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A method for state assessment of power generation equipment based on autoencoder

A technology for power generation equipment and state assessment, which is applied in the direction of instruments, data processing applications, biological neural network models, etc., can solve problems such as not considering the impact of assessment results, and achieve avoidance of uncertainty, best accuracy, and enhanced timeliness Effect

Active Publication Date: 2021-06-11
HUAZHONG UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although most studies have realized the evaluation of the overall operating state of the equipment, the state characteristic parameters in each strategy still use fixed thresholds, without considering the impact of changes in operating conditions on the thresholds of each parameter and the evaluation results

Method used

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  • A method for state assessment of power generation equipment based on autoencoder
  • A method for state assessment of power generation equipment based on autoencoder
  • A method for state assessment of power generation equipment based on autoencoder

Examples

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Embodiment 1

[0052] see figure 2 and image 3 , using the induced draft fan of a thermal power plant as a specific example to illustrate the self-encoder-based power generation equipment state evaluation method provided in Embodiment 1 of the present invention, the state evaluation method includes the following steps:

[0053] Step 1, collecting relevant parameters of the operating state of the induced draft fan.

[0054] Specifically, firstly, the required data is regularly collected from the SIS system, in which only some controllable margins and key information parameters are selected as the input of the model, such parameters include generator power, motor current, motor winding temperature, Drive end bearing temperature, bearing temperature in non-drive end, drive end X-direction vibration, drive end Y-direction vibration, non-drive end X-direction vibration, non-drive end Y-direction vibration, fan blade opening, inlet pressure and flue gas 12 induced draft fan parameters such as ...

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Abstract

The invention belongs to the technical field related to power generation equipment monitoring and condition maintenance, and discloses a power generation equipment condition assessment method based on an autoencoder, the method comprising the following steps: (1) Selecting energy state characteristic parameters, and periodically collecting them based on an SIS system The real-time operation data and historical operation data of the selected state characteristic parameters; (2) establishing a state characteristic parameter model, and determining the structure of the parameter model and the corresponding activation function at the same time; (3) using the historical operation data to train the parameter model, Until the obtained training error and training time are both minimum; (4) Statistical distribution characteristics of the residuals of the current state characteristic parameters obtained by the parameter model, and then determine the membership function relationship of each state characteristic parameter; (5) Step ( 4) The obtained residuals are input into the fuzzy state evaluation model for real-time evaluation of the operating state of the power generation equipment. The invention improves the evaluation accuracy, reduces the cost, and has strong applicability.

Description

technical field [0001] The invention belongs to the related technical field of power generation equipment monitoring and condition maintenance, and more specifically relates to a method for evaluating the state of power generation equipment based on an autoencoder. Background technique [0002] The use status of power plant equipment is directly related to the reliability and economy of unit operation. Only when the equipment is in the best state can it exert excellent performance and achieve the best energy-saving and consumption-reducing effect. However, in practice, due to the needs of production, power plant equipment has been in high temperature and high pressure, single machine, full load and continuous operation for a long time, which puts forward strict requirements on the reliability of the equipment. At the same time, in order to maximize the economic benefits of the power plant, it is objectively required to further rationally arrange the maintenance cycle and mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q10/00G06Q50/06G06N3/04
CPCG06Q10/0639G06Q10/20G06Q50/06G06N3/045
Inventor 杨涛杨嘉巍陈刚张成何健康陈前明宁立明李冰何望飞门勇李伟铭
Owner HUAZHONG UNIV OF SCI & TECH
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