Power equipment maintenance decision-making method utilizing equal degradation theory and equipment risks

A technology for power equipment and decision-making methods, applied in general control systems, instruments, adaptive control, etc., can solve problems such as equipment reliability degradation, ignoring the influence of equipment maintenance and equipment failure rates, etc.

Active Publication Date: 2017-05-10
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is mainly aimed at problems such as neglecting the influence of equipment maintenance on the failure rate of equipment in the current research on equipment maintenance strategies, and the trend that the reliability of equipment is deteriorating continuously in the whole life cycle. The equipment degradation theory is introduced into the operation analysis of power equipment, on this basis, the equipment risk-based maintenance strategy optimization model is established

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power equipment maintenance decision-making method utilizing equal degradation theory and equipment risks
  • Power equipment maintenance decision-making method utilizing equal degradation theory and equipment risks
  • Power equipment maintenance decision-making method utilizing equal degradation theory and equipment risks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0077] Below is the step that adopts the specific embodiment of the present invention, as follows:

[0078] 1. Deduce the relationship between the cumulative failure density of each maintenance cycle and the reliability of the first minor repair cycle (that is, the initial state)

[0079] According to the two-parameter Weibull distribution, the failure rate function and reliability function of the power equipment can be obtained as

[0080]

[0081]

[0082] Then its failure probability density function and cumulative failure probability density function are respectively

[0083]

[0084]

[0085] Then MTBF can be expressed by the mean value of the Weibull distribution, and we get:

[0086]

[0087] According to the equal degradation theory, it can be seen that

[0088] MTBF i,j =MTBF 1,1 ×(1-r 1 ) j-1 ×(1-r 2 ) i-1 (25)

[0089] Then substitute formula (24) into formula (25) to get:

[0090] alpha i,j = α 1,1 ×(1-r 1 ) j-1 ×(1-r 2 ) i-1 (26) ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a power equipment maintenance decision-making method, and particularly relates to a power equipment maintenance decision-making method utilizing an equal degradation theory and equipment risks. According to the invention, the equal degradation theory is introduced into the power industry, analysis and comparison are performed on changes in equipment risk before and after maintenance by sufficiently considering changes in equipment failure probability before and after maintenance, and the equipment maintenance cost is considered so as to acquire an optimal maintenance scheme. The power equipment maintenance decision-making method starts from the view of asset management, the cost required by equipment in the whole life cycle is enabled to reduce to minimum, and a balance point is found between self values of the equipment and economic benefits brought by the equipment to a system, between LCCM (Life Cycle Costing Management) and equipment maintenance and between technologies and management of the power system.

Description

technical field [0001] The invention relates to a decision-making method for maintenance of electric equipment, in particular to a decision-making method for maintenance of electric equipment using the theory of equal degradation and equipment risk. Background technique [0002] The term "asset management" is now being used to describe one of the most challenging problems in the power industry. Asset management involves the investment, operation, maintenance, replacement and eventual decommissioning of power equipment, including power generation, transmission, and distribution equipment. The reduced reliability of capital investment prevents companies from investing in new equipment and forces companies to overhaul and operate aging equipment. At present, maintenance methods can be basically divided into two categories: after-failure maintenance and preventive maintenance. The preventive maintenance can be further divided into three categories: periodic maintenance, condit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 黄欢赵立进黄良曾华荣毛先胤杜昊龚庆武乔卉刘栋李俊雄
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap