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Modularized three-phase instrument calibrating device for smart grid

A smart grid, three-phase instrument technology, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., can solve the problems of expensive implementation and maintenance, adverse effects of uncertainty in the calibration process of electric energy meters, etc., and achieve automatic tuning and automatic gain. Control, increase intelligence and adaptability, reduce the effect of usage

Active Publication Date: 2013-11-06
SHANGHAI INSTR RES INST
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Problems solved by technology

Not only does this in itself adversely affect the uncertainty of the entire energy meter calibration process, it is also expensive to implement and maintain

Method used

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  • Modularized three-phase instrument calibrating device for smart grid
  • Modularized three-phase instrument calibrating device for smart grid
  • Modularized three-phase instrument calibrating device for smart grid

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Embodiment Construction

[0033] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0034] see figure 1 , The modular three-phase instrument verification device for smart grid is composed of power supply, digital three-phase waveform generator, phase sampling and control, power amplification, signal preprocessing, data analysis, man-machine dialogue and other modules. The system uses a high-performance microcomputer and uses an embedded operating system to ensure that the instrument interface is friendly and easy to operate; large-scale FPGA modules are used to generate waveforms that can be precisely controlled, which is not only conducive to research, development, upgrades, but also facilitates debugging and maintenance. Realized voltage closed loop, current closed loop and phase angle closed loop, thus ensuring low drift and...

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Abstract

The invention provides a modularized three-phase instrument calibrating device for a smart grid. The modularized three-phase instrument calibrating device comprises an input interface and an output interface, the input interface is connected with a signal conditioning module, the signal conditioning module is connected with a data analysis and processing module, the data analysis and processing module is connected with a man-machine conversation module, the man-machine conversation module is respectively connected with a voltage and current waveform control module and a three-phase angle sampling module, the output interface is respectively connected with the voltage and current waveform control module and the three-phase angle sampling module, a three-phase waveform generation module is connected between the voltage and current waveform control module and the three-phase angle sampling module and connected with a power amplifier output transformer module, and the power amplifier output transformer module is connected with the output interface. The modules are connected by the aid of a certain communication pattern, and maintenance convenience and use diversity of a system can be improved.

Description

technical field [0001] The invention relates to the technical field of circuit equipment, in particular to a modularized three-phase instrument verification device for smart grids. Background technique [0002] Electrical instruments and meters are widely used in the electric power industry, and the technical performance and quality of products directly affect the use effect of electric power users. Therefore, in the actual use process, it is necessary to frequently verify and test the various electrical instruments and meters responsible for monitoring the operation of the power grid to ensure the reliability and accuracy of the power grid system operation. [0003] Through the novelty search of intellectual property rights, we did not find any relevant patents on effective three-phase standard power sources. The technical standards related to three-phase electrical verification equipment are mainly the national standard GB6592-86 "General Regulations on Errors of Electron...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 吴维华郭佳伟许雪军李凤英周超刘梦丽
Owner SHANGHAI INSTR RES INST
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