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Ageing testing device and method for insulating paper of power transformer

A power transformer, aging test technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of difficult operation, trauma of solid insulation system, etc., and achieve the effect of simple operation

Active Publication Date: 2014-09-17
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has limitations and is not easy to operate. During the sampling process, the power must be cut off and the oil must be drained, which will also damage the solid insulation system. After the sampling is completed, the sampling place must be repaired and strengthened.

Method used

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  • Ageing testing device and method for insulating paper of power transformer

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a power transformer insulating paper aging test device includes an oil tank 1, a radiator 2 and a circulating pump 3; the bottom of the oil tank is provided with an oil outlet 4 and an oil inlet 5;

[0025] The oil outlet 4 of the fuel tank is connected with the inlet of the radiator 2 through a pipeline, the outlet of the radiator 2 is connected with the inlet of the circulation pump 3, and the outlet of the circulation pump 3 is connected with the oil inlet 5 of the fuel tank through a pipeline. A circulation channel is formed among the oil tank 1, the radiator 2 and the circulation pump 3;

[0026] The inside of the fuel tank is provided with a cylindrical insulating paper support 6, the insulating paper support is fixed in the fuel tank through connecting rods, and heating and temperature control units 7 are distributed on the sur...

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Abstract

The invention discloses an ageing testing device for insulating paper of a power transformer. The ageing testing device comprises an oil tank, a heat radiator and a circulating pump, wherein an oil outlet and an oil inlet are formed in the bottom of the oil tank; a circulating channel is formed among the oil tank, the heat radiator and the circulating pump; the oil tank is internally provided with an insulating paper bracket with a cylinder structure; the insulating paper bracket is fixedly arranged in the oil tank through a connection rod; heating temperature control units are uniformly distributed on the surface of the insulating paper bracket; an oil taking opening for sampling is formed in the side face of the oil tank. The ageing testing device and the ageing testing method for the insulating paper of the power transformer have the characteristics of simplicity in operation, capability of simulating the operation state of solid insulation in the transformer, capability of improving the operation temperature of the solid insulation in oil to accelerate ageing, capability of simultaneously determining a mathematic relation between an oil-soluble ageing product (the content of furfuraldehyde in the oil) and an ageing state (the polymerization rate of the insulating paper) of the solid insulation and the like.

Description

technical field [0001] The invention relates to an aging test device and method for insulating paper of a power transformer, belonging to the technical field of power system machinery. Background technique [0002] At present, the measurement of the degree of polymerization of insulating paper in power transformers is the most direct method to evaluate the aging state of solid insulation. However, this method has limitations and is not easy to operate. During the sampling process, the power must be cut off and the oil must be drained, which will also damage the solid insulation system. After the sampling is completed, the sampling place must be repaired and strengthened. Using the power transformer insulation paper aging test method can simulate the operating environment of the solid insulation in the transformer, and accelerate the aging of the solid insulation in the transformer by increasing the temperature, so as to achieve the effect of rapid aging of the insulation pap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 朱洪斌余翔张建国陈大兵刘建军李成钢张廼龙张春燕
Owner STATE GRID CORP OF CHINA
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