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Multistage excitation high voltage proportional standard device

A standard device, high-voltage technology, applied in the direction of measuring devices, circuits, inductors, etc., can solve the problems of low voltage and low accuracy, and achieve the goal of increasing the voltage level, increasing the accuracy level, and reducing the excitation current Effect

Active Publication Date: 2022-07-01
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the present invention provides a multi-stage excitation high-voltage proportional standard device and a manufacturing method thereof, so as to solve the problems of low operating voltage and low accuracy of current voltage proportional standard devices

Method used

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  • Multistage excitation high voltage proportional standard device
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  • Multistage excitation high voltage proportional standard device

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Embodiment Construction

[0065] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of this thorough and complete disclosure invention, and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not intended to limit the invention. In the drawings, the same elements / elements are given the same reference numerals.

[0066] Unless otherwise defined, terms (including scientific and technical terms) used herein have the meanings commonly understood by those skilled in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal...

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Abstract

The invention discloses a multi-stage excitation high-voltage proportional standard device and a preparation method thereof. The device includes: a main standard voltage device, the main standard voltage device includes: a first iron core Core1, a second iron core Core2 and a third iron core Core3; wherein the second iron core Core2 is located in the first iron core; the The third core Core3 is located outside the first core; on the first side, the winding N2e is wound on the first core Core1; on the first side, it is simultaneously wound on the first core Core1 and the second core The winding N1e of the iron core Core2; the winding N2 wound on the first iron core Core1, the second iron core Core2 and the third iron core simultaneously on the second side opposite to the first side; the windings wound outside the winding N2 N1. The device has a high service voltage rating and accuracy rating.

Description

technical field [0001] The invention belongs to the technical field of electric power measurement standard equipment, and in particular relates to a multi-stage excitation high-voltage proportional standard device. Background technique [0002] There are two types of voltage transformers: field use and laboratory use. Field voltage transformers are called power voltage transformers; laboratory voltage transformers are used to calibrate field voltage transformers, which are called standard voltage transformers. The accuracy of standard voltage transformers is at least one or two levels higher than that of field voltage transformers. In addition, standard voltage transformers also have many accuracy classes. At present, the standard voltage transformer with the highest accuracy is called "power frequency voltage proportional standard device". [0003] With the engineering application of UHV transmission technology, the accurate measurement of UHV grid voltage has become a k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F38/26H01F27/24H01F27/28G01R35/02
CPCH01F38/26H01F27/28H01F27/24G01R35/02
Inventor 刘浩周峰殷小东刘俭袁建平陈松李志新
Owner CHINA ELECTRIC POWER RES INST
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