A method of evidence fusion and set pair analysis for transformer aging condition assessment

A technology of aging state and evidence fusion, which is applied in the fields of instruments, electrical digital data processing, design optimization/simulation, etc.

Pending Publication Date: 2018-12-25
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies of the prior art, provide an evidence fusion and set pair analysis method for the evaluation of the aging state of transformers, and aim at how to deal with the big data problems involving many types, large quantities, and complex relationships involved in the evaluation of the aging state of transformers , based on the establishment of a large database, the principle of evidence fusion and set pair analysis is used to process and analyze the large data; for the random and fuzzy uncertain parameters involved in the evaluation of the transformer aging state, the probabilistic fuzzy set theory is used to process and analyze

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  • A method of evidence fusion and set pair analysis for transformer aging condition assessment
  • A method of evidence fusion and set pair analysis for transformer aging condition assessment
  • A method of evidence fusion and set pair analysis for transformer aging condition assessment

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Embodiment Construction

[0064] The specific implementation manners of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0065] Such as figure 1 As shown, an evidence fusion and set pair analysis method for transformer aging state assessment includes the following steps:

[0066] S1: Build a transformer feature class dataset;

[0067] The health state characteristic class describes the combination of several parameter characteristic values ​​when the transformer enters the aging state. Collect parameters and their characteristic values ​​involved in transformer aging state assessment from historical operation data, detection and monitoring data or public literature (journal papers, dissertations, etc.);

[0068] S1-1: by oil medium loss, water content in oil, gas content in oil, oil breakdown voltage, oil volume resistivity, oil conductivity, acid value in oil, oil breakdown voltage, furfural content in oil, oil color, etc. e...

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Abstract

The invention relates to an evidence fusion and set pair analysis method for evaluating the aging state of a transformer, comprising the following steps: S1, constructing a transformer characteristicclass data set; S2, constructing a transformer t class data set; S3, constructing a correlation function between a transformer test class and a feature class data set; S4: constructing a mass function; S5, constructing a BPA output function; S6: transformer aging condition evaluation. By processing the aging state characteristic data and the experimental data of the transformer with random uncertainty, the correlation function and BPA output function with the same spatial structure can be constructed to evaluate the aging state of transformers and reflect the uncertainty of the eigenvalue of the aging state of transformers, which provides theoretical guidance for the evaluation of the aging state of transformers and necessary technical support for the operation and maintenance of distribution networks.

Description

technical field [0001] The invention relates to the technical field of power systems and automation thereof, in particular to an evidence fusion and set pair analysis method for transformer aging state assessment. Background technique [0002] Subsequent maintenance and regular planned maintenance of traditional distribution network main equipment often require a lot of manpower and material resources, and the cost performance of maintenance is not high. With the improvement of equipment automation, the failure mode of time-related equipment only accounts for 6% of all failure modes of equipment, so the time-based periodic maintenance strategy is only effective for 6% of equipment failure modes. Based on regular maintenance combined with experience to determine the maintenance method to extend or shorten the maintenance cycle, and achieved certain results. [0003] With the increasing number of power equipment, the relationship between equipment is becoming more and more co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/04G06F30/20
Inventor 吴杰康
Owner GUANGDONG UNIV OF TECH
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