A study of Static Synchronous Compensator in two power flow models

This paper demonstrate the modeling and control of the Static Synchronous Compensator (STATCOM) using Newton Raphson Load Flow (NRLF) and Fast Decoupled Load Flow (FDLF) algorithm in MATLAB environment. To reduce the complexity of the program, decoupling method is used. The STATCOM is a shunt FACTS (Flexible AC Transmission System) controller which is used to improve the bus voltage profile. Both models are used in multiple control modes. A fictitious bus is created in both models to connect the STATCOM and to reduce the complexity of the program. The STATCOM is connected via coupling transformer impedance. The switching losses and losses in the coupling transformer are also incorporated in this model. The various case studies are carried out in IEEE 30-bus test network with and without the STATCOM. The results justify the enhancement of power quality for multiple case studies.