Method for determining maintenance sequence of multiple transformers

Abstract

The invention discloses a method for determining a maintenance sequence of multiple transformers. The method comprises the following steps: 1) collecting state grades, defect types, maintenance manners, maintenance expenses F and current failure rates of to-be-maintained transformers in a certain region as input parameters; 2) determining enlistment age backspacing factors of different maintenance manners, and calculating the failure rates of the to-be-maintained transformers before and after the maintenance through an enlistment age backspacing method; 3) calculating the maintenance expense Ei required by the ith to-be-maintained transformer for reducing the unit failure rate by taking the maintenance expense E for reducing the unit failure rate after the transformer maintenance as an evaluation index, and arranging the maintenance sequence of the to-be-maintained transformers from small to big according to Ei. According to the method, the maintenance and measurement are determined by utilizing the importance of different transformers in an electric power system, the severity of the defects and the urgent degree of the maintenance work, so that the transformers which are more important and have more severe defects can be timely arranged to be maintained firstly, and then the maintenance efficiency is improved. The method disclosed in the invention is capable of providing beneficial references for the electric equipment operation and maintenance strategies.

Description

technical field [0001] The invention relates to the field of condition maintenance of electric equipment, in particular to a method for determining the maintenance sequence of multiple transformers. Background technique [0002] The power transformer is the core of energy conversion and transmission in the power grid, and is one of the most important and critical equipment in the power grid. The failure of the transformer during operation will cause damage to the equipment and interruption of the power supply of the power system, causing huge power failure losses. Timely maintenance of faulty or defective transformers can effectively reduce the failure rate of transformers, and is of great significance to ensure the reliability of power supply in power systems. [0003] The traditional maintenance method centered on the health status of equipment treats all transformers equally, that is, when a defect occurs in the equipment, the maintenance work is started immediately. Th...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the maintenance strategy centered on the equipment health state cannot arrange the priority maintenance of high-importance equipment, and proposes a method for determining the maintenance sequence of multiple transformers. The technical solution is as follows:

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