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A method and system for deep peak regulation of thermal power unit

A technology of thermoelectric units and units, applied in heating systems, hot water central heating systems, heating methods, etc., can solve the problems of large investment in transformation and poor heating economy, so as to increase the margin for peak regulation and improve the absorption of new energy. The effect of energy capacity

Active Publication Date: 2022-07-08
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned thermoelectric decoupling technologies all need to transform the unit or thermal system, which requires large investment and poor heating economy, and the safety of the transformed unit needs to be further verified.

Method used

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  • A method and system for deep peak regulation of thermal power unit
  • A method and system for deep peak regulation of thermal power unit
  • A method and system for deep peak regulation of thermal power unit

Examples

Experimental program
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Embodiment 1

[0035] When the heat load of the unit is determined, the adjustable range of the electric load of the unit is determined accordingly. If the unit needs to perform a wider range of electrical load peak regulation, it is necessary to change the heat load of the unit. Considering the large thermal inertia of the heat network, the unit can provide more heat to the heat network before deep peak regulation, and store the heat in the heat network. It can reduce or even stop heating, so that the electrical load of the unit can be reduced to a lower level, leaving more space for absorbing new energy.

[0036] Taking a condensing unit as an example, the heat network structure with the unit as the heat source is as follows: figure 1 The heating system is a complex system, appropriate simplification can be made to focus on the main contradiction and the following assumptions can be made:

[0037] The standard indoor temperature of each building in the heating network is 18℃;

[0038] T...

Embodiment 2

[0066] In one or more embodiments, a system for deep peak regulation of a thermal power unit is disclosed, including:

[0067] The data acquisition module is used to determine the heating margin value of each electrical load and the critical electrical load of the unit under different outdoor temperatures;

[0068] The function fitting module is used to obtain the functional relationship between the heating margin and the outdoor temperature under different electrical loads through curve fitting; as well as the functional relationship between the critical electrical load and the outdoor temperature;

[0069] According to the predicted value of outdoor temperature on the forecast day, and through the above fitting functional relationship, the heating margin of each electrical load and the critical electrical load of the unit on the forecast day are determined respectively; and then the heating margin of each electrical load of the unit on the forecast day is obtained by fitting....

Embodiment 3

[0074] In one or more embodiments, a terminal device is disclosed, including a server, the server including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the The method for implementing the deep peak regulation of the thermal power unit in the first embodiment is implemented in the program. For brevity, details are not repeated here.

[0075] It should be understood that, in this embodiment, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors, DSPs, application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices. , discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

[0076] The memory may include re...

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Abstract

The invention discloses a method and system for deep peak regulation of a thermal power unit, comprising: determining the heating margin value of each electric load and the critical electric load of the unit under different outdoor temperatures; The functional relationship between the heating margin and the outdoor temperature; and the functional relationship between the critical electrical load and the outdoor temperature; according to the predicted value of the outdoor temperature on the forecast day, the functional relationship between the heating margin and time of each electrical load of the unit on the forecast day is obtained by fitting ; Combined with the transmission time of the heat network, based on the functional relationship, determine the time when the unit starts to store heat to the heat network with the maximum heating capacity under the current load, and the time when the thermal power unit enters the deep peak regulation state; The operation mode of the unit is controlled. The method of the invention can realize thermal decoupling without increasing equipment investment, which can not only ensure the heating quality of the heating network but also improve the operation flexibility and economy of the thermal power unit.

Description

technical field [0001] The invention relates to the technical field of deep peak regulation of thermal power units, in particular to a method and system for deep peak regulation of thermal power units. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In recent years, China's new energy development has been at the forefront of the world. Despite the rapid development of new energy sources such as wind power and photovoltaics, the difficulty of new energy consumption and grid connection caused by the mismatch between resource-rich areas and power consumption areas, technical factors and institutional obstacles are still problems that plague the development of the industry. [0004] The thermocouple and characteristics of the thermoelectric unit determine that the adjustment range of the electric load of the thermoelectric unit is limited by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D3/02F24D3/10F24D19/10
CPCF24D3/02F24D3/1058F24D19/1015Y02E10/56
Inventor 张虎
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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