Abstract:

Abstract:In order to stabilize the power grid fluctuation due to the grid connection of wind and photovoltaicenergies and realize the combined
operation of scale small hydropower stations group witha variety ofnew energies, this paper aimed at the characteristics of stability, adjustability
and rapid regulation of scale small hydropower stations group,developed an embedded controller integrating the rapid regulating functions of active power and reactive power for hydropower station,which could make small hydropower stations have the ability of power rapid regulation. In addition,in order to realize the closed loop control of scale small hydropower stations group according to the remote control strategies, a closed loop control telecontrol channelamong remote hoststation and hydropower stations must be built.Therefore,this paper proposed two solutions that based on the dispatching data network and wireless communication that taking the practical features of small hydropower station
into consideration. The demonstration plants shows that the power rapid regulating system and the closed loop control of scale small hydropower stations group was realized successfully.

Key words: ">Keywords:">scale small hydropower stations group, dispatching data network, wireless communication, telecontrol channel