A kind of comprehensive energy system and its control method using cogeneration of heat and power to produce high-parameter heating steam waste energy

Abstract

The invention discloses a comprehensive energy system and a control method thereof which utilize cogeneration of heat and power to produce high-parameter heating steam waste energy, mainly comprising: a steam turbine unit, a heat user, a back pressure machine, a generator, an evaporation heat exchanger, an electric storage type The charging device and transformer, the evaporative heat exchanger use the heating steam from the steam turbine unit to produce high-pressure steam, and the back pressure machine uses the high-pressure steam produced by the evaporative heat exchanger and the heating steam from the steam turbine unit to do work to drive the generator to generate electricity, and the generator The generated electric power is transformed by the first transformer and then sent to the first storage-type charging device. The first storage-type charging device uses the battery pack to store electric energy and uses the charging pile to charge the electric equipment. The invention recycles the residual energy of heating steam to generate power, which not only realizes the cascade recycling of energy, but also satisfies the diversification of steam consumption parameters requirements of heat users and the electricity consumption requirements of electric equipment such as urban electric vehicles, creating a significant Economic benefits and emission reduction benefits.

Description

technical field [0001] The invention belongs to the technical field of cogeneration of heat and power, and in particular relates to a comprehensive energy system and a control method thereof which utilize cogeneration of high-parameter heating steam waste energy and are especially suitable for cogeneration systems of heat and power for industrial heating. Background technique [0002] At present, in order to improve the comprehensive energy utilization efficiency of thermal power units and strive for more utilization hours of power generation, the conversion of pure condensing units to heat supply has been widely developed. However, for different industrial steam users, due to their different processes, the required steam pressure parameters are also different. For thermal power units, there is only one main pipeline for external steam supply, that is, only one external steam supply can be provided. Pressure parameter of steam. As a result: when the external steam supply pr...

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Problems solved by technology

Most of the charging piles on the market are directly powered by the State Grid, which puts a lot of pressure on the power supply of the State Grid, and if there is an emergency such as a power outage, it will affect the power supply of the charging piles

[0004] To sum up the above two technical problems faced by market development, the main technical solutions are: (1) The Chinese patent "High and Low Pressure Two-Stage Industrial Steam Extraction and Heating Device for Steam Turbine" with the application number 201310667813.1, through certain technical means, can meet the Heat users need high and low pressure two-stage steam, but the disadvantage is that two main steam pipelines need to be laid, which greatly increases the investment cost; especially, every time a steam pressure parameter is added, the same problem is faced

(2) The Chinese patent application with the application number 201610093159.1 "a multi-functional new energy vehicle charging pile", through certain technical means, realizes the use of solar energy, a new energy source, to provide electricity, and solves the existing technology that is directly powered by the national grid problem, but it also faces instability in the charging process of electric vehicles due to the randomness and instability of solar energy

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