Electrical Engineering

, Volume 93, Issue 1, pp 33–42 | Cite as

Effects of STATCOM, TCSC, SSSC and UPFC on static voltage stability

  • Mehrdad Ahmadi KamarposhtiEmail author
  • Hamid Lesani
Original Paper


The purpose of this paper is to study the effects of four FACTS controllers: STATCOM, TCSC, SSSC and UPFC on static voltage stability in power systems. Continuation power flow is used to evaluate the effects of these devices on system loadability. Applying saddle node bifurcation theory with the use of PSAT, effects of these devices controllers on maximum loading point are determined. Static voltage stability margin enhancement using STATCOM, TCSC, SSSC and UPFC is compared in the modified IEEE 14-bus test system.


Voltage collapse Static voltage stability STATCOM TCSC SSSC UPFC 



Continuation power flow


Maximum loading point


Flexible AC transmission system


Static var compensator


Static synchronous compensator


Thyristor-controlled series capacitor


Static synchronous series compensator


Unified power flow controller


Mega Watt margin


Voltage-source inverter


Thyristor-controlled reactor


Gate turn-off thyristors


Power system analysis toolbox


Maximum load parameter


Maximum load active power corresponding with MLP


Base load active power


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Electrical EngineeringIslamic Azad UniversityJouybarIran
  2. 2.Department of Electrical EngineeringUniversity of TehranTehranIran

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