摘要
鉴于在电压互感器正常运行过程中保护用电压互感器二次回路多点接地引起保护误动的事故N600接地线电流值均偏大异常,设计一种N600接地线电流监测装置实时监测N600接地线电流,在超出电流值预定范围时进行报警。介绍该装置的总体设计方案,并将装置应用到N600全站一点接地的变电站上。结果证明,在使用N600接地线电流监测装置后,变电站运维人员能够有效提前管控预防电压互感器二次回路多点接地。
In view of the abnormality of the N600 grounding wire current during the normal operation of the voltage transformer during the normal operation of the voltage transformer,the N600 grounding current monitoring device is designed to monitor the N600 grounding wire in real time.The current is alarmed when the current value is exceeded.The overall design of the device is introduced and applied to the substation where the N600 is grounded at one point.The result proves that after using the N600 grounding wire current monitoring device,the substation operation and maintenance personnel can effectively control and prevent the multi-point grounding of the secondary circuit of the voltage transformer.
作者
赵琰
ZHAO Yan(Extra High Voltage Power Transmission Company Liuzhou Bureau,Liuzhou 545006,China)
出处
《电气开关》
2019年第6期50-52,共3页
Electric Switchgear
关键词
N600
多点接地
电压互感器
N600
multi-point grounding
voltage transformer
