Heat pump heat supply system and method suitable for peak regulation of heat power plant

Abstract

The invention provides a heat pump heat supply system and method suitable for peak regulation of a heat power plant. The peak regulation effect can be achieved, and waste heat of a steam turbine generator can further be sufficiently recovered to increase the energy utilization rate. The heat pump heat supply system comprises a heating network circulating water return pipeline, a heat pump, a heating network heater and a heating network circulating water supply pipeline. The output end of the heating network circulating water return pipeline communicates with the heating network circulating water input end of the heat pump, the heating network circulating water output end of the heat pump communicates with the heating network circulating water input end of the heating network heater, and the heating network circulating water output end of the heating network heater communicates with the heating network circulating water supply pipeline. The heat pump is driven electrically, and a driving source is led from the steam turbine generator. A low-temperature heat source of the heat pump is provided by the steam turbine generator. According to the heat supply method, heating network circulating water is delivered to the heat pump, the heat pump is driven by electric energy generated by the steam turbine generator, dead steam or circulating water output by the steam turbine generator isadopted as a low-temperature heat source to heat the heating network circulating water, and then the heating network circulating water is further heated by the heating network heater and then output.

Description

technical field [0001] The invention belongs to the technical field of heat supply, and relates to a combined heat supply system of a heat pump and a heat network heater that can increase the flexibility of the peak regulation performance of a heat supply unit in a thermal power plant, in particular to a heat pump heat supply system suitable for peak regulation in a thermal power plant and heating methods. Background technique [0002] Since electric energy cannot be stored, the generation and use of electric energy are synchronized, so the balance between supply and demand must be ensured. The power load in the power system is constantly changing. In order to maintain the balance of active power and keep the system frequency stable, thermal power plants need to perform peak regulation according to the power load. [0003] The existing peak-shaving technology for thermal power plants mainly utilizes electric boilers to absorb the power generated by turbo-generator sets duri...

AI Technical Summary

Problems solved by technology

Electric boiler peak regulation is only based on the demand for peak regulation and directly reduces the grid load, but does not consider the full utilization of energy, because in the process of electric power production, a large amount of heat is exhausted through the steam turbine generator It is lost, and the electric boiler peak shaving does not recover and utilize this part of heat at all, and the comprehensive utilization rate of energy is relatively low

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