电器与能效管理技术Issue(5)：15-19,5.DOI:10.16628/j.cnki.2095-8188.2017.05.004
变电站开关操作对二次就地设备的电磁骚扰特性分析
Characteristic Analysis of Electromagnetic Interference Caused by Switch Operation in Substation
谢善益 1李明 2周刚 1徐彬 2翟瑞聪1
作者信息
- 1. 广东省电力公司电力科学研究院,广东 广州 510600
- 2. 南京南瑞继保电气有限公司,江苏 南京 211106
- 折叠
摘要
Abstract
The transient electromagnetic field generated by isolation switch's operation is one of the important sources of electromagnetic interference in intelligent substation.Transient electromagnetic interferences affect the reliability of the secondary side circuit,and lead to electrical relay protection misoperation or damage.Based on the breakdown process,this paper analyzed the characteristics of the electromagnetic disturbance caused by the isolation switch and circuit breaker operation.Analysis models of multi-nodes transmit line voltage response and switching arc were built up.Through the numerical calculation of power network model,characteristics of overvoltage and over-current were evaluated synthetically.The simulation results demonstrate that the bus current consists of a series of tapered attenuating oscillating waves during the operation of the substation switch,and a step-up transition between the disconnector,the circuit breaker produces a maximum voltage to ground,and the frequency characteristic of the disturbance signal depends on the length of the bus and stub.关键词
开关操作/瞬态开关操作电场/分布参数/电弧重燃/过电压Key words
switching operation/switching operation transient electric field/distributed parameter/arc restriking/overvoltage分类
信息技术与安全科学引用本文复制引用
谢善益,李明,周刚,徐彬,翟瑞聪..变电站开关操作对二次就地设备的电磁骚扰特性分析[J].电器与能效管理技术,2017,(5):15-19,5.
