Study on the flexible control method of thermal storage technology participating in the power grid

Abstract Energy storage technology is significant in the construction of new power systems. Heat storage is one of the technical energy storage routes, which can help the power grid to shift the peak and fill the valley. However, the flexible control method of heat storage technology participating in the power grid has not been deeply investigated. In this study, a flexible control model is built and the control strategy is proposed. The flexible control model introduces a load aggregator to realize flexible load control and benefit all the participants through the four-market trading mode. The flexible control strategy is different based on different scenarios, including the new energy consumption period, peak cutting period, and ordinary period. The case analysis shows that when the aggregator subsidizes the user at 0.25 yuan/kWh in the heating season, the overall benefit is the largest and the income distribution among all the participants is the most reasonable.