摘要
传统的电力电容器检测通常为断电,离线进行,影响了生产。已有的电力电容器在线诊断技术集中于对电容量、介质损耗角的测量,检测结果滞后于故障的发生,且检测结果并不理想。主要针对电力系统中高压电力电容器的常见故障,对其故障中发生放电现象的机理进行了分析,得到电力电容器种种故障,通常伴随有放电现象的结论,指出放电现象为其故障初征兆。分析了对高压电力电容器进行在线监测其放电现象可行性,找到监测其放电信号的处理方法,完整设计了一种在线监测电力电容器放电新技术的理论。
The traditional detection methods for power capacity would be carry in off line condition,that affect the power transmission. Exist on line detection methods for power capacity main in deal with the capacity's volume and .Obviously, the gotten result would be lag behind the fault which had happened. According to the general faults of HV power capacity in power systems, authors analysis the reasons of partial discharge(PD) in fault, get the conclusion that the faults of PC generally accompany with PD, and PD is in the initial phase of the faults. Authors analysis the possibility of detection for these PD and find ways, design a kind of detection for PD with PC.
出处
《四川电力技术》
2003年第6期6-7,55,共3页
Sichuan Electric Power Technology
关键词
电力电容器
放电现象
在线监测
频谱分析
power capacity
partial discharge
on-line detection
frequency analysis
