Title :
Overvoltages under asymmetrical condition on very high voltage overhead transmission lines
Author :
Ioan, Stefania ; Hurdubetiu, Sorin ; Self, Andrew
Author_Institution :
Bucharest Politehnica Univ., Romania
Abstract :
The paper presents a study regarding very high voltage overhead lines operating in asymmetrical conditions due to ground faults. The overvoltage factor is obtained by modeling the polyphase network with the mathematical apparatus of the theory of symmetrical components and with EMTP. For a single phase ground fault and reclosing on remanently charged line, a distinct influence is noted when modeling with and without consideration of the magnetization curve of the transformer, or considering corona discharge
Keywords :
power overhead lines; VHV overhead transmission lines; asymmetrical condition overvoltages; corona discharge; ground faults; mathematical apparatus; overvoltage factor; polyphase network modelling; reclosing; remanently charged line; single phase ground fault; transformer magnetization curve;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990545
