Electronic transformer calibration system and calibration method thereof
An electronic transformer and calibration system technology, which is applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve the problems of costing staff, a lot of time and energy, and complex transformers, so as to improve the calibration accuracy and simplify the calibration process , small size effect
Inactive Publication Date: 2019-07-16
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology
[0006] The calibration process of existing transformers is relatively complicated, and requires the joint action of many factors to complete. The calibration can only be completed by adjusting the balance of the circuit. This process is very complicated and requires a lot of time and energy for the staff.
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[0039] The disclosure will be further described below in conjunction with the drawings and embodiments.
[0040] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present disclosure. Unless otherwise indicated, all technical and scientific terms used in the present disclosure have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs.
[0041] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, s...
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The invention discloses an electronic transformer calibration system and a calibration method thereof. Circuit balance does not need to be adjusted, the process is simple, the purpose of multistage DCelectronic transformer calibration can be met, and the calibration accuracy is improved. The system comprises a high-voltage generating device, a standard signal sampling device, a calibrated signalsampling device and a data processing platform. The high-voltage generating device is used for generating high-voltage signals which are sequentially output to a primary side of a standard transformerand a calibrated electronic transformer; the standard signal sampling device is used for sampling a secondary side output signal of the standard transformer and uploading the sampled signal to the data processing platform; the calibrated signal sampling device is used for sampling the output signal of the secondary side of the tested electronic transformer and uploading the sampled signal to thedata processing platform; and the data processing platform is used for comparing the output data of the standard transformer and the output data of the calibrated transformer at the same time according to the received output data of the standard transformer and the output data of the calibrated transformer, and calculating the ratio difference and the phase difference of the calibrated transformer.
Description
Technical field [0001] The present disclosure relates to the field of electronic transformer calibration, and in particular to an electronic transformer calibration system and calibration method. Background technique [0002] With the continuous development of science and technology in our country, the currently widely used electronic transformer has been favored by many power users and manufacturers, and its application in relay protection signal sources and power system measurement has become more and more extensive development trend. [0003] The electronic transformer is an instrument composed of one or more voltage or current sensors connected to the transmission system and the secondary converter. The electronic transformer has the characteristics of no magnetic saturation, wide frequency response range, good dynamic characteristics, simple insulation structure, and no secondary open circuit or short circuit hidden dangers. It fundamentally solves the current and voltage sig...
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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 刘涛李文康刘子彦徐纪太张联邦张艺丹
Owner STATE GRID SHANDONG ELECTRIC POWER