Comparison of Partial Discharge Performance of Identical Generator Transformers in a Thermal Power Station by Acoustic Emission Technique - Case Studies

Shanker, T. Bhavani; Vaidhyanathan, V.; Mohamed, Azah

doi:10.1109/ichvet.2019.8724340

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…The detection process involves initially conducting offline dissolved gas analysis (DGA) to assess the gas content, followed by implementing acoustic emission (AE) detection for a duration of 24 h to identify the sources of PD. This approach aims to replicate the daily load cycle and has been documented in reference [95]. An example of the integration of acoustic emission (AE) and dissolved gas analysis (DGA) methods is photo-acoustic spectroscopy (PAS).…”

Section: Combinational Methodsmentioning

confidence: 99%

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Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review

Faizol,

Zubir,

Saman

et al. 2023

Applied Sciences

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The detection of partial discharge (PD) activities in high-voltage equipment can be conducted according to several mechanisms of signal detection, including electromagnetic wave signal detection, acoustic signal detection, chemical reactions, electrical signal detection, and optical emission detection. Recently, multiple methods of detection and localization of partial discharge activities, which occurred in power transformers and gas-insulated switchgear (GIS), have been proposed to monitor the health condition of high-voltage equipment, especially when the awareness regarding preventive maintenance has been emphasized at the industrial level and among electrical providers. In aligning the needs of the industrial sector and the improvement of PD-detection methods, this manuscript focuses on reviewing the current practice methods for the detection and localization of PD signals in high-voltage equipment, comparing their efficacy, and summarizing the future direction of research work-related methods of PD detection. The comparative reviews are discussed in terms of the mechanism of PD signal detection, indication parameters, calibration techniques, and the advantages and limitations of each method of PD measurement in detail.

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Section: Combinational Methodsmentioning

confidence: 99%

“…the sources of PD. This approach aims to replicate the daily load cycle and has been documented in reference [95]. An example of the integration of acoustic emission (AE) and dissolved gas analysis (DGA) methods is photo-acoustic spectroscopy (PAS).…”

Section: Combinational Methodsmentioning

confidence: 99%

Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review

Faizol,

Zubir,

Saman

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…For the detection and localization of PD faults in power transformers, the combination of DGA and AE methods has been used. For the existence of PD in transformers, offline DGA has been implemented first, then to locate PD sources, AE detection for 24 hours has been implemented for copying the daily load cycle [116]. Photo-Acoustic Spectroscopy (PAS) is an example of a combination of the DGA and AE method.…”

Section: E Combinational Methodsmentioning

confidence: 99%

Overview and Partial Discharge Analysis of Power Transformers: A Literature Review

2021

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“…The relation between the dissolved gases in the oil and the AET method is investigated too. The results of the dissolved gas analysis are compared with the results of AET, and it is shown that with the growth of the hydrogen amount in the oil due to PD, the amplitude of the acoustic signal increases [40]. As a result, other indicators of PD can be combined with the acoustic method to improve its reliability.…”

Section: General Considerationmentioning

confidence: 99%

Applications of the Acoustic Method in Partial Discharge Measurement: A Review

Ilkhechi

Samimi

2021

IEEE Trans. Dielect. Electr. Insul.

102

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This paper reviews the main features of acoustic emission technique. First, the characteristics of acoustic signals and their physics are addressed. Then, the structure of acoustic sensors employed for capturing signals is studied. In the next step, the acoustic method of PD measurement is compared with the standard electrical method. Afterward, the applications of AET in PD measurement in different equipment are summarized. All acoustic method and combined acoustic-electrical method for PD localization in transformers are discussed. Moreover, the applications of AET in the monitoring of GIS systems are explained, along with the acoustic behaviors of moving particles in these systems. Finally, the general considerations in the signal processing of the acoustic signals are reviewed.

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Comparison of Partial Discharge Performance of Identical Generator Transformers in a Thermal Power Station by Acoustic Emission Technique - Case Studies

Cited by 7 publications

References 5 publications

Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review

Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review

Overview and Partial Discharge Analysis of Power Transformers: A Literature Review

Applications of the Acoustic Method in Partial Discharge Measurement: A Review

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