Title :
Small signal stability analysis of grid connected wind energy conversion systems
Author :
Ravichandran, Sharon ; Dasan, S. G Bharathi ; Devi, R. P Kumudini
Author_Institution :
Anna Univ., Chennai, India
Abstract :
Distributed Generation (DG) is a small form of generation in less than tens of MW range from renewable energy sources. Wind Energy Conversion System (WECS) based on constant speed squirrel cage induction generator is a popular system in India. Small signal stability analysis is very much essential to study the oscillations which normally exist in a power system and leads to unstable operation when small disturbances are applied. Basically, synchronous machine rotor is prone to weakly damped (low frequency) oscillations. But damper winding provides less damping for low frequency oscillations with small amplitude. It justifies the need for Power System Stabilizer (PSS) as a damper for oscillations. So, this work is intended to find the effect of wind energy conversion system on small signal stability conditions of conventional power system with synchronous generators with PSS. Eigen value analysis is conducted after developing a Differential-Algebraic model (DAE) in power balance form and tested on a modified 3 synchronous machine - 9 bus system with constant speed wind turbines.
Keywords :
asynchronous generators; direct energy conversion; eigenvalues and eigenfunctions; renewable energy sources; squirrel cage motors; synchronous machines; wind power plants; wind turbines; constant speed squirrel cage induction generator; constant speed wind turbines; damper winding; differential-algebraic model; distributed generation; eigen value analysis; grid connected wind energy conversion systems; power balance form; renewable energy sources; small signal stability analysis; synchronous machine rotor; Damping; Load modeling; Mathematical model; Power system dynamics; Power system stability; Rotors; Wind turbines; DG; SG and PSS; WECS;
Conference_Titel :
Recent Advancements in Electrical, Electronics and Control Engineering (ICONRAEeCE), 2011 International Conference on
Conference_Location :
Sivakasi
Print_ISBN :
978-1-4577-2146-5
DOI :
10.1109/ICONRAEeCE.2011.6129760