and timely treatment of the CVT defect.

关 键 词：电容式电压互感器 等效电路 SCADA 缺陷排查 

分 类 号：TM451.2[电气工程—电器]