Temporary overvoltages in the Vietnam 500 kV network

Author

Lam-Du, S. ; Tran-Quoc, T. ; Feuillet, R. ; Sabonnadiere, J.C. ; Nguyen, Quang

Author_Institution

HCM City Electr. Co., Ho Chi-Minh

Volume

1

fYear

1998

fDate

3-5 Mar 1998

Firstpage

275

Abstract

This paper investigates the temporary overvoltages (TOV) in the Vietnam 500 kV system. The modeling of transformers, lines and other elements in the Vietnam system is presented. Several events that can produce high TOV levels, such as three-phase load rejections, single-phase opening with the outage of a shunt reactor, the bypassing of a series capacitor or the disconnecting of a transformer, etc., are examined with the help of the EMTP program. Finally, the methods of limiting the magnitude and duration of TOV levels applied to equipment are presented

Keywords

overvoltage; power system transients; power transformers; 500 kV; EMTP program; Vietnam system; hysteresis; line modeling; saturation; series capacitor bypass; shunt reactor outage; single-phase opening; surge arrester; temporary overvoltages; three-phase load rejections; transformer disconnection; transformer modeling; Arresters; Capacitors; Cities and towns; Hysteresis; Inductors; Intelligent networks; Power transmission lines; Shunt (electrical); Surge protection; Transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Management and Power Delivery, 1998. Proceedings of EMPD '98. 1998 International Conference on

Print_ISBN

0-7803-4495-2

Type

conf

DOI

10.1109/EMPD.1998.705529

Filename

705529