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Transformer insulating-paper deterioration evaluation method of considering running temperature influences

A technology of operating temperature and transformer, which is applied in the field of transformer insulation paper degradation evaluation considering the influence of operating temperature, and can solve the problems of complex relationship and large quantity

Inactive Publication Date: 2018-03-16
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aiming at how to deal with the big data problems involving many types, large quantities and complex interrelationships involved in the evaluation of the deterioration state of distribution transformer insulation paper, on the basis of establishing a large database, knowledge mining and reasoning principles are used to process and analyze big data; for power distribution The random and fuzzy uncertain parameters involved in the evaluation of the deterioration state of transformer insulating paper are processed and analyzed by using the theory of three-dimensional trapezoidal probability fuzzy set, and then the deterioration of transformer insulating paper is accurately evaluated

Method used

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  • Transformer insulating-paper deterioration evaluation method of considering running temperature influences
  • Transformer insulating-paper deterioration evaluation method of considering running temperature influences
  • Transformer insulating-paper deterioration evaluation method of considering running temperature influences

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Embodiment 1

[0083] figure 1 Step 1 in Step 1 describes the process and method of constructing a three-dimensional trapezoidal fuzzy set of historical data of transformer operating temperature. Obtain the relevant data information of the transformer operating temperature historical data from the power grid monitoring data platform, and according to the three-dimensional trapezoidal fuzzy set of the transformer operating temperature historical data:

[0084] T H =(T HL ,T HM ,T HU )=[(T HL1 ,T HL2 ,T HL3 ,T HL4 ;K HL ),(T HM1 ,T HM2 ,T HM3 ,T HM4 ;K HM ),(T HU1 ,T HU2 ,T HU3 ,T HU4 ;K HU )]

[0085] Where T H Is the three-dimensional trapezoidal fuzzy set of historical data of transformer operating temperature, T HL , T HM , T HU And k HL , K HM , K HU The three-dimensional trapezoidal fuzzy set lower bound, middle bound, upper bound fuzzy set and membership coefficient of the three-dimensional trapezoidal fuzzy set of the transformer operating temperature history data, T HLj , T H...

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Abstract

The invention relates to the fields of power systems and automation thereof, and particularly to a transformer insulating-paper deterioration evaluation method of considering running temperature influences. Three-dimensional trapezoidal fuzzy sets of transformer running temperature data are constructed; data of paper deterioration feature classes are fuzzified, membership functions are constructed, and three-dimensional trapezoidal fuzzy sets of the paper degradation feature classes are constructed; paper test data are fuzzified, membership functions are constructed, and three-dimensional trapezoidal fuzzy sets of paper test classes are constructed; and similarity functions between the probability fuzzy-sets of the test classes and the feature classes are constructed. According to the method, a theory of the three-dimensional trapezoidal probability fuzzy-sets is adopted for processing and analysis for random and fuzzy uncertainty parameters involved in distribution-transformer insulating-paper deterioration status evaluation, and then transformer insulating-paper deterioration is accurately evaluated.

Description

Technical field [0001] The invention relates to the field of power systems and their automation, and in particular to a method for evaluating the deterioration of transformer insulation paper considering the influence of operating temperature. Background technique [0002] The after-maintenance and regular scheduled maintenance of traditional distribution network main equipment often require a lot of manpower and material resources, and the cost of maintenance is not high. Statistical studies with a large amount of data show that with the improvement of equipment automation, the failure modes of time-related equipment only account for 6% of all equipment failure modes, so the time-based regular maintenance strategy is only effective for 6% of equipment failure modes . The maintenance method of extending or shortening the maintenance cycle based on regular maintenance combined with experience has achieved certain results. [0003] With the increasing number of power equipment, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/30G06N7/02
CPCG06F16/2468G06F30/367G06N7/023
Inventor 黄智鹏吴杰康陶飞达曾振达张丽平邹志强杨夏
Owner GUANGDONG POWER GRID CO LTD
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