Results 1 to 10 of about 147 (112)

Winding Hottest-Spot Temperature Analysis in Dry-Type Transformer Using Numerical Simulation

Energies, 2018
A thermal analysis of a 5 kVA dry-type transformer under linear and non-linear loads conditions is studied in this paper. The main goal here is to calculate the hottest-spot transformer temperature under free convection through the resolution of the heat
Rafael Gonçalves Mafra, Elisan dos Santos Magalhães, Bruno de Campos Salles Anselmo, Fernando Nunes Belchior, Sandro Metrevelle Marcondes Lima e Silva   +4 more
doaj   +2 more sources

Study on the Electric Field Distribution Characteristics of 66 kV Dry-Type Transformer Based on Functional Graded Material (FGM) Treatment

Energies
Functional graded materials (FGMs) have been successfully applied for improving the insulation performance of insulators, yet there is currently no relevant literature on their application in dry-type transformers.
Xinhan Qiao, Jianwen Zhang, Dongdong Zhang   +2 more
exaly   +3 more sources

Investigating temperature rise dynamics at hot-spots within dry-Type transformer windings: A comparative analysis across varied loading rates and an extrapolative computational model

Case Studies in Thermal Engineering
The dynamic temperature data of a transformer can be utilized to accurately assess its load capability and operational longevity. This paper presents a study on the temperature rise characteristics of hot-spots in dry-type transformer windings and ...
Dongsheng He
exaly   +3 more sources

Method of building transformer acoustic diagnosis database based on multi physical field coupling modeling [PDF]

E3S Web of Conferences, 2021
In this paper, a method of building dynamic acoustic diagnosis database of dry-type transformer is proposed. The method is mainly combined with collecting the basic noise of transformer and simulating the acoustic signals of transformer under different ...
Wu Weidong, Wu Zhengyang, Guo Shouchun, Lu Yulin, Ma Li, Wang Qinghua   +5 more
doaj   +1 more source

Deconvolution Beamforming Algorithm Based Abnormal Noise Fault Identification of Dry-Type Transformer

Zhongguo dianli, 2022
To improve the accuracy of the conventional beamforming location algorithm, the deconvolution beamforming algorithm is proposed for the abnormal noise fault identification of dry-type transformer.
Hailong BAO, Yuying SHAO, Xiao WANG, Peng PENG, Guogang YUAN, ZHUANG Beini   +5 more
doaj   +1 more source

A PCA-LSTM-Based Method for Fault Diagnosis and Data Recovery of Dry-Type Transformer Temperature Monitoring Sensor

Applied Sciences, 2022
The failure that occurs during the dry-type transformer temperature monitoring sensor working will result in wrong data output, which may cause the monitor and monitoring background to respond incorrectly.
Mingze Zheng, Kun Yang, Chunxue Shang, Yi Luo   +3 more
doaj   +1 more source

Application of Thermography and Adversarial Reconstruction Anomaly Detection in Power Cast-Resin Transformer

Sensors, 2022
Dry-type power transformers play a critical role in the power system. Detecting various overheating faults in the running state of the power transformer is necessary to avoid the collapse of the power system.
Kuo-Hao Fanchiang, Cheng-Chien Kuo
doaj   +1 more source

Development of system of on-line monitoring, fault diagnosis and prewarning for insulation of mine-used dry-type transformer

Gong-kuang zidonghua, 2013
In view of problems that monitoring variable is single and real-time status of insulation of mine-used dry-type transformer cannot be reflected existed in traditional monitoring method of mine-used dry-type transformer because it uses thermocouple to ...
WAN Zhi-qiang, SONG Jian-cheng, LEI Zhi-peng, WEN Min-min, LI Chuan-yang   +4 more
doaj   +1 more source

Influence of partial discharge on temperature rise of windings of mine-used flameproof dry-type transformer

Gong-kuang zidonghua, 2018
In order to analyze influence of air gaps or impurities in insulation layer on temperature rise of windings of mine-used flameproof dry-type transformer, a mine-used 1 000 kVA/10 kV dry-type transformer with continuous winding was selected as research ...
WAN Zhiqiang, CAO Penggang, SONG Jiancheng, LEI Zhipeng   +3 more
doaj   +1 more source

Inter-Turn Breakdown Fault Analysis and Winding Structure Optimisation of Winding of Dry-Type Transformers in Wind Farms

Energies, 2023
To address the problem of winding turn-to-turn breakdown faults in 35 kV dry-type transformers in wind farms under overvoltage conditions, this paper establishes a simulation model based on the structural dimensions and material parameters of the ...
Ziheng Pu, Xinyun Yu, Yaoqiang Wang, Hao Liu, Zihao Feng   +4 more
doaj   +1 more source