Reactive power compensation using D-STATCOM

D-STATCOM is a compensating device which is used to control the flow of reactive power in the distribution systems. Most of loads in this system, being inductive in nature consume more reactive power. As a result, power factor of load deteriorates and this limits the active power flow in the line. The paper aims at developing a D-STATCOM, based on voltage source converter, which injects the reactive power in distribution line. The output voltage of D-STATCOM is made leading to that of system voltage for the purpose of controlling VAR generation. Implementation of D-STATCOM by using PI controller is carried out in MATLAB/ Simulink.