Dynamic Stability Study of FSIG based Hybrid Power Generation

Abstract

As a result of increasing environmental concern, increasing amounts of electricity are generated from renewable sources. One way of generating electricity from renewable sources is to use wind turbines. A tendency to establish more wind turbines can be observed. As a result of this, in near future wind turbines may start to influence the behavior of electrical power systems. To investigate the impact of increasing wind turbine penetration, power system dynamics studies need to be carried out. To this end, power system dynamics simulation software is used, in which wind turbine models must be integrated to enable the investigation of increasing wind turbine penetration on power system behavior. If wind turbine models are to be integrated into power system dynamics simulation software, it must be possible to calculate the initial conditions of the dynamic model from load flow data to be able to initialize the dynamic model from load flow data to be able to initialize the dynamic simulation correctly. Dynamic model of a synchronous generator based system and fixed speed induction generator based wind generation system, connected to grid are developed, and their steady state and dynamic performance is explored. On establishing linearized Phillips-Heffron model, open loop Eigen values are calculated and state-space equations are used to study the stability. Simulation results carried out by MATLAB show the potential effectiveness of enhancing dynamic stability. Keywords: wind turbine, modelling, simulation, power system dynamics, wind profile, model initialization, initial conditions, and induction generator