alexa On Necessity of Taking into Consideration Arc Resistan
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

On Necessity of Taking into Consideration Arc Resistance at Simulation Switching Transients in Electric Power Systems

T. Lazimov1, E. Saafan 2
  1. Professor & Head, Department of Electric Supply and Insulation, Technical University of Azerbaijan, Baku, Azerbaijan
  2. Lecturer, Department of Electrical Engineering, Faculty of Engineering, University of El-Mansoura, Mansoura, Egypt
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This paper presents results of research an influence of arc resistance in circuit-breakers on transitional processes have taken place at switching-offs capacitive and small inductive currents by vacuum and SF6 circuitbreakers. Simulation models include the main characteristics of circuit-breakers such as chop current, dielectric strength restoration law and switching duration. Simulations were carried out using methods and simulation parameters provided stable solutions for transitional functions of voltages and currents. Results obtained proved expediency taking into consideration the arc resistance at modeling and computer simulation of processes under consideration at least for switching-off small inductive currents by SF6 circuit-breakers and capacitive currents by vacuum circuit-breakers.


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