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TITLE : COMPARISON OF PUSH PULL AND VSI BASED D-STATCOM FOR MULTI BUS SYSTEM  
AUTHORS : Venkata Kishore P      Rama Reddy S      Kishore P.V       
ABSTRACT :

The D-STATCOM is a shunt connected FACTS device which supplies reactive power to the load to improve the voltage stability of the load busses. The D-STAT COM in multi bus system is capable of reducing the losses and improving the voltage regulation. This work deals with comparison of Push Pull and Voltage Inverter based D-STATCOM for multi bus system. Eight bus system is modeled using the elements of SIMULINK. The models are developed for eight bus system with and without D-STATCOM. The two D-STATCOM systems are compared with respect to total harmonic distortion and reactive power comparison. The D-STATCOM is studied with respect to the voltage stability improvement at the load busses. The results of VSI based D-STATCOM system are compared with those of Push pull inverter based D-STATCOM system.

Keywords: Distribution statics synchro- nous compensator (D-STATCOM), Voltage source inverter (VSI), Push Pull inverter, Power Quality, FACTS.
 
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