Dynamic Integration and Control of Fixed-Sp eed Wind Generation System with Multimachine System

A. H. M. A. Rahim; S. A. Al-Baiyat

doi:10.37591/.v1i1-2-3.3225

Abstract

Since the average life of a wind generator is about 20 years, many of the wind systems will be employingconventional fixed-speed cage generators in spite of the superiority of the variable-speed devices. As theextent of wind integration continues to grow, the wind parks may need to be integrated with AC power grids.The integration to grids, particularly to weak ones, may give rise to transient conditions detrimental to boththe asynchronous as well as synchronous systems. This article presents an integrated dynamic model of thefixed-speed wind system with a multimachine AC power system. Simulation studies of a 4-machine 12-bussystem indicate that under some contingencies a small steady slip may continue to pump transients harmfulfor both the systems. A frequency controller in the electro-mechanical loop of the wind system has beenshown to mitigate the problem effectively.Keywords: Wind system modeling simulation, induction generator control, multimachine power system,dynamic study