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Device and method for checking electric transformer based on virtual instrument

A technology of power transformers and virtual instruments, applied in instruments, measuring devices, measuring electrical variables, etc., can solve the problems of bulky volume, poor adaptability, complex structure, etc., and achieve the effect of improving system performance, easy upgrade and replacement, and high precision

Active Publication Date: 2014-07-16
广西天天飞航空科技有限公司
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AI Technical Summary

Problems solved by technology

In order to solve the existing problems of complex structure, bulky volume, high cost and poor adaptability of the existing power transformer calibration device

Method used

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  • Device and method for checking electric transformer based on virtual instrument
  • Device and method for checking electric transformer based on virtual instrument

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Experimental program
Comparison scheme
Effect test

Embodiment

[0023] During specific implementation, it can be implemented according to the following steps:

[0024] a. Select a virtual instrument development platform: use LabVIEW of National Instruments (NI) as the virtual instrument software development platform, and write transformer error calibration software on the LabVIEW platform;

[0025] b. Select the host of the acquisition system: NI CompactDAQ-9184 from National Instruments (NI) is used as the host of the acquisition system, which integrates the signals collected by the signal acquisition card and sends them to the computer;

[0026] c. Select the signal acquisition card: use the NI9205 of National Instruments (NI) as the analog signal input acquisition card;

[0027] d. Select the virtual instrument software to run the computer: use the ordinary X86 architecture to run the Windows operating system computer as the software running platform of the calibration system;

[0028] e. Sampling and A / D conversion: Sampli...

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Abstract

The invention discloses a device and method for checking an electric transformer based on a virtual instrument. The device comprises a virtual instrument platform (1) composed of a computer. The virtual instrument platform is in wired or wireless connection with a signal acquisition host (2). A standard signal acquisition card (3) and an acquisition card (4) for signals to be measured are inserted into the signal acquisition host, the input end of the standard signal acquisition card is connected with output signals of a precision transformer, and the input end of the acquisition card for signals to be measured is connected with output signals of the transformer to be measured. According to the device and method for checking the electric transformer based on the virtual instrument, checking of the electric transformer is completed through the combination of the virtual instrument developed in a computer and a universal analog signal acquisition device, and the effect is as good as that of a traditional instrument. Furthermore, the functions of high-precision data computation, display, storage and the like can be achieved by utilizing vast software resources and hardware resources of the computer based on the virtual instrument technology. Due to the adoption of the virtual instrument, a hardware circuit is simpler in logic, and it is only required that modules are simply connected with each other.

Description

technical field [0001] The invention relates to a device and method for calibrating power transformers based on virtual instruments, and belongs to the technical field of calibrating electric power measurement components by using virtual instruments. Background technique [0002] A power transformer is a device that converts voltage or current proportionally. Its function is mainly to convert high voltage or high current into standard low voltage or standard low current in proportion to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At the same time, the transformer can also be used to isolate the high-voltage system to ensure the safety of people and equipment. [0003] The conversion ratio and phase difference accuracy of power transformers directly affect the accuracy of power metering. The accuracy and stability of power transformers are important guarantees for power system metering, prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
Inventor 何梦林史泽东李泽滔徐明辉霍俊海
Owner 广西天天飞航空科技有限公司
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