A global supervision for wind/hydro power plant and storage system connected to AC grid

This paper proposes a global supervision for Hybrid Renewable Energy Systems (HRES), integrating fixed speed wind generators and variable speed small hydropower plant and a storage unit. This supervisor must improve the grid insertion of renewable distributed generations by associating it with a short-term storage unit. The supervision system is structured in four levels. Level 1 and Level 2 are considered in this paper. The supervisor for Level 2 provides a total reference power while maximizing the power output of hydroelectric station, and smoothing the wind power. The supervisor for Level 1 provides an instantaneous reference power for each component of the hybrid system. The performance of this supervisor is shown with the help of simulations.