International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 07 | July -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1113 ENHANCEMENT OF DYNAMIC STABILITY AND VOLTAGE CONTROL OF A GRID- CONNECTED OFFSHORE WIND FARM AND MARINE- CURRENT FARM USING A STATCOM T.RADHA 1 , M. SHOBHA 2 , B.NARENDRA 3 , K.SWETHA 4 1 PG Scholar, MTECH (PE), CVRT, Andhrapradesh, India 2 Associate Professor & HOD, Dept of EEE, CVRT, Andhrapradesh, India 3,4 Assistant Professor, Dept of EEE, Andhrapradesh, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract: - This venture shows a control plot in view of a static synchronous compensator (STATCOM) to accomplish both voltage control and damping improvement of a grid- associated incorporated 80-MW offshore wind farm (OWF) and 40-MW marine-current farm (MCF). The execution of the contemplated OWF is reproduced by an equal doubly-fed induction generator (DFIG) driven by a proportional wind turbine (WT) while a comparable squirrel-confine rotor induction generator (SCIG) driven by an equal marine- current turbine (MCT) is utilized to recreate the qualities of the MCF. A damping controller of the STATCOM is planned by utilizing modular control hypothesis to contribute powerful damping attributes to the considered system under various working conditions. A frequency-area approach in view of a changed system display utilizing Eigen esteem strategies and a period space plot in view of a nonlinear system show subject to different unsettling influences are both utilized to reenact the adequacy of the proposed control conspire. It can be finished up from the reproduced comes about that the proposed STATCOM joined with the outlined damping controller is extremely successful to settle the contemplated system under aggravation conditions. The voltage fluctuations of the AC bus subject to the dynamic power varieties of the contemplated system can likewise be viably controlled by the proposed control plot. INTRODUCTION A wind turbine is a device that believers kinetic energy from the wind into mechanical energy. In the event that the mechanical energy is utilized to create electricity, the device might be known as a wind generator or wind charger. In the event that the mechanical energy is utilized to drive hardware, for example, for granulating grain or pumping water, the device is known as a windmill or wind pump. Produced for over a thousand years, the present wind turbines are fabricated in a scope of vertical and even pivot sorts. The littlest turbines are utilized for applications, for example, battery charging or helper power on cruising pontoons; while vast grid-associated varieties of turbines are turning into an inexorably extensive wellspring of business electric power. Sustainable power source is one of the most blazing subjects in the whole world today because of the quick and gigantic utilization of non-renewable energy sources. Some scholarly scientists have dedicated to high-limit offshore wind turbine generators (WTGs) associated with coastal substations through undersea links .Currently, wind doubly-fed induction generators (DFIGs) and wind perpetual magnet synchronous generators (PMSGs) have been broadly utilized as a part of high-limit offshore wind farms (OWFs). From the authentic perspective, a direct- coupled, particular PMSG for variable-speed wind turbines was proposed and various single-stage yields were independently redressed to acquire a smooth dc connect voltage. The dynamic model in light of little flag soundness of a wind turbine (WT) utilizing an immediate drive PMSG with its power converters and controllers was proposed. Amid the most recent decades, Wind Energy Conversion System (WECS) has developed drastically. Variable-speed wind Turbines (VSWTs) draw in extensive enthusiasm around the globe, which is one of the arrangements with the most noteworthy potential to decrease wind energy cost. Essentially wind farm comprises of many wind turbines that are associated with each other to create little measure of electrical power that turns out to be powerful subsequent to interfacing with the transformer. Zones that comprises of the quantity of wind turbines for power era from wind and are associated with each other in the diverse way is called wind farm During the most recent decades. The VSWT systems are normally in view of doubly fed induction generators (DFIGs) or changeless magnet synchronous generators (PMSGs). Essentially wind farm comprises of many wind turbines that are associated with each other to create little measure of electrical power that turns out to be powerful in the wake of interfacing with the transformer. Ranges that comprises of the quantity of wind