Title :
Estimating the annual frequency and cost of voltage sags for customers of five Finnish distribution companies
Author :
Heine, P. ; Pohjanheimo, P. ; Lehtonen, M. ; Lakervi, E.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Frequency and cost of voltage sags for customers of five Finnish distribution companies were evaluated. For voltage sag frequency calculations the method of fault positions was applied. Only sags caused by short circuit faults in medium voltage distribution networks were considered. Sag frequency below considered 50% magnitude showed quite low numbers. However the cost related to this sag magnitude revealed that voltage sags are a relevant power quality issue having economic significance
Keywords :
costing; power distribution economics; power distribution faults; power supply quality; short-circuit currents; Finland; Finnish distribution companies; annual voltage sags frequency estimation; economic significance; fault positions method; medium voltage distribution networks; power quality issue; short circuit faults; voltage sag frequency calculations; voltage sags costs;
Conference_Titel :
Electricity Distribution, 2001. Part 1: Contributions. CIRED. 16th International Conference and Exhibition on (IEE Conf. Publ No. 482)
Conference_Location :
Amsterdam
Print_ISBN :
0-85296-735-7
DOI :
10.1049/cp:20010754
