Polymer surface charge and trap level characteristic measuring device and method

A technology of trap energy level and surface charge, applied in measurement devices, electrostatic field measurement, components of electrical measurement instruments, etc., can solve problems such as dielectric performance degradation, system insulation failure, electrical equipment damage, etc., to reduce the charge Dissipative effects, time-saving, space-saving effects

Pending Publication Date: 2018-08-24
SHENYANG POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As the voltage further increases, the insulating material is polarized, the dielectric properties are greatly reduced, and the system insulation fails, causing damage to electrical equipment and accidents.

Method used

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  • Polymer surface charge and trap level characteristic measuring device and method
  • Polymer surface charge and trap level characteristic measuring device and method
  • Polymer surface charge and trap level characteristic measuring device and method

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Embodiment Construction

[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] Such as figure 1 As shown, this embodiment provides a device for measuring the characteristics of polymer surface charges and trap energy levels, including a high-voltage power supply, a protective resistor 1, a low-voltage power supply, a sealed air chamber 2, a high-voltage charging device and a potential measuring device. Among them, the high-voltage charging device includes a voltage equalizing ring 3, a high-voltage electrode 4, a needle electrode 6, a grid plate electrode 7, a grid electrode lead wire 8, an insulating support 9, an insulating sample 10, a flat plate electrode 11, a rotating connection guide rod 12, a support Rod 13, insulating baffle plate 14...

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Abstract

The invention provides a polymer surface charge and trap level characteristic measuring device and method and relates to the technical field of surface charge measurement of solid insulating materials. The measuring device comprises a high-voltage power source, a protection resistor, a low-voltage power source, a sealed air chamber, a high-voltage charging device and a potential measuring device.The measuring method comprises the steps: firstly, the high-voltage power source is connected with a needle electrode through the protection resistor, a gate electrode is connected with the low-voltage power source, charges are injected into a test sample slice of the insulating material, a power supply is cut off after charging finishes, a probe moving guiding rod is utilized to move a probe to be above a test sample, rotation of a rotary connection guiding rod is matched to drive the test sample to achieve full-plane potential measurement on the test sample, a change curve of the potential along with resolution time is drawn, and a mathematic formula is utilized to calculate and analyze charge trap level distribution of a gas-solid interface. The measuring device and method disclosed bythe invention can be suitable for surface charge measurement and trap level distribution researches of gas-solid interfaces under different voltage form types, different solid insulating materials anddifferent insulating gases; a measuring range is wide.

Description

technical field [0001] The invention relates to the technical field of surface charge measurement of solid insulating materials, in particular to a device and method for measuring polymer surface charge and trap energy level characteristics. Background technique [0002] Insulating materials have excellent electrical insulation properties, high resistivity, low dielectric loss, and high electrical breakdown strength, so they are widely used in electrical and electronic equipment, nuclear reactors, and space stations. For general electrical equipment, in an electrical system composed of metal conductors, insulating materials and gases, when a certain voltage is applied to the conductor, a space electric field will be formed near it. Once the electric field reaches a critical value, it will cause a flashover of the insulating material and surface discharge. As the voltage further increases, the insulating material will be polarized, the dielectric properties will be greatly r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24G01R29/14G01R31/12G01R1/02
CPCG01R1/02G01R29/14G01R29/24G01R31/1263
Inventor 厉伟林莘王文杰葛凡周旭东李晓龙温苗翟芷萱
Owner SHENYANG POLYTECHNIC UNIV
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