QUANTITATIVE EVALUATION OF LOAD FLEXIBILITY FOR ELECTRIC SUPPLY-DEMAND BALANCE BY DEMAND RESPONSE USING AIR CONDITIONING

Abstract

 Renewable energy is being introduced in Japan with the aim of achieving a decarbonized society, but maintaining a balance between electricity supply and demand is a challenge. Therefore, a method of procuring regulating power in the market and utilizing power through demand response is being considered. In this study, we evaluated the demand-response power of multiple air conditioners for buildings, but found that the tracking error was large, making it difficult to utilize the power in the market. Next, a method to compensate for the tracking error by combining storage batteries was investigated, and it was found that storage batteries with a capacity of 128.6 kW or more were necessary. Furthermore, in an experiment in which ventilation control was also combined, it was found that the power consumption of the air conditioner could be changed by 23.0% to 53.7%, indicating that the storage battery and ventilation control could be used together to supplement the tracking error.