Optical Characteristics and Fault Diagnosis of Partial Discharge in C4F7N/CO2 Gas Mixture and SF6 Based on Novel Multispectral Microarray Detection
IEEE transactions on dielectrics and electrical insulation(2022)
摘要
Optical partial discharge (PD) detection is an efficient means of diagnosing the insulation status of power equipment. C 4 F 7 N/CO 2 gas mixture is a very potential environmentally-friendly SF 6 substitute gas, and its PD optical characteristics need to be studied to guide the PD diagnosis of novel C 4 F 7 N/CO 2 equipment. Therefore, this article proposes a multispectral microarray detection technology, which can achieve high-sensitivity detection and PD diagnosis by simultaneously collecting the spectral characteristics of multiple bands. By setting up an experimental platform, the PD experiments of four typical defects in the C 4 F 7 N/CO 2 gas mixture with five different proportions and pure SF 6 are carried out. Based on the analysis of PD multispectral features, the correlation between different gases and the difference between different defects are obtained. Finally, by combining multispectral detection with a ${t}$ -distributed stochastic neighbor embedding (T-SNE) feature extraction algorithm, a PD diagnosis method that can adapt to both C 4 F 7 N/CO 2 gas mixture and SF 6 is proposed, which provides a reference for the PD detection of novel C 4 F 7 N/CO 2 equipment application.
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关键词
C4F7N/CO2 gas mixture,multispectral microarray detection,optical characteristic,partial discharge (PD)
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