D-Q Control Based Statcom for Reactive Power Compensation

Abstract

The STATCOM is a shunt connected FACTS device which supplies reactive power to the load to improve the voltage stability of the load busses. The STATCOM 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 STATCOM for multi bus system. Eight bus systems are modeled using the elements of SIMULINK. The models are developed for eight bus system with and without STATCOM. The two STATCOM systems are compared with respect to total harmonic distortion and reactive power comparison. The STATCOM is studied with respect to the voltage stability improvement at the load busses. The results of VSI based STATCOM system are compared with those of Push pull inverter based STATCOM system. The term power quality is used in synonymous with supply reliability to indicate the existence of an Adequate and secure power supply. Power quality is generally used to express the quality of the voltage. The Reactive power may be compensated in many ways including FACTS controller, fixed capacitors and synchronous condensers etc.The proposed concept can be implemented by using Fuzzy logic controller by using Mat lab/simulink software.