PD Characteristics in Transformer Oil under AC Condition

Ji Chong Liang; Tian Zheng Wang; Kang Ning Wang; Jun Hao Li

doi:10.4028/www.scientific.net/AMM.492.186

Paper Titles

The Simulation Study of Transformer Inductive Oscillating Switching Impulse Voltage Generation
p.169

Research on the Failure Prediction of Electrical Connectors at High Temperature
p.173

Research on an Accident of 500 kV Gas Insulated Transmission Line
p.178

Management System of Transmission Line Passage Protection Based on Web Map Service
p.182

PD Characteristics in Transformer Oil under AC Condition
p.186

Research on Low-Temperature Reliability of Electrical Connectors
p.190

Study on Failure Frequency of Sensitive Equipment Caused by Voltage Sag
p.195

Evaluation of Voltage Sag Mitigation by Resonant Grounding Comparing to Existing Direct Grounding in Provincial Electricity Authority
p.201

Research on an Online Monitoring and Diagnosis System of High-Voltage Circuit Breaker
p.212

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 492PD Characteristics in Transformer Oil under AC...

PD Characteristics in Transformer Oil under AC Condition

Abstract:

Partial discharge (PD) detection is a technique widely used for high voltage equipment insulation condition assessment. The metal protrusion is a situation that often appear in transformer. Metal protrusion will cause the electric field concentration and lead to partial discharge. In this paper, PD characteristics in transformer oils are examined under AC conditions, using a needle-to-plane electrode system. The PD activity in transformer oil is confirmed as appearing in pulse burst form and the PD number and amplitude will increase with the applied voltage increase. The PRPD pattern display behavior typical of corona PD in oil.