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Insulation Coordination of a UHV AC Transmission Line Considering the Switching Overvoltage Waveshape


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1 Department of Electrical and Electronics Engineering, Mahatma Gandhi Institute of Technology, Hyderabad – 500075, India
     

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This paper presents the determination of insulation coordination for phase-to-ground switching over voltages by a practical method in which the effect of the switching overvoltage waveshape, especially the impact of the time to crest on insulation strength is considered. This work is carried out on the world’s first 1200 kV transmission line by modelling it in PSCAD.

Keywords

Insulation-Coordination, Line Energization, Line Re-Energization, SSFOR, UHV AC Transmission.
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  • Insulation Coordination of a UHV AC Transmission Line Considering the Switching Overvoltage Waveshape

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Authors

A. Ramchandra Reddy
Department of Electrical and Electronics Engineering, Mahatma Gandhi Institute of Technology, Hyderabad – 500075, India

Abstract


This paper presents the determination of insulation coordination for phase-to-ground switching over voltages by a practical method in which the effect of the switching overvoltage waveshape, especially the impact of the time to crest on insulation strength is considered. This work is carried out on the world’s first 1200 kV transmission line by modelling it in PSCAD.

Keywords


Insulation-Coordination, Line Energization, Line Re-Energization, SSFOR, UHV AC Transmission.

References





DOI: https://doi.org/10.33686/prj.v18i2.222168