Investigation of the Relationship between Impulse Pre-stress and Subsequent AC Partial Discharge

The primary objective of this study is to elucidate the mechanism of insulation degradation in cast resin transformers subjected to surge stress. To achieve this, it is essential to quantitatively assess the relationships among impulse pre-stress, subsequent AC partial discharge (PD) characteristics...

Full description

Saved in:
Bibliographic Details
Main Authors: Nagatani, Yuri, Miyazaki, Koki, Kozako, Masahiro, Hikita, Masayuki, Miyake, Hiroaki, Tanaka, Yasuhiro, Fujii, Yuuki, Nakamura, Yusuke, Ito, Daiki, Nakamae, Tetsuo, Oyama, Kimiharu, Ozaki, Tamon
Format: Conference Proceeding
Language:English
Subjects:
balance of charge
cast resin transformer
charge accumulation
Degradation
impulse pre-stress
Insulation
partial discharge
Partial discharge measurement
Partial discharges
Power transformer insulation
Resins
Space charge
Stress
Surface discharges
Surges
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The primary objective of this study is to elucidate the mechanism of insulation degradation in cast resin transformers subjected to surge stress. To achieve this, it is essential to quantitatively assess the relationships among impulse pre-stress, subsequent AC partial discharge (PD) characteristics, and the degree of material degradation. In this paper, impulse pre-stress and subsequent AC PD characteristics were measured on void specimens. The results quantitatively demonstrate the relationship between the impulse PD charge and the total subsequent AC PD charge.
ISSN:2644-271X
DOI:10.23919/CMD62064.2024.10766165