Electro-optic quadratic effect-based spatial strong electric field measurement system

A secondary effect and measurement system technology, applied in the direction of electrostatic field measurement, can solve problems such as low measurement accuracy, bulky size, and complex system, and achieve the effects of high measurement accuracy, high measurement accuracy, and strong anti-interference ability

Active Publication Date: 2015-12-30
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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  • Abstract
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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a space strong electric field measurement system based on the secondary electro-optical Kerr

Method used

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  • Electro-optic quadratic effect-based spatial strong electric field measurement system
  • Electro-optic quadratic effect-based spatial strong electric field measurement system
  • Electro-optic quadratic effect-based spatial strong electric field measurement system

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Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below.

[0035] Space strong electric field measurement system based on electro-optic secondary effect, including

[0036] The laser generator is used to generate laser light; the laser generator of this embodiment can emit monochromatic polarized laser light with a wavelength of 600-780nm, and the power meets the requirements of 2.5-7.5mW

[0037] Optical path beam splitting unit, used to divide the laser output from the laser generator into 3 beams;

[0038] The number of Kerr sensors is 3, which respectively receive the laser light from the beam splitting unit of the optical path, and make the laser beam output after passing through the Kerr cell unit;

[0039] The photodetector adopts an array photodetector, and the quantity is 3, which are used to respectively detect the o...

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Abstract

The invention belongs to the spatial electric field measurement field and provides a quadratic electro-optic Kerr effect-based spatial strong electric field measurement system. The objective of the invention is to eliminate the defects complexity, large size and low measurement accuracy of a traditional spatial electric field measurement technology. The system has high precision and high response speed under spatial strong electric field measurement, and can realize multipoint simultaneous measurement and nondestructive measurement. The system includes a laser generator used for generating laser, an optical path beam splitting unit used for splitting laser outputted by the laser generator into at least two beams, Kerr sensors which receive laser split by the optical path beam splitting unit and make the laser beams pass through Kerr cell units and outputted, photoelectric detectors which detect optical signals outputted by the Kerr sensors and convert the optical signals into electrical signals, and an information acquisition and processing unit which calculates a spatial electric field according to the electrical signals outputted by the photoelectric detectors.

Description

technical field [0001] The invention belongs to the field of space electric field measurement, in particular to a fast measurement system for strong electric field in air. Background technique [0002] The measurement of the space electric field in the air is widely used in the fields of scientific research and engineering technology research. In the power industry, electric field measurement can be used for power system status monitoring and electric field distribution measurement inside and outside electrical equipment. During the long air gap discharge process, the accurate and effective measurement of the space electric field is beneficial to the selection of the insulation distance of UHV transmission lines. In electrical equipment, through the measurement of the space electric field, the insulation condition of the equipment can be effectively judged, and the insulation coordination can be better carried out. Therefore, it is necessary to study the measurement method...

Claims

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Application Information

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IPC IPC(8): G01R29/14
Inventor 彭庆军司马文霞张少泉袁涛陈晓云许航
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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