Iterative method for partial discharges location in power transformers

S Didouche, A Nacer, A Ziani, H Moulai… - Electric Power Systems …, 2022 - Elsevier
In this paper an efficient and fast iterative method has been successfully used for detection
and localization of partial discharges in a power transformer. It is mainly based on finite …

Modelling of acoustic wave propagation due to partial discharge and its detection and localization in an oil-filled distribution transformer

SN Meitei, K Borah, S Chatterjee - Frequenz, 2020 - degruyter.com
Partial discharge (PD) is the main cause of the insulation decay and hence periodical testing
of the insulation condition of a distribution transformer is necessary. This paper presents a …

Simulation of Ultrasonic Propagation in Transformers within Thermal Fields and Intelligent Methodology for Hot-spot Temperature Recognition

D He, D Yang, X Guo, J Liu, H Guo, Q Li… - Chinese Journal of …, 2024 - ieeexplore.ieee.org
Hot-spot temperature of transformer windings is a crucial indicator of internal defects.
However, current methods for measuring the hot-spot temperature of transformers do not …

Analysis of the Magnetic Properties of Ultra-Thin Grain-Oriented Silicon Steel and Fe-Based Amorphous Alloys from Power Frequency to Intermediate Frequency

G Ma, L Cheng, Y Han, C He - Applied Sciences, 2024 - mdpi.com
The magnetic properties of a 0.10 mm ultra-thin, grain-oriented (UTGO) silicon steel and an
Fe-based amorphous (FBA) alloy under sinusoidal excitation were experimentally …

Energy mechanism analysis for chaotic dynamics of gyrostat system and simulation of displacement orbit using COMSOL

G Qi, L Xu, X Yang - Applied Mathematical Modelling, 2021 - Elsevier
Most of the existing research on gyrostat systems uses the Melnikov method to analyze
chaotic dynamic characteristics. The mechanism of chaotic motion from the energy …

A method for hot spot temperature monitoring of oil-immersed transformers combining physical simulation and intelligent neural network

Y Luo, L Wang, J Jiang, D Li, H Xu… - 2023 3rd Power …, 2023 - ieeexplore.ieee.org
The hot spot temperature (HST) of oil-immersed power transformers is closely related to their
service life, so it is critical to accurately assess the HST. Currently, the existing methods for …

[HTML][HTML] Calculation and research of hotspot temperature analysis of converter transformer

J Wu, K He - AIP Advances, 2024 - pubs.aip.org
This study aims to propose a thermal loop model-based simulation and analysis method for
predicting the hotspot temperature of converter transformers in Ultra-High Voltage Direct …

Finite element method based modelling and analysis of partial discharge acoustic wave propagation in an oil-filled power transformer

SN Meitei, K Borah, S Chatterjee - 2019 IEEE 4th International …, 2019 - ieeexplore.ieee.org
This paper presents an analysis of acoustic pressure wave distribution in a power
transformer due to partial discharge (PD) using the finite-element-method (FEM) based …

[PDF][PDF] Multiphysics Modelling And Thermal Performance Of A Prototype Transformer Filled With Bio-Based Insulating Oil Under Various Load Conditions

BBB Tchounga, GM Mengounou, ET Nkouetcha… - International …, 2022 - academia.edu
Before designing and engineering an environmentally friendly immersion transformer, it is
important to consider its thermal performance. Increasingly bio-based insulating oil develops …

Modeling the Temperature of the Distribution Transformer Oil Using Transformer Body Temperature and Power Quality Parameters Based on Artificial Neural Network

A Tjahjono, WA Septian, NW Rika… - … on Technologies and …, 2019 - ieeexplore.ieee.org
Existing distribution transformers that supply electricity to customers are generally not
equipped with temperature sensors. This causes these transformers to be prone to damages …