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Partial Discharge Detection for Underground Transmission Lines Using Nonnegative Matrix Factorization | IEEE Conference Publication | IEEE Xplore

Partial Discharge Detection for Underground Transmission Lines Using Nonnegative Matrix Factorization


Abstract:

In this paper, we describe a method for detecting partial discharge (PD) in underground transmission lines from time series data. In general, PD is a discharge phenomenon...Show More

Abstract:

In this paper, we describe a method for detecting partial discharge (PD) in underground transmission lines from time series data. In general, PD is a discharge phenomenon that occurs when electric fields concentrate on voids or protrusions at the insulator interface of underground transmission lines. The accurate detection of PD and classification of its patterns play an important role in the diagnosis of underground transmission line deterioration. In this paper, we propose a method for using time series PD data to form a basis matrix that represents discharge patterns and a coefficient matrix that represents the contribution of each basis pattern over time by applying nonnegative matrix factorization. The proposed method (a) does not require a large amount of data, (b) works without any supervised information, and (c) can track new patterns of PD data by adding bases. Experiments using real data confirmed that PD patterns could be separated as a basis matrix. In addition, it was suggested that PD data could be extracted even for unknown time series, and new PD patterns could be extracted by re-learning.
Date of Conference: 17-20 December 2022
Date Added to IEEE Xplore: 26 January 2023
ISBN Information:
Conference Location: Osaka, Japan

Funding Agency:


I. Introduction

Partial discharge (PD) is an electrical discharge within an insulation system that does not completely bridge the electrodes under high electric field stress [1]. Generally, when there are voids or protrusions at the insulator interface in electrical equipment used under high voltage, PDs occurs as a result of concentration of electric fields in these areas. There are several types of PDs that can occur for different reasons [2], but one type can damage insulation, and eventually lead to dielectric breakdown accidents. Therefore, it is a demanding task to monitor PDs to accurately determine the insulation performance and to perform preventive maintenance.

References

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