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Method for calculating failure rate of parallel transformer power supply system

A technology for power supply systems and transformers, which is used in instruments, measurement of electricity, measurement of electrical variables, etc., and can solve problems such as low evaluation accuracy, over-repair or disrepair, etc.

Active Publication Date: 2018-09-14
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is used to solve the problems that the traditional method uses experience, a small number of parameters or data, which may easily cause low evaluation accuracy and lead to over-repair or disrepair.

Method used

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  • Method for calculating failure rate of parallel transformer power supply system
  • Method for calculating failure rate of parallel transformer power supply system
  • Method for calculating failure rate of parallel transformer power supply system

Examples

Experimental program
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Embodiment 1

[0033] Such as figure 1As shown, a method for calculating the failure rate of parallel transformer power supply system, the failure of parallel transformer power supply system depends on the abnormal change characteristics of gas and capacitance elements inside the transformer, and the failure probability of parallel transformer power supply system is determined by the abnormal change characteristics of gas and capacitance elements inside the transformer Calculated and determined according to the principle of probability, among them, gas elements include: H2 content, C2H2 content, C2H6 content, C2H4 content, CH4 content, relative gas production rate of CO, relative gas production rate of CO2, total hydrocarbons; capacitor elements include: high-voltage side A phase Capacitance value, high-voltage side B-phase capacitance, high-voltage side C-phase capacitance, low-voltage side a-phase capacitance, low-voltage side b-phase capacitance, low-voltage side c-phase capacitance; The ...

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Abstract

The invention relates to the field of electric power systems and automation thereof, in particular to a method for calculating the failure rate of a parallel transformer power supply system. Big dataare processed and analyzed with a data clustering principle on the basis of establishment of a big database; as for random and fuzzy uncertainty parameters related to estimation of fault state of a transformer, processing and analysis are performed with a theory of a probabilistic fuzzy set. By means of the method for calculating the failure rate of the parallel transformer power supply system, the fault state of the transformer can be evaluated, the uncertainty of feature values of the fault state of the transformer is reflected, theoretic guidance is provided for estimation of the fault state of the transformer, and necessary technical support is provided for operation and maintenance of a power distribution network.

Description

technical field [0001] The invention relates to the field of electric power system and its automation, in particular to a method for calculating the failure rate of a parallel transformer power supply system. Background technique [0002] There are a large number of transformers, and there will be different degrees of deterioration, deterioration, and defects, which are familial and concealed, and it is difficult to detect and evaluate them in time. Due to the great differences in the operating years, environment, maintenance, etc. and the influence of many factors, the difficulty and complexity of the evaluation of the deterioration state of the transformer operation are increased, and it cannot meet the higher requirements of precise and intelligent evaluation. [0003] Traditionally, the fault status of transformers is mostly evaluated by calculating and analyzing data of a single factor such as dissolved gas in oil. A single parameter or a small amount of data can easily...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 陶飞达吴杰康曾振达邹志强张丽平黄智鹏杨夏
Owner GUANGDONG POWER GRID CO LTD
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