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Cost Effective Design of High Voltage Impulse Generator and Modeling in Matlab

  • Javid, Zahid ;
  • Li, Ke-Jun ;
  • Sun, Kaiqi ;
  • Unbreen, Arooj
  • Received : 2017.08.02
  • Accepted : 2018.01.10
  • Published : 2018.05.01

Abstract

Quality of the power system depends upon the reliability of its components such as transformer, transmission lines, insulators, circuit breakers and isolators. The transient voltage due to internal or external reasons may affect the insulation level of the components. The insulation level of these components must be tested against these conditions. Different studies, testing of different electrical components against high voltage impulses and different industrial applications rely on the international manufactures for pulsed power generation and testing, that is quite expensive and large in size. In this paper a model of impulse voltage generator with capacitive load of pin type insulator is studied by simulation method and by an experimental setup. A ten stage high voltage impulse generator (HVIG) is designed and implemented for different applications. In this proposed model, the cost has been reduced by using small and cheap capacitors as an alternative for large and expensive ones while achieving the same effectiveness. Effect of the distributed capacitance in each stage is analyzed to prove the effectiveness of the model. Different values of front and tail resistances have been used to get IEC standard waveforms. Results reveal the effectiveness at reduced cost of the proposed model.

Keywords

Capacitive energy storage;Dielectric breakdown;Impulse testing;Insulation testing;Voltage multiplier

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Acknowledgement

Supported by : National Natural Science Foundation of China (NSFC)