A method for improving the flexibility of a combined cooling, heating and power generation system by compressor pumping energy storage

Abstract

The invention discloses a method for improving the flexibility of a combined cooling, heating and power generation system through air suction and energy storage of an air compressor. The method is fully coupled with the solar photo-thermal application. According to an energy storage technology, the problems of solar volatility and intermittency can be effectively solved, the energy utilization rate of a gas turbine is improved, and emission of pollutants is reduced. According to the method, the time-by-time requirements of user cooling, heating and power loads are comprehensively considered, the air suction flow of a bypass air suction energy storage subsystem of the corresponding air compressor is determined so as to control the output power of a gas turbine set, and the system variable load operation is realized; the air release flow and the air release temperature of a compressed air energy release subsystem are regulated and controlled so as to adjust the output power of the system, and the overall supply and demand balance of the system is enhanced; and meanwhile, the method further has the advantages of being high in overall efficiency, flexible in thermoelectric load allocation and the like, and is suitable for the fields for exploration of the efficient, gradient and multi-stage utilization and the like of energy.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a method for improving the flexibility of a combined cooling, heating, and power generation system by storing air pumped by a compressor. Background technique [0002] As a new type of multi-objective energy supply form, the cogeneration system of cooling, heating and power conforms to the principle of energy cascade utilization and has a high energy utilization rate. Currently, it is widely used in industrial areas, office buildings, schools, hotels and other buildings. [0003] At present, in practical engineering applications, the demand-side load is affected by factors such as seasons, day and night, and often exhibits large fluctuations, which makes the cogeneration system have to deviate from the design operating conditions. Therefore, appropriate variable operating conditions are used to adjust means are of great importance. At the same time, the combined heat and po...

AI Technical Summary

Problems solved by technology

At the same time, the combined heat and power system often adopts the operation mode of "heating to determine power" in order to maximize the use of energy input into the system, which often leads to a mismatch between the output power of the system and the electric load on the demand side, which is likely to cause excess power and prime movers. Problems such as low average load rate and low system efficiency

In the process of solar energy application, its volatility and indirectness cannot be ignored. Therefore, it is necessary to design a new type of gas turbine cogeneration system that can realize the variable load operation of the gas turbine cogeneration system and improve the overall supply and demand balance, and can avoid the overall efficiency of the system. A systematic approach to overcoming the negative effects of solar energy

Images