The Investigation of Detect Position of Partial Discharge in Cast-Resin Transformer Using High-Frequency Current Transformer Sensor and Acoustic Emission Sensor
Source abstract
Abstract
The lifetime of a cast-resin transformer mainly depends on the condition of insulation material. Partial discharge (PD) is an important reason for insulation deterioration in cast-resin transformers. Identifying the position of PD is very necessary for damage assessment while the transformer is still operating, and the transformer is covered by housing. This paper proposes the investigation of a cast-resin transformer using an AE sensor and HFCT sensor to specify the precise source of PD. In this study, four AE sensors were used to find PD sources, and the high-frequency current transducer (HFCT) technique was used to identify the PD source and the criteria level. The experiment, in the first two parts, identified the possibility of PD, which includes the position of PD. The final part of the experiment verified the position of the PD source of a cast-resin transformer and confirmed the inspection results. AE and HFCT sensors can be used to detect the location of PD sources, confirming the position of the PD source by sensor detection. In addition, the evident partial discharge picture on the insulator surface of high voltage side. The process successfully and accurately identifies and locates the PD source.
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Research context
OpenAlex topics: High voltage insulation and dielectric phenomena · Power Transformer Diagnostics and Insulation · Geophysical Methods and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical Engineering, Dhonburi Rajabhat University Samut-Prakan, Samut-Prakan 10540, Thailand
Plasma and Electrical Discharge Laboratory, Faculty of Industrial Education and Technology, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
Advanced Power Equipment (Thailand), Co., Ltd., Bangkok 10510, Thailand
Faculty of Industrial Technology, Nakhonphanom University, Nakhonphanom 48000, Thailand
School of Industrial Technology, Faculty of Science and Technology, Pathumwan Institute of Technology, Bangkok 10330, Thailand
Faculty of Education and Culture, University of Miyazaki, Miyazaki 889-2192, Japan
Department of Engineering, University of Miyazaki, 1-1 Gakuen-Kinabanadai-Nishi, Miyazaki 889-2192, Japan
References (29)
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