Revenue Analysis of Cooperation of Battery Storage and Wind Power to Provide Frequency Regulation in the Energy Market

A constant balance between generation and consumption is required to maintain a stable power system. The system frequency, which deviates from its nominal value in cases of imbalance, serves as an indicator of this equilibrium. The demand for stabilizing services is becoming increasingly important as the Turkish energy system incorporates a larger percentage of weather-dependent energy sources, such as wind and solar power. Ancillary services, offered by various power system actors with flexible output or consumption, provide a means to sustain system frequency stability. This involves adjusting energy input and output as needed. This study explores the feasibility of wind energy providing ancillary services in the Turkish grid system. To maximize the utilization of the Battery Energy Storage System over the simulated time, the research employs an optimization model. The study utilizes data from the Ministry of Energy and the electricity spot market, taking into account various factors such as battery parameters, decision variables, and secondary conditions to maximize profit. Scenario analyses are conducted for both summer and winter periods, revealing revenue trends associated with different battery sizes. Results indicate that revenue generally increases with larger battery sizes, while return on investment decreases. The study highlights the potential for battery-wind hybrid systems to dominate up-regulation markets, particularly during the summer period. However, it also underscores the complexity of predicting market developments and emphasizes the need for further analysis.