Dynamic Stability Improvement of an Integrated Grid- Connected DFIG based Offshore Wind Farm and SCIG Marine- Current Farm Using a STATCOM

Here in this paper presents a control strategy based on a static synchronous compensator (STATCOM) obtain both voltage control and damping enhancement of grid connected integrated 80 MW offshore wind form (OWF) and 40 MW marine current farm (MCF). The demonstration of the investigated Offshore Wind Farm is simulated by an equivalent wind turbine (WT) while an equivalent squirrel cage rotor induction generator (SCIG) driven by an equivalent marine current turbine (MCT) is employed to simulate the characteristics of the MCT. A damping controller of the STATCOM is developed by utilizing modal control theory to contribute effective damping characteristics to the investigated system under different operating conditions. A frequency domain control strategy based on a linearized system structure utilizing eigenvalue techniques and a time domain control scheme based on a nonlinear system model subject to various fluctuations are both employed to simulate the effectiveness of the recommended control approach. It can be finished from the gained responses that the recommended STATCOM combined with the designed with the damping controller is very effective to control the studied system under various voltage inequalities. The voltage changeability like the exterior three phase short circuit faults of the AC bus subject to the active power fluctuations of the studied system can also be effectively maintained by the suggested control strategy.