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Study on grasping partial discharge development using an acoustic emission technique


Affiliations
1 Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan
     

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To investigate the stage development of Partial Discharge (PD) for Ethylene Propylene (EP) rubber used for insulation material of joint and terminal sections of cross-linked polyethylene (XLPE) cable, we focused on the magnitude of PD and the cumulative number of PDs per unit time. It was difficult to grasp the stage development of PD by temporal variations in Acoustic Emission (AE) signal intensity and the number of counted AE signals because they contained periods during which PD activity was not high even before breakdown occurred. In contrast, the cumulative number of AE signals could clearly show a point of time when a PD might form a pit or a tree in EP.

Keywords

Condition monitoring and diagnostics, partial discharge, solid dielectrics
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  • Study on grasping partial discharge development using an acoustic emission technique

Abstract Views: 250  |  PDF Views: 0

Authors

Tatsuya Sakoda
Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan
Toshiki Hirashima
Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan
Tomoya Nakamura
Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan
Yugo Shirahama
Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan
Noriyuki Hayashi
Department of Electrical and Systems Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan

Abstract


To investigate the stage development of Partial Discharge (PD) for Ethylene Propylene (EP) rubber used for insulation material of joint and terminal sections of cross-linked polyethylene (XLPE) cable, we focused on the magnitude of PD and the cumulative number of PDs per unit time. It was difficult to grasp the stage development of PD by temporal variations in Acoustic Emission (AE) signal intensity and the number of counted AE signals because they contained periods during which PD activity was not high even before breakdown occurred. In contrast, the cumulative number of AE signals could clearly show a point of time when a PD might form a pit or a tree in EP.

Keywords


Condition monitoring and diagnostics, partial discharge, solid dielectrics



DOI: https://doi.org/10.33686/prj.v13i1.189200