Research on the Typical Partial Discharge Using the UHF Detection Method for GIS

Gao, Wensheng; Ding, Dengwei; Liu, Weidong

doi:10.1109/tpwrd.2011.2166089

Cited by 106 publications

(47 citation statements)

References 15 publications

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“…Various electrical, mechanical, and chemical methods have been used to detect PDs in GISs [7,8]. Some existing electrical methods use ultra-high frequency (UHF) sensors [9][10][11][12][13], while sound measurement methods use acoustic sensors [14,15] and chemical methods use dissolved gas analysis [16,17]. In this study, an electrical method that employs a UHF sensor is used for the PD measurement system.…”

Section: Introductionmentioning

confidence: 99%

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

Nguyen

Yun³

et al. 2018

Energies

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The analysis of partial discharge (PD) signals has been identified as a standard diagnostic tool for monitoring the condition of different electrical apparatuses. This study proposes an approach to detecting PD patterns in gas-insulated switchgear (GIS) using a long short-term memory (LSTM) recurrent neural network (RNN). The proposed method uses phase-resolved PD (PRPD) signals as input, extracts low-level features, and finally, classifies faults in GIS. In the proposed method, LSTM networks can learn temporal dependencies directly from PRPD signals. Most existing models use support vector machines (SVMs) and mainly focus on improving feature representation and extraction manually to analyze PRPD signals. However, the proposed model captures important temporal features with the help of its low-level feature extraction capability from raw inputs. It outperforms conventional SVMs and achieves 96.74% classification accuracy for PRPDs in GIS.

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Section: Introductionmentioning

confidence: 99%

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

Nguyen

Yun³

et al. 2018

Energies

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“…To detect PD, different schemes such as electrical, acoustical [9], and ultra-high frequency (UHF) detection methods [10,11] have been developed in previous years to measure partial discharge pulses. Many researchers have studied and developed the UHF method [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have studied and developed the UHF method [11][12][13]. UHF sensors can detect the electromagnetic waves generated by PD with a frequency range from 300 MHz to 3 GHz [14,15].…”

Section: Introductionmentioning

confidence: 99%

A New Discharge Pattern for the Characterization and Identification of Insulation Defects in GIS

Yao

Hui

Li³

et al. 2018

Energies

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Identification of insulation defects in gas insulated metal-enclosed switchgear (GIS) is important for partial discharge (PD) evaluation. This article proposes a polar coordinate pattern approach to characterize the different kinds of defect types. These defect types include floating electrodes, a fixed protrusion on the enclosure, surface contamination on the spacer, metallic prominence on the high voltage electrode, a void in the insulator, and free metal particles on the enclosure. First, the physical models for the insulation defects in the established GIS model are designed. Second, the phase resolved pulse sequence (PRPS) data sets are obtained using ultra-high frequency (UHF) measurement. Then, the polar coordinate patterns are proposed to characterize the defects. Nine discharge parameters combined with the parameters based on quadrant statistical theory constitute the input feature vector to identify the PD types. The experimental results show that these new parameters could produce a clear, quantitative description of the characteristics of the defect types and could be used to distinguish between the different kinds of defect types.

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“…Hence, it is necessary to study the PD characteristics of floating electrode defects and provide a scientific basis for fault diagnosis. Different detection schemes such as electrical, acoustic [6], and ultrahigh-frequency (UHF) detection [7,8] have been developed over the years to measure PD pulses. Many researchers have studied and developed the UHF method [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Polar coordinate pattern approach to partial discharge on floating electrode defect in GIS

Yao

Yuan

2017

IEEJ Transactions Elec Engng

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This paper proposes a polar coordinate pattern approach to characterize the floating electrode defect in gas‐insulated metal‐enclosed switchgear (GIS). A 220‐kV GIS bus bar cavity is taken as an object to design the physical model of the floating electrode defect. The partial discharge (PD) development process is studied when the applied voltage is gradually increasing. The phase‐resolved partial discharge (PRPD) patterns and the polar coordinate patterns at different voltage levels are accessed through phase‐resolved pulse sequence (PRPS) data in the ultrahigh‐frequency (UHF) measurement. The proposed polar coordinate pattern approach does not use the traditional positive half‐cycle and negative half‐cycle analysis method in the PRPD pattern. It uses the clustering results to analyze the characteristics of the PD. It can be concluded that there are several advantages to the polar coordinate pattern. First, in the polar coordinate pattern, the phase is in a head‐to‐tail arrangement, so the observation of the PD phase characteristics can be more intuitive. Second, the polar coordinate pattern makes the calculated phase median, amplitude median, and centroid meaningful. With the voltage increasing, the variation law of the phase median and centroid can be observed. Third, the discharge parameters, which are based on the quadrant and statistical theory and the cosine similarity proposed in this paper, are from a new point of view. They can make a clear description of the characteristics of the floating electrode defect quantitatively, which can be distinguished from other insulation faults. Additionally, the continuous mode and phase mode at different voltage levels measured by acoustic detection are obtained to further demonstrate the PD development process. The acoustic results agree with the UHF measurement results. The efficiency and rationale of the polar coordinate pattern are further verified. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Research on the Typical Partial Discharge Using the UHF Detection Method for GIS

Cited by 106 publications

References 15 publications

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

Recurrent Neural Network for Partial Discharge Diagnosis in Gas-Insulated Switchgear

A New Discharge Pattern for the Characterization and Identification of Insulation Defects in GIS

Polar coordinate pattern approach to partial discharge on floating electrode defect in GIS

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