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Organic electric field distributed control agent migration-based self-adaptive control electric field method

A technology of self-adaptive regulation and organic electric field, applied in the direction of organic insulators, circuits, electrical components, etc., can solve the problems such as the inability to distribute the electric field evenly, and achieve the effect of high engineering practical value, wide source and good compatibility

Inactive Publication Date: 2019-03-01
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0009] Although all the above technologies have alleviated the distortion of the electric field distribution to a certain extent, they cannot fundamentally solve the problem and achieve a uniform distribution of the electric field.

Method used

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  • Organic electric field distributed control agent migration-based self-adaptive control electric field method
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  • Organic electric field distributed control agent migration-based self-adaptive control electric field method

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Embodiment

[0024] 1. The selected electric field distribution regulating agent of experiment among the present invention is polar low-molecular polymer, has the polyethylene oxide ether of adjacent position phenolic hydroxyl, and its molecular formula is C 8 h 17 -C 6 h 4 -O-(CH 2 -CH 2 O) 50 -H.

[0025] 2. Mix polyethylene oxide ether with low-density polyethylene (LDPE) at a mass fraction of 2% in a dense mixer to obtain an unformed sample. After taking it out, cut an appropriate amount according to the size of the mold Place the sample in a flat vulcanizer, heat it up to 110°C, step up the pressure step by step according to 5MPa, 10MPa, and 15MPa at this temperature, and stay for 5 minutes at each pressurization, and finally place it in a flat water cooler to pressurize and cool to At room temperature, the non-crosslinked sheet polyethylene insulation sample required for the experiment was obtained.

[0026] 3. Carry out vacuum coating to the sheet-shaped insulating sample in ...

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Abstract

The invention discloses an organic electric field distributed control agent migration-based self-adaptive control electric field method, and belongs to the technical field of high-voltage insulation.A method which can be used for effectively suppressing distortion of an electric field in an insulation structure and homogenizing electric field distribution is provided. The working principle of themethod is in a way that a few amount of low molecular polymer containing benzene ring and an ether bond functional group or a non-free-radical scavenger voltage stabilizer is added into an insulationpolymer, the field-enhanced non-linear conductivity and polarization of a composite material can be improved, polar molecules migrate to form self-adaptive gradient distribution under driving of an electric field gradient force of a non-uniform electric field, so that the conductivity and the polarization of a high electric field region are improved, and the electric field intensity of the high electric field region is reduced. A control agent added into an insulation system is wide in source, is economic and available and has good compatibility with a polymer matrix, a homogenization effecton electric field distortion caused by any factor is achieved, and the control agent has favorable self-adaptive capability of controlling the electric field.

Description

technical field [0001] The invention relates to the technical field of high voltage and insulation, in particular to an adaptive electric field regulation method based on migration of an organic electric field distribution regulating agent. Background technique [0002] The insulation structure in power equipment is its weakest link, and the reliability of the insulation structure determines the safe and stable operation of power equipment. The distortion of the electric field distribution in the insulation structure causes the local electric field strength to be much higher than the average design field strength, and the local electric field is too high to cause partial discharge, and long-term partial discharge will seriously erode the insulating material and reduce its insulation performance. With the continuous improvement of the operating voltage level of power equipment, the problem of how to improve the electric field distortion in the electrical insulation structure ...

Claims

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Application Information

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IPC IPC(8): H01B7/02C08L23/06C08L71/02H01B3/44
CPCC08L23/06C08L2207/066H01B3/441H01B7/02C08L71/02
Inventor 李忠华万佳星
Owner HARBIN UNIV OF SCI & TECH
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