Back-pressure type cogeneration and pure condensing steam thermal power combined dispatching system and dispatching method thereof

Abstract

The invention provides a back-pressure type cogeneration and pure condensing steam thermal power combined dispatching system and a dispatching method thereof. The system comprises a cogeneration unit, a pure condensing steam type thermal power unit, a centralized heat absorption refrigerator, an air conditioner, an electric energy meter, a refrigerating fan coil, a cold water consumption gauge, a second remote centralized controller and a dispatching control device, wherein the second remote centralized controller is used for collecting the power consumption data detected by the electric energy meter and the cold water consumption data detected by the cold water consumption gauge, and the dispatching control device is used for controlling the running of the cogeneration unit, the pure condensing steam type thermal power unit, the air conditioner and the refrigerating fan coil through a first, second and third remote centralized controllers. A pipeline distance from a user to a heat source is collected and the pipeline distance is utilized to reasonably dispatch the condensing steam type thermal power unit and the cogeneration unit, which originally run independently, in a combined form, so that the total energy consumption of the cogeneration unit and the pure condensing steam type thermal power unit is efficiently reduced, the fuel resource is prevented from being wasted, and the dispatching becomes more timely and accurate.

Description

technical field [0001] The invention relates to an urban comprehensive energy supply system, in particular to a method for realizing optimal control of a power system by dispatching refrigeration loads. Background technique [0002] The existing power grid includes two power generation modes: one is to provide electric energy solely from the power generated by the combined heat and power unit, and the other is to provide electric energy solely from the power generated by the condensing thermal power unit. These two generator sets operate independently. Among them, the combined heat and power unit supplies electric energy to end users and provides heating energy at the same time. The condensing steam thermal power unit can only provide electric energy to end users, and heat energy needs to be supplied by another thermal energy plant. [0003] The physical state of the operation of the back pressure combined heat and power unit is to reduce heat generation and must linearly ...

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the above two patents only solve the problem of how to effectively utilize the electric energy and heat energy produced by the combined heat and power unit.

However, it does not solve the problem of how to control the heating and power generation output that the combined heat and power unit should bear in order to save energy when it is combined with a pure condensing thermal power unit.

[0007] The heating hot water produced by the back-pressure combined heat and power unit is converted into cold water by the centralized heat absorption refrigerator. Due to the limitation of the transmission distance and the flow rate of cold water, there is a certain distance to reach the user, while the generated electricity can be instantly Reach the user; in the prior art, there is no system and system for reasonably joint dispatching and control of the back-pressure cogeneration unit and the coal-fired pure condensing thermal power unit according to the distance between the back-pressure cogeneration unit and the heating user. method, making scheduling more timely and accurate, and avoiding waste of energy

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