Gradient-based algorithm for the distinction of fault and inrush currents in low power transformers

2021 ◽  
Author(s):  
Robson Fabricio Pinto Moreira ◽  
Vinicius Marins Cleff ◽  
Everton Granemann Souza ◽  
Chiara D. Do Nascimento
Keyword(s):  
Low Power ◽  
Power Transformers ◽  
Gradient Based ◽  
Inrush Currents

A runs test-based method for discrimination between internal faults and inrush currents in power transformers

2010 ◽  
Vol 21 (3) ◽  
pp. 1392-1408 ◽  
Author(s):  
Bahador Fani ◽  
M. E. H. Golshan ◽  
H. A. Abyaneh ◽  
M. Saghaian-nejad
Keyword(s):  
Power Transformers ◽  
Inrush Currents ◽  
Internal Faults

scholarly journals Synchronous Study of Ferroresonance and Inrush Current Phenomena and their Related Reasons in Ground Power Networks

2010 ◽  
Vol 27 (1) ◽  
pp. 82-87 ◽  
Author(s):  
Amin Akrami ◽  
Mohammad Ghaderi ◽  
Saeed Ghadi
Keyword(s):  
Power Transformers ◽  
Inrush Current ◽  
Power Networks ◽  
Transient Phenomena ◽  
Controlled Switching ◽  
Inrush Currents ◽  
Very High ◽  
Inductive Reactance

Synchronous Study of Ferroresonance and Inrush Current Phenomena and their Related Reasons in Ground Power NetworksEnergizing the power transformers usually results in flowing very high inrush currents. This harmful current can be minimized using controlled switching and considering the value of residual flux. But nowadays, developing the ground power networks results in high increment of ferroresonance phenomenon occurrence due to the line' capacitance reactance and nonlinear inductive reactance of power transformer's core. In this study, these transient phenomena and their cause have studied synchronously.

Modelling and Design of HF 200 kHz Transformers for Hard- and Soft-Switching Application

1970 ◽  
Vol 110 (4) ◽  
pp. 7-12 ◽  
Author(s):  
R. Radvan ◽  
B. Dobrucky ◽  
M. Frivaldsky ◽  
P. Rafajdus
Keyword(s):  
Low Power ◽  
Numerical Simulations ◽  
Soft Switching ◽  
Power Transformers ◽  
Leakage Inductance

The paper deals with modelling and design of HF 200 kHz (and more) low-power transformers with determinated leakage induct-ances for both hard- and soft-switching applications. The first group features by small value of the leakage inductance contrary to sec-ond one demanding that value substantially higher. The further aims of the design are minimized weights and dimensions of the trans-formers. Results of numerical simulations and experimental verifications of designed transformers operated in converter circuits are given at the end of the paper. Ill. 13, bibl. 5, tabl. 2 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.276

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