Market oriented energy management of wind battery hybrid system

With an increasing penetration of renewable energy sources (RESs) and subsequent lower inertial levels, some challenges occur in the operation of power systems. Battery energy storage systems (BESSs) with their rapid and flexible output power are an ideal candidate for reducing system stability and reliability problems, especially frequency regulation. Performing a pre-operational battery degradation analysis is important for accurately scaling battery capacity and providing accurate bid within market mechanisms. In this thesis, re-establishing of the state of charge battery participating in the primary frequency control according to different methods has been evaluated also by taking into account the life changes. Since the deviation in the power system frequency is due to the wide variety of generation-consumption changes that occur, the cycle degradation assessment of the battery participating frequency regulation is a very complex issue. In this study, battery degradation, which performs primary frequency control, was evaluated by rainflow counting algorithm. Within the study, the effect of the battery on the maximum frequency deviation was revealed by using the governor and turbine models of some of the power plants in operation in the Turkish power system. Reducing wind farm generation forecast errors and arbitrage based on hourly price differences in the electricity market are other important uses of energy storage systems. These other main uses of battery storage systems have been evaluated technically and economically. Within the framework of these evaluations, a new operating algorithm has been developed for the simultaneous use of battery storage systems for different purposes in the electricity market.