2004•Gaoya dianqiRequires access

Study on the Overvoltage for 110kV Power Supply System with a Long Line

Yadong Gao

Abstract

The computation of power frequen cy overvoltage and switching overvoltage in a model of110kV transmission network w ith a long line by software EMTP is presented in this paper.The results show tha t the power frequency overvoltage and switching overvoltage are all within the limita-tion of design criteria if the line is around200km,so it needs no speci al means to limit these overvoltages except some shunt reactors added on the lin e.

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Key concepts: Overvoltage, Electrical engineering, Emtp, Transmission line, Line (geometry), Electric power system, Electric power transmission, Power (physics)