Calibrating test device of electronic type transformer checking instrument

Abstract

The invention provides a calibrating test device of an electronic type transformer checking instrument, comprising a power-frequency proportion power supply, a standard A / D converter, a synchronous-pulse generating device, a packet software processing device and a checked electronic type transformer checking instrument, wherein the power-frequency proportion power supply comprises an error display unit, a standard small-signal output unit, a standard current or voltage signal output unit and an output control unit; and the checked electronic type transformer checking instrument comprises a standard signal input unit of the checked electronic type transformer checking instrument, a synchronous clock input unit of the checked electronic type transformer checking instrument, a measured analog quantity input unit of the checked electronic type transformer checking instrument and a measured digital quantity input unit of the checked electronic type transformer checking instrument. The device not only can conduct a global error calibrating test on the calibrating function of the analog quantity of the electronic type transformer checking instrument, but also can conduct a global error calibrating test on the calibrating function of the digital quantity of the electronic type transformer checking instrument, and fill the blank of the field.

Description

technical field [0001] The invention relates to a calibration test device for an electronic transformer calibrator, which belongs to the field of calibration, verification and detection of the electronic transformer calibrator. Background technique [0002] Electronic transformers are decisive equipment for building digital substations and play a vital role. Many manufacturers at home and abroad have launched electronic transformer products. There are many types of electronic transformer products on the market, and the product quality is also uneven. However, due to the lack of corresponding calibration methods, electronic transformer products have not been reliably calibrated. Many manufacturers use their own electronic transformer calibrator to calibrate their electronic transformers. The calibration test itself is not satisfied, which is a serious hidden danger to the safe operation of the power system. This has become a bottleneck in the promotion of electronic transfo...

AI Technical Summary

Problems solved by technology

However, due to the lack of corresponding calibration methods, electronic transformer products have not been reliably calibrated. Many manufacturers use their own electronic transformer calibrator to calibrate their electronic transformers. The calibration test itself is not satisfied, which is a serious hidden danger to the safe operation of the power system

This has become a bottleneck in the promotion of electronic transformers, restricting the development of digital substations in China, and affecting the construction process of a unified and strong smart grid

[0003] At present, the existing calibrator inspection system is mainly used for the calibration test of the traditional transformer calibrator, which cannot meet the calibration requirements of electronic transformers, such as Chinese patent 200810007590.5 "Full-automatic transformer calibrator inspection system" , for the detection of traditional transformer testers, because the output mode of electronic transformers is different from traditional ones, traditional calibrators cannot measure, so the whole inspection system cannot test electronic transformer calibrator

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