Results 1 to 10 of about 433 (255)

Analysis and Online Testing of the Transformer Winding Deformation

Procedia Engineering, 2012
AbstractThe theory analyses by using finite element method show that winding deformation would inevitably lead to the changes of three-phase transformer's magnetic field. Once short-circuit faults happened, the three-phase transformer winding distortions and distortion location can be quickly detected through analyzing the spectrum correlation ...
Liu, Baobin, Zhou, Wei
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Analysis of the Electromechanical Characteristics of Power Transformer under Different Residual Fluxes

Energies, 2021
When the electromagnetic transients occur in a power transformer, an inrush current is generated in its winding. The inrush current not only affects the performance of the transformer windings, but also affects the lifetime of the transformer.
Wenqi Ge, Chenchen Zhang, Yi Xie, Ming Yu, Youhua Wang   +4 more
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SFRA, Detect Of Winding Deformation in Power Transformer

IOSR Journal of Electrical and Electronics Engineering, 2014
The sweep frequency response analysis is extensively used technique for detect hidden fault and condition monitoring of power transformer. The operation is carried out by supply a low voltage signal of varying frequencies to the transformer windings and measuring both the input and output signals.
Shivangi Rai, (Prof.) N.P Gupta
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An Experimental Study of the Sweep Frequency Impedance Method on the Winding Deformation of an Onsite Power Transformer

Energies, 2020
Power transformers are one of the most important devices in electrical networks. The safety operation of the transformers directly affects the reliability of the power system. To diagnose the internal deformation of the transformer as soon as possible is
Song Wang, Shuang Wang, Ying Cui, Jie Long, Fuqiang Ren, Shengchang Ji, Shuhong Wang   +6 more
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Axial and radial electromagnetic‐vibration characteristics of converter transformer windings under current harmonics

High Voltage, 2023
The winding current harmonic content of converter transformer in operation is rich. However, affected by harmonics, the radial vibration characteristics are quite different from the power transformer, structural loosening and deformation caused by ...
Peiyu Jiang, Zhanlong Zhang, Zijian Dong, Yu Yang, Zhicheng Pan, Jun Deng   +5 more
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Evaluation on mechanical stability of transformer windings based on vibration detection

Zhejiang dianli, 2022
Insufficient mechanical stability of transformer winding is the leading cause of equipment accidents. Scientific evaluation of its mechanical stability is of positive significance for reducing equipment accidents and improving maintenance pertinence ...
HE Wenlin, ZHENG Yiming
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Classifying Transformer Winding Deformation Fault Types and Degrees Using FRA Based on Support Vector Machine

IEEE Access, 2019
As an important part of power system, power transformer plays an irreplaceable role in the process of power transmission. Diagnosis of transformer's failure is of significance to maintain its safe and stable operation.
Jiangnan Liu, Zhongyong Zhao, Chao Tang, Chenguo Yao, Chengxiang Li, Syed Islam   +5 more
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Evaluation of the Capacitance State of Autotransformer Based on TCN and LSTM Network Structures

Modelling and Simulation in Engineering
This study introduces a method to evaluate the capacitance state of transformer windings using TCN and LSTM network structures, to solve the problem of winding deformation caused by factors such as insulation structure, ambient temperature, operating ...
ZiBin Li, Jinpeng Yuan, Wande Lin, Hui Wu, Lili Wang, Weijun Liu, HongLiang Zhang   +6 more
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Using MLP to locate transformer winding fault based on digital twin

Frontiers in Energy Research, 2023
There is no doubt that transformer plays a fundamental role in power system. At the same time, transformer winding fault diagnosis is an important topic.
Jiangnan Liu, Chenguo Yao, Liang Yu, Shoulong Dong, Yu Liu   +4 more
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Parameter Identification Method for Transformer Winding Equivalent Networks Based on Frequency Response Analysis: A Comparative Study

Energies
Transformers are essential power transformation equipment in power systems. Winding deformation is one of the main forms of transformer winding faults, which may cause performance degradation or even overall damage to the equipment.
Ran Zhu, Fuqiang Ren, Zhaoyang Kang, Yonghao Zhang, Shujun Liu, Kaining Hou, Hongbin Wu, Jiawen Wang, Hongshun Liu, Qingquan Li   +9 more
doaj   +1 more source