Replacement of Ancillary Service Resources Lost during Decarbonization

Abstract

Decarbonization increases the need for ancillary services (AnS) but simultaneously decarbonization leads to the loss of power plants providing them. Renewable resources are not primarily designed to provide AnS. The separation of electricity generation from AnS provision is proposed and a concept of a hybrid power plant combining small generators and battery energy storage system (BESS) is introduced in this article. Technologies within such a power plant may be stopped and ready to start when AnS is currently not activated, which saves emissions. Delay in the start of turbines requires BESS support and represents a challenge for turbines scheduling and control/dispatch. The goal of this article is to describe uncertainties associated with the AnS provision and to propose suitable optimization methods and architecture of control algorithms.