DocumentCode :
2245641
Title :
Application of a protection scheme to mitigate the impact of load rejection in a 500 kV transmission system
Author :
Chandrasena, Waruna ; Jacobson, David A N
Author_Institution :
Syst. Planning Dept., Manitoba Hydro, Winnipeg, MB, Canada
fYear :
2011
fDate :
3-5 Oct. 2011
Firstpage :
140
Lastpage :
145
Abstract :
This paper investigates application of a protection scheme to mitigate the impact of temporary overvoltages caused by load rejection in the Manitoba Hydro 500 kV transmission system. The sectionalization of Dorsey - Forbes 500 kV line at Riel affects temporary overvoltages seen during a load rejection. The results of electromagnetic transient simulations show that overvoltages due to a load rejection on 230 kV side could severely stress surge arresters and other equipment at both Dorsey and Riel stations, and could also lead to ferroresonance. The simulation results formed the basis for functional specification of the new protection scheme at Riel station.
Keywords :
arresters; ferroresonance; overvoltage protection; power transmission protection; Dorsey stations; Manitoba hydro transmission system; Riel stations; electromagnetic transient simulations; ferroresonance; load rejection; protection scheme; surge arresters; temporary overvoltages; voltage 500 kV; Arresters; Capacitors; Inductors; Load modeling; Shunt (electrical); Surges; power system transients; simulation; substation protection; transmission line; voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Power and Energy Conference (EPEC), 2011 IEEE
Conference_Location :
Winnipeg, MB
Print_ISBN :
978-1-4577-0405-5
Type :
conf
DOI :
10.1109/EPEC.2011.6070184
Filename :
6070184
Link To Document :
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