DocumentCode :
3104678
Title :
Comparison of steady-state SVC models in load flow calculations
Author :
Chen, Peiyuan ; Chen, Zhe ; Bak-Jensen, Birgitte
Author_Institution :
Aalborg Univ., Aalborg
fYear :
2008
fDate :
1-4 Sept. 2008
Firstpage :
1
Lastpage :
5
Abstract :
This paper compares in a load flow calculation three existing steady-state models of static VAr compensator (SVC), i.e. the generator-fixed susceptance model, the total susceptance model and the firing angle model. The comparison is made in terms of the voltage at the SVC regulated bus, equivalent SVC susceptance at the fundamental frequency and the load flow convergence rate when SVC is operating both within and on the limits. The latter two models give inaccurate results of the SVC susceptance due to the assumption of constant voltage when the SVC is operating within the limits. This may underestimate the SVC regulating capability. Two modified models are proposed to improve the SVC regulated voltage according to its steady-state characteristic. The simulation results of the two modified models show the improved accuracy of the SVC susceptance while retaining acceptable load flow convergence rate.
Keywords :
convergence; load flow; static VAr compensators; transmission network calculations; convergence rate; firing angle model; generator-fixed susceptance model; load flow calculations; static VAr compensator; steady-state SVC models; total susceptance model; Control systems; Flexible AC transmission systems; Frequency; Load flow; Load modeling; Power system modeling; Static VAr compensators; Steady-state; Thyristors; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International
Conference_Location :
Padova
Print_ISBN :
978-1-4244-3294-3
Electronic_ISBN :
978-88-89884-09-6
Type :
conf
DOI :
10.1109/UPEC.2008.4651502
Filename :
4651502
Link To Document :
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