The Synergistic Performance of Heat and Electricity Studied from the Heating Demand Side and the Supply Side

Abstract

As the increasingly fast development of cogeneration of heat and power and renewable energy, it is necessary to review the traditional technical route, and develop a more flexible and efficient cogeneration system. The thermal power units on the heating side and the heating users on the thermal demand side, including the whole heat network transmission system, have a great impact on the power grid dispatching. Exploring the regulating potential of the whole heating system can effectively improve the peak regulation of the power grid and the absorption capacity of new energy. Based on the minimum stable combustion load of the boiler, the peak shaving capacity of the cogeneration unit can be increased by 36 million kW compared with the pure condensation operation. In the social energy consumption system, the cogeneration unit can deeply peak-shaving to promote new energy consumption, and save 2.58 million tons of standard coal per year. In addition, different response and delay characteristics of electricity and heat can be utilized to effectively cooperate with frequency modulation operation of power grid and improve power supply quality and operation stability of power grid. At the same time, on the demand side, the adoption of heat storage method can well adjust the peak and valley difference of the power grid.