Intelligent current and voltage transformer verifying unit

Abstract

The invention discloses an intelligent current and voltage transformer verifying unit, comprising a current / voltage source, a check meter, a host computer CPU, and a display control interface. The current / voltage source is used for simultaneously providing a current / voltage source for a standard transformer and a detected transformer; the check meter is internally provided with a standard transformer and a verification module; the standard transformer comprises a standard current transformer and a standard voltage transformer, and simultaneously sends output signals of the standard transformer and the detected transformer to the verification module; the host computer CPU compares uploaded signals of the standard transformer and the detected transformer, obtains a ratio error and an angle error, and presets comparison parameters and displays comparison result information through the display control interface. The intelligent current and voltage transformer verifying unit integrates the standard current transformer and the standard voltage transformer, can test a routine electromagnetic current / voltage transformer as well as an analog output electronic current / voltage transformer, and overcome the disadvantage of single function of a routine check meter, and has the characteristic of simple and reasonable structure, powerful test function, and high integrated level.

Description

technical field [0001] The invention belongs to the field of calibration of power system metering equipment, and specifically refers to an intelligent current voltage transformer calibration device. Background technique [0002] The transformer calibrator is mainly used to verify the technical performance of the voltage transformer and current transformer used in the field or in the laboratory. my country's transformer calibrator can be roughly divided into three generations: the first generation of electrical calibrator, the operation is cumbersome, the wiring is complicated; the second generation calibrator adopts more advanced electronic circuits, which is more convenient to use than the previous generation calibrator, However, it is necessary to switch the range gear frequently during the measurement process, and there is little information displayed during the test process; most of the third-generation calibrator uses a single-chip microcomputer, which improves the intel...

AI Technical Summary

Problems solved by technology

[0003] In view of the above technical problems, the present invention provides an intelligent current voltage transformer calibration device, which integrates standard current transformers and standard voltage transformers, which can not only realize the testing of conventional electromagnetic current / voltage transformers, but also realize The test of the electronic current / voltage transformer with analog output overcomes the shortcoming of the single function of the conventional calibrator; the structure is simple and reasonable, the test function is powerful, and the integration is high

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