Control strategies for energy storage to smooth power fluctuations of wind parks

Fluctuating wind speed cause power output fluctuations of wind parks. A concept of dynamic conditioning was developed to smooth these fluctuations. This paper gives a brief introduction to the energy conditioning concept, discusses various energy storage systems and compares control strategies for a fly wheel energy storage to smooth the power fluctuations. The storage controls, tolerance band and stochastic dynamic optimization, were implemented and compared. By the application of dynamic storage systems an intermediate storage of the wind energy is realized. Therefore short time fluctuation of the energy sources can be absorbed directly on location.