Three-dimensional power frequency electric field measurement method and device capable of correcting distortion of electric field
A power frequency electric field and distortion correction technology, applied in the fields of electromagnetic field characteristics, voltage/current isolation, etc., can solve the problems of reduced measurement accuracy, small sensor size, and deviation of measurement results from the true value
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Embodiment 1
[0051] Example 1 Three-dimensional power frequency electric field measuring device capable of correcting electric field distortion
[0052] Such as image 3 , 4 As shown, the device includes a three-dimensionally combined capacitive induction voltage sensor 11, an amplifier circuit 12, a filter circuit 13, a high-speed data collector 14, a central information processor 15, a GSM data communication module 16, a power supply circuit 17, a GSM communication module 21, Data processing software 22 and PC machine 23 are formed. Each electrode copper plate for electric field measurement is isolated with insulating plastic to ensure that each plate is physically independent of each other. The connecting wires are welded to the edge of the copper plate, and the solder joints should be as small and smooth as possible, and the edge of the copper plate is also polished to be smooth, which can prevent the induced voltage from appearing due to the uneven charge distribution caused by the ...
Embodiment 2
[0053] Example 2 Distortion Influencing Factor lambda the acquisition of
[0054] Calibration experiments were carried out in the parallel plate electrode uniform electric field generator. According to the national standard GB / T12720-1991, the distance d between parallel plates in the uniform electric field generating device should not be less than 1.5 times the side dimension of the probe; the distance between the edge of the sensor and any edge of the bottom plate should not be less than 2d; the distance between the parallel plate and the nearest ground The distance between them should be greater than 2d. The design area of the parallel plate is 1.5×1.5m, the thickness is 2mm, the distance d between the two plates is 0.5m, the sensor probe radius is 30mm, the ratio of the measuring electrode radius to the probe radius is fixed at 2 / 3, and the thickness of the electrode and the insulating medium is 1mm , the material property of the parallel plate electrode and the measur...
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