State evaluation-based fault diagnosis system for EH oil station

A fault diagnosis system and state evaluation technology, applied in the field of information security, can solve problems such as difficult system design, difficult to predict maintenance and maintenance, to ensure real-time and accuracy, solve data storage and call problems, and ensure stability and safety effects

Pending Publication Date: 2021-02-26
DALIAN UNIV OF TECH
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Problems solved by technology

[0006] Considering that the status of equipment is affected by many environmental conditions and external factors, without monitoring the behavior of the system, it is difficult

Method used

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  • State evaluation-based fault diagnosis system for EH oil station
  • State evaluation-based fault diagnosis system for EH oil station
  • State evaluation-based fault diagnosis system for EH oil station

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[0054] In order to express the purpose, technical solutions and advantages of the present invention more clearly, the present invention will be further described in detail through the following embodiments and accompanying drawings.

[0055] An equipment state evaluation and fault diagnosis system based on fault tree method and variable weight synthesis theory for EH oil station. Including equipment data collection and state evaluation, according to the state evaluation, the EH gas station subsystem is based on the fault tree method to find the specific fault location.

[0056] refer to figure 2 , the process of analyzing the failure consequences of the EH gas station is as follows:

[0057] Step 1: Divide the EH oil system into layers according to functions, and divide the equipment with the same function into one layer;

[0058] Step 2: Analyze the failure mode of each equipment in the EH gas station. According to the external manifestation of the equipment, it is divided...

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Abstract

The invention provides a state evaluation-based fault diagnosis system for an EH oil station, and belongs to the technical field of information security. The fault diagnosis system is divided into anFMEA module, an EH oil station state evaluation module, a fault tree diagnosis and analysis module and a fault tree construction module. According to the invention, a fault diagnosis method based on avariable weight comprehensive theory is used; the equipment operation parameters, the state characteristic parameters and the parameter weights are fully utilized, state evaluation of different levels of systems and equipment can be achieved, and the real-time performance and the accuracy of state evaluation and fault diagnosis results are fully guaranteed.

Description

technical field [0001] The technology relates to an EH gas station state evaluation and fault diagnosis system based on fault tree and variable weight comprehensive theory, and belongs to the field of information security technology. Background technique [0002] The EH oil supply system is the storage center of EH oil. Its main task is to provide the required high-pressure anti-fuel to the various actuators of the steam turbine digital electro-hydraulic control system (DEH-digital electro-hydraulic control system) to ensure the normal operation characteristics and physical and chemical properties of the anti-fuel. characteristic. In recent years, due to the continuous improvement of unit power and steam parameters, the size of the main steam valve, regulating steam valve and actuator of the steam turbine should also increase accordingly. In order to reduce the size of the hydraulic device as much as possible, many power plants are constantly Increase the working pressure o...

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06Q10/00G06Q50/06G06F111/08G06F119/02
CPCG06Q10/0639G06Q10/20G06Q50/06G06F30/20G06F2111/08G06F2119/02
Inventor 潘学军王梦月
Owner DALIAN UNIV OF TECH
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