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Fault Diagnosis Method for Excitation Dry-Type Transformer Based on Multi-Channel Vibration Signal and Visual Feature Fusion. [PDF]

Sensors (Basel)
Liu Y, Yu M, Wang J, Bao P, Zu W, Deng Y, Chen S, Ma L, Zhao P, Dou J.   +9 more
europepmc   +1 more source

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A New Testing Method for the Dielectric Response of Oil-Immersed Transformer

IEEE Transactions on Industrial Electronics, 2020
Oil-immersed transformer is one of the most important electrical equipment in power distribution and transmission systems. Dielectric response method is a well-recognized method to diagnose the insulation defect of oil-immersed transformers. However, the applicability of this method is restricted due to the long testing time.
Junfei Jiang, Zhi-Xin Yang
exaly   +5 more sources

Dielectric Response Analysis of Mineral Oil Immersed Transformer, Natural Ester(FR3) Immersed Transformer, and Palm Oil Immersed Transformer

2019 IEEE 20th International Conference on Dielectric Liquids (ICDL), 2019
Currently alternative liquid insulation such as natural ester (FR3) is widely used as distribution transformer insulation because it provides outstandingly dielectric characteristics and natural friendly including highly affordable fire safety.
Sakda Maneerot, Phethai Nimsanong, Jompatara Siriworachanyadee, Monthon Leelajindakrairerk, Kittipod Jariyanurat, Norasage Pattanadech   +5 more
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Fault diagnosis of oil-immersed transformer based on MGTO-BSCN

Journal of Intelligent & Fuzzy Systems, 2023
In order to improve the accuracy and reliability of fault diagnosis of oil-immersed power transformers, a fault diagnosis method based on the Modified Artificial Gorilla Troops Optimizer (MGTO) and the Stochastic Configuration Networks with Block Increments (BSCN) is proposed.
Lingzhi Yi, Jiao Long, Jianxiong Huang, Xunjian Xu, Wenqing Feng, Haixiang She   +5 more
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Eco-design in Oil Immersed Transformers

2017
All electrical products, and even all products, have an impact on the environment because of its production, its activity and the end of its active life. Power transformers are one of the most important components of the electrical system and the impact they produce has to be taking into account because of the materials they are composed by and their ...
Pablo Cirujano, Enrique Otegui
openaire   +1 more source

Transient moisture equilibrium in oil-immersed transformer

2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, 2009
The final goal of the paper is to establish a transient moisture equilibrium model for estimating the moisture in paper of the running oil-immersed transformer. To this end, the presented model for oil-paper insulation is improved according to the insulation structure of oil-immersed transformer.
Lijun Zhou, Guangning Wu, Jun Liu, Guo Ma, Wei Lv, Tao Wang, Zhongbao Gao   +6 more
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Application of dielectric response for oil-immersed transformer

2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, 2009
Reliability of large oil-immersed power transformers is attracting more and more attention by the power system, and a lot of new test methods are being under research. In this paper, the dielectric response for oil-immersed transformer insulation condition and ageing diagnosis is introduced; a 220kV transformer was measured utilizing frequency domain ...
Shuangsuo Yang, Ming Dong, Guanjun Zhang, Zhi Zhang   +3 more
openaire   +1 more source

Safe Loading of Oil-Immersed Transformers

Transactions of the American Institute of Electrical Engineers, 1929
An attempt is made to describe simply and clearly the basis of the temperature rating of oil-immersed transformers and the relations between the temperatures measured in service, the maximum safe output rating, and the national standard ratings. A description is given of an instrument for indicating the safe output rating of a transformer in service ...
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A transformer design optimisation tool for oil immersed distribution transformers

2015 Moratuwa Engineering Research Conference (MERCon), 2015
This paper presents a methodology to design hermetically sealed shell type oil immersed distribution transformers with minimum evaluated cost according to the IEC standards. Distribution transformer model and design constraints are implemented as a user friendly software using MATLAB.
R. P. W. S. Amarasinghe, W. G. K. P. Kumara, R. A. K. G. Rajapaksha, R. A. D. K. Rupasinghe, W. D. A. S. Wijayapala   +4 more
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Studies of Electrical and Thermal Characteristics of Natural Ester Immersed Transformer Compared with Mineral Oil Immersed and Palm Oil Immersed Transformer

2018 Condition Monitoring and Diagnosis (CMD), 2018
This paper represents studies of electrical and thermal characteristics of natural ester immersed transformer compared with mineral oil immersed and palm oil immersed transformer by designing and constructing three single-phase transformers with rated 400/1000V 10kVA, the first transformer used mineral oil, the second transformer used natural ester ...
S. Maneerot, K. Jariyanurat, P. Nimsanong, C. Bunlaksananusor, A. Kunakorn, N. Pattanadech   +5 more
openaire   +1 more source