Transient Stability Enhancement by DSSC with Fuzzy Supplementary Controller

  • Khalilian, Mansour (Dept. of Electrical and Electronic Engineering, Urmia University) ;
  • Mokhtari, Maghsoud (Dept. of Electrical and Electronic Engineering, Urmia University) ;
  • Nazarpour, Daryoosh (Dept. of Electrical and Electronic Engineering, Urmia University) ;
  • Tousi, Behrouz (Dept. of Electrical and Electronic Engineering, Urmia University)
  • Received : 2010.04.17
  • Accepted : 2010.06.29
  • Published : 2010.09.01


The distributed flexible alternative current transmission system (D-FACTS) is a recently developed FACTS technology. Distributed Static Series Compensator (DSSC) is one example of DFACTS devices. DSSC functions in the same way as a Static Synchronous Series Compensator (SSSC), but is smaller in size, lower in price, and possesses more capabilities. Likewise, DSSC lies in transmission lines in a distributed manner. In this work, we designed a fuzzy logic controller to use the DSSC for enhancing transient stability in a two-machine, two-area power system. The parameters of the fuzzy logic controller are varied widely by a suitable choice of membership function and parameters in the rule base. Simulation results demonstrate the effectiveness of the fuzzy controller for transient stability enhancement by DSSC.


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