摘要
大型电力变压器内部的局部放电信号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衰减、振荡及时延。运用Saber仿真软件,利用典型的局部放电的波形,考虑电力变压器外联网络复杂程度以及变电站另一个变压器对其的影响,研究了局部放电信号在大型电力变压器在线监测系统中的传播特性。
The internal partial discharge (PD) signal of large power transformer may propagate to the monitoring device through transformer winding. As a basic information for fault diagnostic, discharge pulse signal can be distorted with some attenuation, oscillation and time delay. Utilizing the simulation software Saber and the PD waves, considering the complex of external network of power transformer and the influence from another power transformer in substation, the propagation characteristic of PD signal is studied in a on-line monitoring system of large power transformer.
出处
《高压电器》
EI
CAS
CSCD
北大核心
2005年第3期182-185,共4页
High Voltage Apparatus
基金
教育部骨干教师基金项目(重大990301)
关键词
大型变压器
局部放电
外联网络
large transformer
partial discharge
external network