Simulation of Distribution Static Compensator (D-STATCOM) to Improve Power Quality

In view of the influence of electrical utilities on the quality of services provided to the customer, the term “power quality” has gained significant interest. The main purpose of the distribution static compensator (D-STATCOM) is to protect the consumer from supply voltage sag, voltage swell as well as provide a unity power factor at the utility for different load power factor values. This paper analyses the power flow inside the D-STATCOM in several cases. The analysis provides useful information about the sizes of the D-STATCOM components. The simulation results have confirmed the mathematical analysis and proved that it is able to absorb or release the active power to recharge the capacitor. In addition to this, it carries the total responsibility to ensure the reactive power required by the load under all conditions.