Space strong electric field measurement system based on electro-optic secondary effect
A secondary effect and measurement system technology, applied in the direction of electrostatic field measurement, can solve the problems of bulky, complex system, and low measurement accuracy, and achieve the effects of high measurement accuracy, high measurement accuracy, and strong anti-interference ability
Active Publication Date: 2018-06-19
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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[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 effect for a series of shortcomings such as complex system, large volume, and low measurement accuracy in the traditional space electric field measurement technology.
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[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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The invention belongs to the field of space electric field measurement, and provides a space strong electric field measurement system based on the secondary electro-optic Kerr effect, aiming at a series of deficiencies in the traditional space electric field measurement technology, such as complex system, large volume, and low measurement accuracy. The system has high accuracy and response speed under the measurement of strong electric field in space, and can realize multi-point simultaneous measurement and non-destructive measurement; it includes a laser generator for generating laser light; an optical beam splitter unit for outputting the laser generator The laser is divided into at least 2 beams; the Kerr sensor receives the laser light from the beam splitting unit of the optical path, and makes the laser beam output after passing through the Kerr cell unit; the photodetector detects the optical signal output by the Kerr sensor and converts it into an electrical signal signal; and an information collection and processing unit, which calculates and obtains the space electric field according to the electric signal output by the photodetector.
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...
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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