A Method for Evaluating the Deterioration State of Transformer Insulating Oil

A technology of transformer insulating oil and degraded state, which is used in instruments, data processing applications, digital data information retrieval, etc.

CN108681835BActive Publication Date: 2021-11-19GUANGDONG UNIV OF TECH
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-11-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for evaluating the deterioration state of transformer insulating oil, the steps are as follows: firstly, construct the data sets of transformer insulating oil feature class, insulating paper feature class, gas feature class, temperature feature class, capacitance feature class, partial discharge feature class and Calculate the corresponding probability value; then, calculate the average value of the characteristic values ​​of oil, paper, gas, temperature, capacitance, and partial discharge that reflect the deterioration state of the transformer insulating oil; then, construct the evaluation function of the deterioration state of the transformer insulating oil; finally, carry out the transformer Evaluation of the deterioration state of the insulating oil; the present invention can evaluate the deterioration state of the transformer insulating oil, reflecting the uncertainty of the characteristic value of the deterioration state of the transformer insulating oil, providing theoretical guidance for the evaluation of the deterioration state of the transformer insulating oil, and providing necessary information for the operation and maintenance of the distribution network. technical support.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of power systems and automation thereof, in particular to a method for evaluating the degradation state of transformer insulating oil. 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 complex, the ...

Examples

Embodiment Construction

[0075] The specific implementation manners of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0076] Such as figure 1 As shown, a method for evaluating the deterioration state of transformer insulating oil includes the following steps:

[0077] S1: Construct the data set of the characteristic class of transformer insulating oil and calculate the probability value:

[0078] Transformers are built from oil dielectric loss, oil water content, oil gas content, oil breakdown voltage, oil volume resistivity, oil conductivity, oil acid value, oil breakdown voltage, oil furfural content, oil color, etc. Insulating oil feature class data set x SO for:

[0079]

[0080] where x SO1 、x SO2 、x SO3 ,..., For transformer oil dielectric loss, water content in oil, gas content in oil, oil breakdown voltage, oil volume resistivity, oil conductivity, acid value in oil, breakdown voltage in oil, total acid val...