Research Progress and Prospect of Condition Assessment Techniques for Oil–Paper Insulation Used in Power Systems: A Review

Z Jiang, X Li, H Zhang, E Zhang, C Liu, X Fan, J Liu - Energies, 2024 - mdpi.com
Oil–paper insulation is the critical insulation element in the modern power system. Under a
harsh operating environment, oil–paper insulation will deteriorate gradually, resulting in …

Towards automated statistical partial discharge source classification using pattern recognition techniques

H Janani, B Kordi - High Voltage, 2018 - Wiley Online Library
This study presents a comprehensive review of the automated classification in partial
discharge (PD) source identification and probabilistic interpretation of the classification …

Assessment of interfacial charge accumulation in oil-paper interface in transformer insulation from polarization-depolarization current measurements

D Mishra, N Haque, A Baral… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
Accumulation of interfacial space charge in oil-paper interface is a critical issue in insulation
diagnostics of transformers. This interfacial charge mainly accumulates due to the …

A modified simulation model for predicting the FDS of transformer oil-paper insulation under nonuniform aging

J Liu, T Sun, X Fan, Y Zhang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The influence of nonuniform aging has not been considered in the prediction of the
frequency domain spectroscopy (FDS) of the transformer oil-paper insulation (OPI) when …

Acquisition of FDS for oil-immersed insulation at transformer hotspot region based on multiconstraint NSGA model

X Fan, J Liu, HH Goh, Y Zhang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The evaluation of the state of transformer oil-immersed insulation based on the traditional
methods becomes unreliable due to the nonuniform aging effect. To address this issue, a …

Application of Cole–Cole model to transformer oil‐paper insulation considering distributed dielectric relaxation

SK Ojha, P Purkait, B Chatterjee, S Chakravorti - High Voltage, 2019 - Wiley Online Library
Researchers have been exploring dielectric testing techniques both in time and frequency
domain for insulation condition assessment of oil‐paper insulated transformers. In a …

Condition assessment of cellulosic part in power transformer insulation using transfer function zero of modified Debye model

A Baral, S Chakravorti - IEEE Transactions on Dielectrics and …, 2014 - ieeexplore.ieee.org
Analysis of Polarization-Depolarization Current, recorded from high voltage oil-paper
insulation using insulation model is common among researchers. It is reported that paper …

Reinforcement Learning-Based Genetic Algorithm for Aging State Analysis of Insulating Paper at Transformer Hotspot

Z Jiang, J Liu, X Fan, Q Wang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The aging state evaluation of insulating paper at the transformer hotspot is a pain point in
the industry. To address this issue, the modified dielectric response (MDR) model and the …

Aging analysis of transformer insulation at weakest region: Dielectric parameters extraction via immune optimization

X Fan, J Liu, HH Goh, Y Zhang, T Wu… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The conventional method is insufficient for determining the worst aging state of traction
transformer oil-paper insulation due to the nonuniform aging. To address this issue, an …

Prediction of moisture present in cellulosic part of power transformer insulation using transfer function of modified Debye model

A Baral, S Chakravorti - IEEE Transactions on Dielectrics and …, 2014 - ieeexplore.ieee.org
Polarization-Depolarization Current (PDC) analysis is a well known technique for condition
monitoring of oil-paper insulation in power transformers. However, due to variation in …