电子器件2025，Vol.48Issue(2)：359-365,7.DOI:10.3969/j.issn.1005-9490.2025.02.019
高频信号触发计时下的变压器局部放电故障光电图像融合定位方法
Photoelectric Image Fusion Positioning Method of Transformer Partial Discharge Fault under High Frequency Signal Trigger Timing
摘要
Abstract
The photoelectric image fusion location method of transformer partial discharge fault under high-frequency signal trigger timing is studied to solve the problem that the location accuracy is affected due to the lack of discharge signal when high-frequency sig-nal detection method detects transformer partial discharge fault.Firstly,the high-frequency signal of transformer is collected by using high-frequency sensor,and the high-frequency signal of transformer partial discharge is extracted through continuous wavelet transform,which is used as the trigger timing of photoelectric image fusion location.Then,the NSCT decomposition method is used to decompose the high-frequency signal spectrum and photoelectric spectrum of the distribution transformer,and the photoelectric fusion image is gen-erated according to the low-frequency subband fusion rules and high-frequency subband fusion rules.Finally,the HOG feature extraction method is used to extract the partial discharge features in the photoelectric fusion image of the transformer,and the extracted feature vec-tor is used as the input of the CART decision tree to output the partial discharge fault location results of the distribution transformer.The experimental results show that the proposed method can accurately and quickly locate the partial discharge fault points of distribution transformers,and provide a basis for the reliable operation of distribution transformers.关键词
高频信号/触发计时/配电变压器/局部放电故障/光电图像/融合定位Key words
high frequency signal/trigger timing/distribution transformer/partial discharge fault/photoelectric image/fusion positioning分类
信息技术与安全科学引用本文复制引用
江炯,岳龙,徐钟波,徐子昂,吴礼刚..高频信号触发计时下的变压器局部放电故障光电图像融合定位方法[J].电子器件,2025,48(2):359-365,7.基金项目
多趾特征光谱检测装置及其在输变电设备故障综合诊断中的应用研究项目(KJCX024) （KJCX024）
