Transformer fault state evaluation method

A transformer fault and state assessment technology, applied to instruments, measuring electrical variables, measuring devices, etc., can solve problems such as complex interrelationships

Active Publication Date: 2018-10-19
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a transformer fault state evaluation method, aiming at how to deal with the big data problems involving many types, large quantities and complex relationships involved in the transformer fault state

Method used

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Embodiment Construction

[0073] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0074] figure 1 Step S1 in describes the process of data set construction and probability numerical calculation of transformer insulating oil feature classes:

[0075] Transformers are constructed from elements such as oil dielectric loss, water content in oil, gas content in oil, oil breakdown voltage, oil volume resistivity, oil conductivity, oil acid value, oil breakdown voltage, furfural content in oil, oil color and other elements Insulating oil feature class dataset x SO for:

[0076]

[0077] In the formula, 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, oil breakdown voltage, total acid value of oil, amount of furfural in oil, Oil color related dataset, N SO is the number of transformer oil...

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Abstract

The invention relates to a transformer fault state evaluation method comprising the steps of: firstly, constructing a data set of a transformer insulating oil characteristic class, an insulating papercharacteristic class, a gas characteristic class, a temperature characteristic class, a capacitance characteristic class, and a partial discharge feature class, and calculating a corresponding probability value; then, calculate the average value of oil, paper, gas, temperature, capacitance, and partial discharge characteristic values reflecting the fault state of a transformer; further, constructing a transformer fault state evaluation function; and finally, performing transformer fault state evaluation. The transformer fault state evaluation method can evaluate the fault state of the transformer, reflect the uncertainty of the characteristic value of the transformer fault state, provides theoretical guidance for the transformer fault state evaluation, and provide a necessary technical support for the operation and maintenance of a distribution network.

Description

technical field [0001] The present invention relates to the technical field of power system and automation thereof, in particular to a transformer fault state evaluation method. Background technique [0002] The post-event maintenance and regular planned maintenance of the main equipment of the traditional distribution network often require a lot of manpower and material resources, and the cost-effectiveness of maintenance is not high. With the improvement of equipment automation, the time-related equipment failure modes only account for 6% of all equipment failure modes, so the time-based periodic maintenance strategy is only effective for 6% of the equipment failure modes. The maintenance method of extending or shortening the maintenance cycle is decided by the combination of experience and regular maintenance, and has achieved certain results. [0003] With the increasing number of power equipment, the relationship between equipment is becoming more and more complex, the...

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 吴杰康
Owner GUANGDONG UNIV OF TECH
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