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Method for establishing electrical device failure rate correction model considering overhaul influence

A technology for electrical equipment and model correction, which can be used in calculations, design optimization/simulation, electrical digital data processing, etc., and can solve problems such as the existence of repair effects

Inactive Publication Date: 2017-11-28
STATE GRID JIANGXI ELECTRIC POWER CO +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Although the maintenance work in the accidental failure period is not reflected in the accidental failure period, the repair effect still exists, and it still has a certain cumulative effect on the failure rate of the aging failure period, and the number of maintenance in the accidental failure period still needs to be considered

Method used

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  • Method for establishing electrical device failure rate correction model considering overhaul influence
  • Method for establishing electrical device failure rate correction model considering overhaul influence
  • Method for establishing electrical device failure rate correction model considering overhaul influence

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Embodiment Construction

[0045] At present, the establishment of the failure rate of electrical equipment in the process of grid reliability assessment does not consider the influence of various factors in the maintenance process. The existing electrical equipment failure rate model has simplified the impact of maintenance on the failure rate. The commonly used service age The regression factor is used to describe the impact of maintenance on the failure rate of equipment, but the fixed service age regression factor conceals the randomness of the reduction of equipment failure rate caused by maintenance. Therefore, although the service age regression method brings Simplified, but not quite accurate. Therefore, the present invention provides a correction model for the failure rate of electrical equipment that takes into account the influence of maintenance. The failure rate of electrical equipment during the accidental failure period is basically kept constant. The improvement effect of maintenance on i...

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Abstract

A method for establishing an electrical device failure rate correction model considering overhaul influence comprises the following steps that 1, failure rates of an electrical device at different operating stages are analyzed; 2, a random failure period failure rate model of the electrical device is established; 3, a quantitative model about the influence of overhaul on electrical device failure rates is established; 4, a failure rate model in an electrical device ageing expiry date is established. The problem that the influence of overhaul on electrical device failure rates is not considered in the power grid risk assessment process can be solved, the failure rate is corrected after the electrical device is overhauled each time, and the electrical device failure rate level is accurately mastered, so that device failure rate settings are more accurate in the power system reliability calculating process, and improvement of the accuracy of power grid risk assessment is promoted.

Description

technical field [0001] The invention relates to the field of electrical equipment reliability modeling considering the influence of maintenance on the failure rate of electrical equipment, specifically a correction model of the failure rate of electrical equipment considering the influence of maintenance, belonging to the field of electrical equipment reliability modeling. Background technique [0002] After the electrical equipment is put into use, the failure rate will increase year by year. In order to prevent the failure of electrical equipment due to the increase in the failure rate, which will lead to an increase in the risk of power system outages, it is necessary to carry out regular maintenance work on electrical equipment. [0003] The existing failure rate model of electrical equipment simplifies the impact of maintenance on the failure rate. The service age regression factor is commonly used to describe the impact of maintenance on the failure rate of equipment, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘松
Owner STATE GRID JIANGXI ELECTRIC POWER CO
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