摘要
由于变压器是绕组类设备,变压器内部的局部放电信号将经绕组向两端传播至监测装置,从而导致作为故障诊断基础信息的放电脉冲信号发生一定程度的畸变。该文根据对脉冲信号在绕组中传播过程的实际测量结果,获得了绕组的基本冲击响应特性,利用典型模型放电的纳秒级快速变化波形测量结果,研究了不同情况(不同放电类型、不同放电部位以及不同的测量点)下放电脉冲信号在绕组中的传播规律,并提出了一种从实际测量波形中有效分析原始放电波形的方法,为实际的局部放电脉冲波形监测提供了试验依据。
The discharge pulses as the basic information of fault diagnosis will be distorted during the propagation course in the transformer winding. In this paper, the discharge pulses could be measured after the propagation, then the impulse response characteristic of winding could be obtained. And the propagation characteristic of discharge pulses along the winding could be achieved according to the measuring results of typical discharge model. Thus a method separating the original discharge signal from the measuring signal could be acquired, it will be helpful to the monitoring of partial discharge on site.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第4期31-36,共6页
Proceedings of the CSEE
基金
国家自然科学基金资助项目(59637200)东北电力集团公司资助项目
