This paper investigates the limit of acceptable capacitive output of SVCs used to provide compensation in an electrified railway system. When working beyond this limit, any increase of reactive power compensation will no longer help to support the system voltage, but will reduce it. The phenomenon is similar to that of voltage collapse experienced in some heavily loaded transmission systems. A method is established to calculate the maximum compensation for such a railway system. Finally a realistic system is used to illustrate the negative effect of excessive compensation under heavy load conditions.
The stability and power flow limits of an electrified railway system with voltage controlled SVCs
1994-01-01
6 pages
Article (Journal)
English
reactive power compensation , stability , heavy load , power system stability , distribution networks , power system analysis computing , railways , electrified railway , SVC , acceptable capacitive output , voltage collapse , computer simulation , static VAr compensators , power flow limits , load flow , digital simulation
Stability estimation of SVCs in distribution systems
Online Contents | 2007
|Load flow in electrified railway
IET Digital Library Archive | 2004
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