摘要
抑制干扰是变压器局部放电在线监测的关键技术,为此综述和分析了变压器局部放电在线监测中的各种干扰信号特征、各种抗干扰技术(如快速傅立叶变换法、小波变换法、自适应数字滤波等)及其效果,还介绍了实际局部检测中分层式抑制干扰模式。
To suppress interference is a critical technique for partial discharge on-line monitoring of transformers. Based on the analysis of various interference in partial discharge on-line monitoring of transformers, the paper studies some various anti-interference techniques which include FFT, wavelet analysis, digital filter technique and so on, and gives a multi-layer interference suppression model in partial discharge on-line monitoring of transformers. The results of computer simulation prove the effectiveness of rejecting periodic interference, pulse interference and white noise.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2005年第3期51-52,64,共3页
High Voltage Engineering
关键词
变压器
局部放电
在线监测
干扰
transformers
partial discharge
on-line monitoring
interference
