scholarly journals Computational Intelligence to Estimate Fault Rates in Power Transformers

2020 ◽  
Author(s):  
Danilo Spatti ◽  
Luisa H.B. Liboni ◽  
Marcel Araújo ◽  
Renato Bossolan ◽  
Bruno Vitti
Keyword(s):  
Computational Intelligence ◽  
Power Transformers

Computational intelligence for preventive maintenance of power transformers

2021 ◽  
pp. 108129
Author(s):  
Shen Yuong Wong ◽  
Xiaofeng Ye ◽  
Fengkai Guo ◽  
Hui Hwang Goh
Keyword(s):  
Computational Intelligence ◽  
Preventive Maintenance ◽  
Power Transformers

scholarly journals Fault Diagnosis of Power Transformers Using Computational Intelligence: A Review

2012 ◽  
Vol 14 ◽  
pp. 1226-1231 ◽  
Author(s):  
Huo-Ching Sun ◽  
Yann-Chang Huang ◽  
Chao-Ming Huang
Keyword(s):  
Fault Diagnosis ◽  
Computational Intelligence ◽  
Power Transformers

A Neural Approach to Evaluate the Effect of Lightning in Power Transformers

2009 ◽  
Vol 10 (4) ◽  
Author(s):  
André Nunes De Souza ◽  
Maria Goretti Zago ◽  
Osvaldo R. Saavedra ◽  
Caio Oba Ramos ◽  
Kleber Ferraz
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Computational Intelligence ◽  
Power Transformers ◽  
Output Variable ◽  
Distribution Transformers ◽  
Voltage Variation ◽  
Maximum Current ◽  
Variation Rate ◽  
Input Variables

This paper proposes the application of computational intelligence techniques to assist complex problems concerning lightning in transformers. In order to estimate the currents related to lightning in a transformer, a neural tool is presented. ATP has generated the training vectors. The input variables used in Artificial Neural Networks (ANN) were the wave front time, the wave tail time, the voltage variation rate and the output variable is the maximum current in the secondary of the transformer. These parameters can define the behavior and severity of lightning. Based on these concepts and from the results obtained, it can be verified that the overvoltages at the secondary of transformer are also affected by the discharge waveform in a similar way to the primary side. By using the tool developed, the high voltage process in the distribution transformers can be mapped and estimated with more precision aiding the transformer project process, minimizing empirics and evaluation errors, and contributing to minimize the failure rate of transformers.

Computational Intelligence

2004 ◽  
Keyword(s):  
Computational Intelligence

Data Driven Analytical Modeling of Power Transformers

2017 ◽  
Vol 10 (2) ◽  
pp. 85
Author(s):  
Jyrki Sakari Penttonen ◽  
Matti Lehtonen
Keyword(s):  
Analytical Modeling ◽  
Data Driven ◽  
Power Transformers

A strategy to locate partial discharges in power transformers using acoustic emission

2007 ◽  
Vol 1 (05) ◽  
pp. 596-600 ◽  
Author(s):  
Giscard Franceire Cintra Veloso ◽  
◽  
Luiz Eduardo Borges da Silva ◽  
Germano Lambert-Torres
Keyword(s):  
Acoustic Emission ◽  
Partial Discharges ◽  
Power Transformers

A Solid-State On-Load Tap Changer for the Power Transformers of 10—0.4 kV Distribution Networks

Vestnik MEI ◽  
2020 ◽  
Vol 6 (6) ◽  
pp. 82-90
Author(s):  
Dmitriy I. Panfilov ◽  
◽  
Mikhail G. Astashev ◽  
Aleksandr V. Gorchakov ◽  
◽  
...  
Keyword(s):  
Solid State ◽  
Physical Model ◽  
High Speed ◽  
Power Transformer ◽  
Voltage Control ◽  
Power Transformers ◽  
Control Algorithms ◽  
Load Voltage ◽  
Tap Changer ◽  
Load Tap Changer

The specific features relating to voltage control of power transformers at distribution network transformer substations are considered. An approach to implementing high-speed on-load voltage control of serially produced 10/0.4 kV power transformers by using a solid-state on-load tap changer (SOLTC) is presented. An example of the SOLTC circuit solution on the basis of thyristor switches is given. On-load voltage control algorithms for power transformers equipped with SOLTC that ensure high reliability and high-speed operation are proposed. The SOLTC performance and the operability of the suggested voltage control algorithms were studied by simulation in the Matlab/Simulink environment and by experiments on the SOLTC physical model. The structure and peculiarities of the used simulation Matlab model are described. The SOLTC physical model design and its parameters are presented. The results obtained from the simulating the SOLTC operation on the Matlab model and from the experiments on the SOLTS physical model jointly with a power transformer under different loads and with using different control algorithms are given. An analysis of the experimental study results has shown the soundness of the adopted technical solutions. It has been demonstrated that the use of an SOLTC ensures high-speed voltage control, high efficiency and reliability of its operation, and arcless switching of the power transformer regulating taps without load voltage and current interruption. By using the SOLTC operation algorithms it is possible to perform individual phase voltage regulation in a three-phase 0.4 kV distribution network. The possibility of integrating SOLTC control and diagnostic facilities into the structure of modern digital substations based on the digital interface according to the IEC 61850 standard is noted.

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