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Variable working condition mechanism modeling method and system for steam-driven induced draft fan and storage medium

A mechanism modeling and induced draft fan technology, applied in the direction of system integration technology, CAD numerical modeling, information technology support system, etc., to achieve the effect of improving the reliability of evaluation

Pending Publication Date: 2022-08-09
HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD +1
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  • Abstract
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Problems solved by technology

[0004] The present invention provides a method, system and storage medium for modeling the mechanism of variable working conditions of a steam-driven induced draft fan, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions

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  • Variable working condition mechanism modeling method and system for steam-driven induced draft fan and storage medium
  • Variable working condition mechanism modeling method and system for steam-driven induced draft fan and storage medium
  • Variable working condition mechanism modeling method and system for steam-driven induced draft fan and storage medium

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Embodiment Construction

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0047] It should be noted that although the functional modules are divided in the schematic diagram of the system and the logical sequence is shown in the flowchart, in some cases, the modules can be divided differently from the system, or executed in the order in the flowchart. steps shown or described. The terms "first", "second", etc. in the description and claims and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0048] Please refer to figure 1 , figure 1 It is a schematic flowchart of a method for ...

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Abstract

The invention discloses a steam-driven induced draft fan variable working condition mechanism modeling method and system and a storage medium. The method comprises the steps that a historical database generated when a steam-driven induced draft fan operates in a past specific time period is obtained; coal quality and unit load are used as influence factors, and a historical database is used for fitting an actual inlet flow change curve; the guide vane opening degree and the actual inlet flow serve as influence factors, and an actual specific pressure energy change curve is fitted through a historical database; the guide vane opening and the actual specific pressure energy are used as influence factors, and a historical database is used for fitting an actual rotating speed change curve; converting and fusing the actual inlet flow change curve, the actual specific pressure energy change curve and the actual rotating speed change curve on the basis of a similarity principle followed during variable-speed operation of the induced draft fan to obtain a variable-speed operation characteristic curve graph; and extracting and fitting a designed specific pressure energy mathematical model and an operation efficiency mathematical model from the variable-speed operation characteristic curve graph. According to the method, the evaluation reliability of the operation efficiency of the steam-driven induced draft fan can be improved.

Description

technical field [0001] The invention relates to the technical field of control of a steam-driven induced draft fan in a power plant, in particular to a method, a system and a storage medium for modeling the mechanism of a steam-driven induced draft fan under variable working conditions. Background technique [0002] In order to reduce the power consumption rate of the plant, save the raw coal, and avoid the problems of large starting current and low power voltage caused by the motor drive of the induced draft fan of millions of units, the steam-driven induced draft fan has been put into practice in my country's large thermal power units. application. In order to make the steam-driven induced draft fan achieve the best operating efficiency, the technicians estimate the unit load, speed and guide vane opening configuration of the steam-driven induced draft fan at the optimal operating efficiency by collecting a large amount of operating data when the steam-driven induced draft ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F111/10G06F113/06
CPCG06F30/17G06F2111/10G06F2113/06Y04S10/50
Inventor 包能胜蔡国忠罗肇鹏李毅杰范宇晨陈韶华张永艺史义明陈旻刘佳利
Owner HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD
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