STEADY STATE ANALYSIS OF GRID CONNECTED WIND ENERGY CONVERSION SYSTEMS

Abstract

Abstract: To fulfill the increasing power requirement, in an eco-friendly manner, a large number of wind farms are already in operation and more are planned or under construction. Variable speed systems with power electronic interface take over the disadvantages of fixed speed wind generators. This paper presents the performance analysis comparison of fixed speed (SCIG-Squirrel cage induction generator)) and variable speed (DFIG-Doubly-fed induction generator)) wind generators interconnected to the grid when they treated as PQ bus. This study also makes use of the ability of variable speed systems to extract maximum power from the available wind power. On the other hand, power system dynamic study is very much essential to study the influence of wind turbines on electrical power systems. This transient study requires initialization of state variables. The proposed approach is a simple method which requires minimum effort to initialize the state variables of DFIG for transient stability analysis.