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Evaluation method and system for the minimum output of heating units in deep peak regulation

A heat supply unit and the lowest output technology, applied in data processing applications, instruments, design optimization/simulation, etc., can solve problems such as difficult evaluation and limited field test conditions, and achieve the effect of improving peak shaving response capability

Active Publication Date: 2020-06-26
囯网河北省电力有限公司电力科学研究院 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method and system for evaluating the minimum output of heating units in deep peak regulation, so as to solve the problem that the field test method is difficult to evaluate and is easily limited by the field test conditions

Method used

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  • Evaluation method and system for the minimum output of heating units in deep peak regulation
  • Evaluation method and system for the minimum output of heating units in deep peak regulation
  • Evaluation method and system for the minimum output of heating units in deep peak regulation

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Embodiment 1

[0042] refer to figure 1 , figure 1 It shows the implementation process of the evaluation method for the minimum output of the heating unit in deep peak regulation provided by Embodiment 1 of the present invention, wherein the heating unit includes a steam turbine and a thermal system. The process of the evaluation method for the minimum output of unit deep peak regulation is described in detail as follows:

[0043] S101: Obtain heating parameters and minimum cooling steam flow of the low-pressure cylinder, where the heating parameters include heating steam supply flow and industrial steam supply flow.

[0044] Obtain heating steam flow Industrial steam flow and LP cylinder minimum cooling steam flow When evaluating the minimum output of the heating unit for deep peak regulation, the industrial steam supply flow is supplied by the three-stage steam extraction, and the heating extraction steam flow is supplied by the five-stage steam extraction. The flow always maintain...

Embodiment 2

[0140] refer to figure 2 , figure 2 A schematic structural diagram of a system 200 for evaluating the minimum output of heating units in deep peak regulation provided by Embodiment 2 of the present invention is shown. In this embodiment, the evaluation system 200 for the minimum output of the deep peak regulation of the heating unit includes: a parameter acquisition module 201, a steam turbine main steam parameter calculation module 202, a first medium-pressure cylinder inlet pressure calculation module 203, and a high-pressure cylinder exhaust steam enthalpy value Calculation module 204, first-stage steam extraction parameter calculation module 205, second-stage steam extraction parameter calculation module 206, medium-pressure cylinder inlet steam parameter calculation module 207, medium-pressure cylinder exhaust steam enthalpy calculation module 208, third-stage and fourth-stage steam extraction parameters Calculation module 209 , five-stage steam extraction parameter ca...

Embodiment 3

[0171] refer to image 3 The embodiment of the present invention also provides a terminal device 3, including a memory 31, a processor 30, and a computer program 32 stored in the memory and operable on the processor. When the processor 30 executes the computer program 32 Realize the steps in each method embodiment as described in the above-mentioned embodiment, for example figure 1 Step S101 to step S112 are shown. Alternatively, when the processor 30 executes the computer program 32, it realizes the functions of the modules in the system embodiments described in the above embodiments, for example figure 2 The functions of modules 201 to 212 are shown.

[0172] The terminal device may be computing devices such as desktop computers, notebooks, palmtop computers, and cloud servers. The terminal device may include, but not limited to, a processor 30 and a memory 31 . For example, the terminal device may also include an input and output device, a network access device, a bus,...

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Abstract

The invention is applicable to the technical field of power generation and discloses a method and system for assessing the deep peak regulation minimum output of a heating unit. The method comprises the steps of calculating and obtaining a main steam flow of a steam turbine, a main steam enthalpy value of the steam turbine, an exhaust steam flow of a high-pressure cylinder, an exhaust enthalpy value of the high-pressure cylinder, an inlet steam flow of a medium-pressure cylinder, an inlet steam enthalpy value of the medium-pressure cylinder, an exhaust steam flow of the medium-pressure cylinder, an exhaust enthalpy value of the medium-pressure cylinder and steam extraction parameters of each section, substituting the above obtained parameters into a thermal balance mathematical model of the steam turbine and a thermodynamic system, and calculating the deep peak regulation minimum output of the heating unit. The problems of large assessment difficulty and easy limitation of field test conditions of a field test method are solved, a reference and targeted reference data can be provided for power plant deep peak regulation and flexibility modification, accurate reference data can be provided for determining the deep peak regulation minimum output of an existing heating unit by a power grid dispatch department, and thus the peak regulation response ability of the heating unit for apower gird is improved.

Description

technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to a method and system for evaluating the minimum output of a heating unit in deep peak regulation. Background technique [0002] The rapid development of new energy units has put forward higher and higher requirements for deep peak regulation of thermal power units. In the thermal power unit, since the heating unit supplies heat and electricity to the outside world at the same time, its thermoelectric coupling characteristics greatly increase the difficulty for the unit to participate in the peak regulation of the power grid. At present, the peak shaving output of many heating units can only be reduced to about 70% during the heating season. The National Energy Administration's 2016-2020 "thermal power flexibility transformation technology" development plan clearly proposes to increase the peak shaving range of existing thermal power units. Through flexible t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F30/20
CPCG06F30/20G06Q10/06393G06Q50/06Y02E60/00
Inventor 杨海生王文营卢盛阳杜威张营
Owner 囯网河北省电力有限公司电力科学研究院
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