To regulate the nonsinusoidal or 3 phi unbalance current injection into utility power systems, electric utilities have to specify the minimum 3 phi short-circuit current at the point of common coupling with the customers having the distortion source. However, the present specification rules, without theoretical verification, caused controversy between the electic utility and its customers under regulation. To resolve this controversy, this paper presents an efficient estimation algorithm for the minimum 3 phi short-circuit current. The authors then estimate the maximum traction load at seven 161 kV substations of the Taiwan high-speed railway system which is now being planned. Using the maximum traction load and the minimum short circuit capacity derived, they estimate the maximum unbalance of the 3 phi voltage at these seven 161 kV substations, and compare their results with those of Taipower to demonstrate the effectiveness of their proposed algorithm.
Specification of minimum short-circuit capacity for three-phase unbalance limitation based on an efficient algorithm
Technische Richtlinie zur Begrenzung der Schieflast in einem Drehstromnetz bei der Stromversorgung eines Bahnstromnetzes durch Festlegung der Kurzschlußleistung
Electric Power Systems Research ; 39 , 3 ; 223-232
1996
10 Seiten, 7 Quellen
Aufsatz (Zeitschrift)
Englisch
Verbundbetrieb , Spannungsverzerrung , Schieflast , Drehstromnetz , Kurzschlussstrom , Speiseleitung , Bahnstromnetz , Richtlinie , Parameterschätzung , Systemparameter , Netzplanung , Untersuchungsergebnis , Systemvergleich , Systembeschreibung , Oberschwingungsverzerrung , Last (elektrisch) , Energienetzoberschwingung , elektrisches Netz (Energienetz) , Taiwan , Netzbetrieb , Kraftschluss
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