Control of Synchronous Generator Excitation and Rotor Angle Stability by using Static Synchronous Compensator (STATCOM) with Reference Voltage Compensation (RVC) Simulation Method

The static synchronous compensator (STATCOM) is one type of FACTS devices which resembles in many respects a rotating synchronous condenser used for voltage control and reactive power compensation. The STATCOM can increase transmission capacity, damping low frequency oscillation, and improving transient stability. This paper investigated for the transient stability improvement by using static synchronous compensator (STATCOM). The MATLAB software model is used for simulation of test system. Control scheme for STATCOM (PID controller) and generator excitation to achieve transient stability, damping oscillation is controlled by power system (PSS) and voltage regulation enhancement of power systems is presented. First, the model of STATCOM in a power system is derived. Then, the nonlinearities of the generator and the STATCOM model are alleviated. With the help of robust control theory, the fluctuation of system structure, the parameter uncertainties and the interconnection between the generator and STATCOM are taken into consideration in the controller design. The results present the system performance with all operating conditions. It is shown that the proposed control can provide better stability, voltage control and damping of rotor angle than other schemes.