Simulation of switching overvoltages in the mine electric power supply system

International Conference on Mechanical Engineering, Automation and Control Systems 2016

机械制造;无线电电子学;计算机科学

Ivanchenko, D.I.^1 ; Novozhilov, N.G.^1

Department of Electrical Engineering, Saint-Petersburg Mining University, 2, 21st Line, St Petersburg

199106, Russia^1

关键词: Current chopping;    Electric power supply;    Electrical machine;    Fire and explosion;    Insulation degradation;    Switching overvoltages;    Transient recovery voltage;    Vacuum circuit breaker;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/177/1/012070/pdf
DOI  :  10.1088/1757-899X/177/1/012070

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Overvoltages occur in mine power supply systems during switching off consumers with high inductive load, such as transformers, reactors and electrical machines. Overvoltages lead to an increase of insulation degradation rate and may cause electric faults, power outage, fire and explosion of methane and coal dust. This paper is dedicated to simulation of vacuum circuit breaker switching overvoltages in a mine power supply system by means of Simulink MATLAB. The model of the vacuum circuit breaker implements simulation of transient recovery voltage, current chopping and an electric arc. Obtained results were compared to available experimental data.