Gas-insulated Switchgear Discharge Pattern Recognition Based on KPCA and Multilayer Neural Network

He, Nan; Liu, Hongjing; Qian, Mengdi; Miao, Wang; Liu, Kewen; Wu, Lei

doi:10.1109/ccisp52774.2021.9639366

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2023

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“…Gas-insulated switchgear (GIS) is a type of electrical equipment that uses gas to insulate and protect different parts of power transmission and distribution systems [1]. GIS is advantageous because it has a small size [2] and flexible configuration and is easy to maintain [3].…”

Section: Introductionmentioning

confidence: 99%

Supervised Contrastive Learning for Fault Diagnosis Based on Phase-Resolved Partial Discharge in Gas-Insulated Switchgear

Dang,

Ho,

Vo-Nguyen

et al. 2023

Energies

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Supervised contrastive learning (SCL) has recently emerged as an alternative to conventional machine learning and deep neural networks. In this study, we propose an SCL model with data augmentation techniques using phase-resolved partial discharge (PRPD) in gas-insulated switchgear (GIS). To increase the fault data for training, we employ Gaussian noise adding, Gaussian noise scaling, random cropping, and phase shifting for supervised contrastive loss. The performance of the proposed SCL was verified by four types of faults in the GIS and on-site noise using an on-line ultra-high-frequency (UHF) partial discharge (PD) monitoring system. The experimental results show that the proposed SCL achieves a classification accuracy of 97.28% and outperforms the other algorithms, including support vector machines (SVM), multilayer perceptron (MLP), and convolution neural networks (CNNs) in terms of classification accuracy, by 6.8%, 4.28%, 2.04%, respectively.

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Section: Introductionmentioning

confidence: 99%