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Transformer calibrator and calibration method thereof

A transformer calibrator and transformer technology, applied in the field of calibrator, can solve the problems of no special calibrator, no comparison error data of two digital signals, etc., and achieve system stability and strong anti-interference ability, functional Comprehensive, accurate and reliable results

Active Publication Date: 2011-04-13
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Transformer calibrator and calibration method thereof
  • Transformer calibrator and calibration method thereof
  • Transformer calibrator and calibration method thereof

Examples

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Embodiment Construction

[0029] Such as figure 1 The transformer calibrator shown has a digital signal input terminal and an analog AC signal input terminal on the body, and two digital signal channels and two analog signal channels are installed in the body, and the analog signal channels are composed of a program-controlled amplifier circuit, It is composed of a self-calibration circuit, a high-speed frequency division sampling and holding circuit and a high-speed A / D measurement circuit, and the digital signal channel includes a photoelectric signal conversion module. A sync signal generator and a receiver are installed between the signal channels. The sync signal generator and the receiver convert electrical signals and optical signals through the Agilent HFBR chip. Frequency sampling and holding circuit and high-speed A / D measurement circuit. At the same time, the synchronous optical signal is transmitted to the merging unit of the transformer under test through optical fiber. The synchronous sig...

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PUM

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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 channelsand 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 quantityoutput.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 白卫平许灵洁周永佳李航康朱重冶
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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