Electronic transformer state evaluation method

Abstract

The invention belongs to the technical field of electronic transformers, and discloses an electronic transformer state evaluation method, which comprises the following steps of S1, establishing a state evaluation hierarchical model of an electronic transformer, and listing state quantities corresponding to functional units, S2, establishing a state quantity score deduction model, S3, calculating astate score Si of each functional unit, and S4, calculating an overall state score S of the electronic transformer. The state score Si and the overall state score S of each functional unit of the electronic transformer can be quantitatively analyzed; the fault rate and the reliability when the overall state score is S can be calculated, weak links of the electronic transformer can be found easily, maintenance and daily maintenance of the electronic transformer can be guided, a reference basis can be provided for selection of the electronic transformer, and reliability calculation of the electronic transformer is the basis of equipment risk assessment and maintenance plan arrangement.

Description

technical field [0001] The invention belongs to the technical field of electronic transformers, in particular to a state evaluation method of electronic transformers. Background technique [0002] At present, the only way to know the operation status and reliability of electronic transformer is preventive test. The contents of the preventive test generally only include the inspection of appearance, terminal mark and nameplate parameters, as well as the test of polarity, zero drift and accuracy. The test results are compared with the allowable range, and the conclusions are only qualified or unqualified. For the daily maintenance and operation status analysis of electronic transformers, there are still the following deficiencies: [0003] 1) The preventive test is carried out periodically, generally with a long interval, such as 3 years, which does not meet the development requirements of condition-based maintenance of smart substations, and it is difficult to guide daily ma...

AI Technical Summary

Problems solved by technology

[0003] 1) The preventive test is carried out periodically, generally with a long interval, such as 3 years, which does not meet the development requirements of condition-based maintenance of smart substations, and it is difficult to guide daily maintenance;

[0004] 2) The state analysis of the electronic transformer in the preventive test is not comprehensive enough, and the test results are too abstract and general, so it is difficult to analyze the change trend of the operating state

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