Shunt reactor fault diagnosis method based on Fuzzy-ART

Abstract

The invention discloses a shunt reactor fault diagnosis method based on Fuzzy-ART. The method comprises the steps of 1, arranging positions of vibration sensors according to a reactor structure and collecting vibration signals X(t) of a shunt reactor under different pre-tightening force states; 2, extracting the characteristic quantity of the vibration signals by means of a multi-scale arrangemententropy algorithm; 3, constructing a characteristic vector H according to the signal characteristic quantity extracted in step 2; 4, dividing the characteristic vector H obtained in step 3 into a test sample set and a training sample set, inputting the training sample set into a fuzzy-ART network, training the fuzzy-ART network, inputting the training sample set into the trained fuzzy-ART networkfor testing, and correspondingly judging the compaction state of a winding of the shunt reactor. The provided shunt reactor fault diagnosis method based on Fuzzy-ART has the advantages of better recognition effect and better performance.

Description

technical field [0001] The invention relates to a fuzzy-ART-based shunt reactor fault diagnosis method, which belongs to the technical field of power equipment state monitoring and fault diagnosis. Background technique [0002] At present, in the working process of large oil-immersed shunt reactors, various problems such as failure of the insulation layer, magnetic flux leakage and heating of the core, vibration, noise, and oil leakage from the fuel tank often occur. Among them, the vibration problem of the reactor is particularly prominent due to the influence of the magnetic field and electromotive force on the core and the winding, as well as its own structure. If the reactor continues to operate for a long time without avoiding and controlling the vibration, it will easily cause loosening of component links, wear and tear, and increase in operating resistance, which in turn will cause core and winding failures and excessive heat generation of equipment. The vibration pr...

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Problems solved by technology

[0002] At present, many problems such as insulation layer failure, core magnetic flux leakage heating, vibration, noise, and oil leakage from the fuel tank often occur in the working process of large-scale oil-immersed shunt reactors.

Among them, the vibration problem of the reactor is particularly prominent due to the influence of the magnetic field and electromotive force on the core and the winding, as well as its own structure. If the reactor continues to operate for a long time without avoiding and controlling the vibration, it will easily cause the loosening and wear of the component links and the increase of the running resistance, which will cause the failure of the iron core and winding, and the excessive heat generation of the equipment

The vibration problem of the reactor not only reduces the service life of the equipment, but also greatly increases the probability of power grid accidents

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