Transformer calibrator and calibration method thereof

Abstract

Testing instruments for comparing two digital signals to obtain error data do not exist at present, and meanwhile, special calibrators for detecting electronic transformers outputting low voltage signals do not exist at present either. The invention discloses a calibrator which can be simultaneously applicable to detecting the electronic transformers and traditional transformers from multiple manufacturers. The calibrator is characterized in that digital signal input ends and analog alternating current signal input ends are arranged on the calibrator body; at least two digital signal channels and at least two analog signal channels are installed in the calibrator body; the analog signal channels comprise programmable amplifying circuits, self-calibration circuits, high-speed frequency division sampling hold circuits and high-speed A / D measuring circuits; the digital signal channels comprise photoelectric signal conversion modules; and synchronizing signal generators and receivers are arranged between the signal channels. The calibrator can satisfy standard error tests of the traditional transformers and the electronic transformers simulating low voltage output and digital quantity output.

Description

technical field [0001] The invention relates to a calibrator which is applicable to the detection of multi-manufacturer's electronic transformers and traditional transformers and conforms to the IEC61850-9-1 / 2 protocol. Background technique [0002] Since the basic error of metering transformers involves the accuracy and fairness of energy metering gateway trade settlement, with the rapid development of smart grids and the popularization and application of electronic transformers, the error test of electronic transformers has attracted more and more attention from all parties. Electronic transformers output digital signals or low-voltage analog signals, which cannot be detected by traditional transformer calibrator. [0003] At present, although the output of electronic transformers produced by various domestic manufacturers conforms to the IEC61850-9-1 / 2 protocol, there are still differences in relevant parameters and message fields, which leads to the fact that the transfo...

AI Technical Summary

Problems solved by technology

With the development of technology, standard electronic transformers have appeared. At present, there is no test instrument that compares two digital signals to obtain error data.

At the same time, corresponding to the electronic transformer that outputs low-voltage signals, there is currently no special calibrator that can detect

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