Calibration device and method capable of synchronously measuring multiple voltage transformers at one time

A technology for voltage transformers and transformer calibrators, which is applied to measuring devices, measuring electrical variables, instruments, etc., can solve problems such as danger and low work efficiency, and achieve the effects of work safety, simple wiring, and safe and reliable wiring.

Active Publication Date: 2012-01-04
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes about 10-15 minutes to complete the verification of a voltage transformer. Every time a voltage transformer is completed, it needs to be rewired. The work efficiency is low, and the wiring involves high voltage and there is a certain danger.

Method used

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  • Calibration device and method capable of synchronously measuring multiple voltage transformers at one time
  • Calibration device and method capable of synchronously measuring multiple voltage transformers at one time
  • Calibration device and method capable of synchronously measuring multiple voltage transformers at one time

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Embodiment Construction

[0037] Description of the marks in the figure: analog signal conditioner 1, multi-channel analog-to-digital converter 2, DSP controller 3, control logic and decoding 4, external memory 5, keys 6, simulation load 7, LCD liquid crystal display 8, Digital-to-analog converter DAC 9 , voltage regulation system 10 , and communication interface 11 .

[0038] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0039] The calibrating device for synchronously testing multiple voltage transformers in this embodiment includes a multi-channel transformer calibrator, a program-controlled voltage regulation system, a voltage booster, a standard voltage transformer, a transformer to be tested, a switchgear and a simulated load ;The program-controlled voltage regulation system is used to control the voltage of the booster, and is connected to the two input terminals of the booster...

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Abstract

The invention discloses a calibration device and a calibration method capable of synchronously measuring multiple voltage transformers at one time, and belongs to the technical field of metering tests of electric power. In order to solve the problems that the efficiency of measurement is extremely low, an operator frequently contacts high voltage and the safety of production is reduced because the conventional voltage transformer can only be independently measured, a method for combining a plurality of calibrated voltage transformers with a high-standard voltage transformer to form a comparison method circuit is used in the invention; a multi-channel transformer calibrator is used for directly acquiring a differential voltage signal between the plurality of calibrated voltage transformers and the high-standard voltage transformer; and the multiple voltage transformers can be synchronously measured at one time by calculation. By the calibration device, the working efficiency of measuring the voltage transformers by the operator is improved, and the high-voltage contacting frequency of the operator is reduced, so that more safe measurement is ensured. Therefore, the calibration device and the calibration method are major breakthrough in a voltage transformer calibration technology.

Description

technical field [0001] The invention relates to a device for synchronously measuring multiple voltage transformers, and also relates to a verification method for synchronously measuring multiple voltage transformers at one time, belonging to the technical field of electric power metering and testing. Background technique [0002] A large number of voltage transformers are produced and used in the field of electric high-voltage metering every year. The calibration wiring of voltage transformers is complicated and involves high voltage, which is dangerous. The voltage transformer calibration device is not only a precision instrument for detecting and measuring transformer errors The instrument is one of the important equipments to improve the production efficiency and safe production, and also one of the indispensable supporting equipments for the development of electric power industry. [0003] The traditional voltage transformer verification device consists of six parts: boo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 吴宏斌张林元张旭飞丁宙峰李磊
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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