A data acquisition and virtual calibration system and method for an optical fiber current transformer

A data acquisition system, optical fiber current technology, applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve the problems of operational complexity and difficulty, characteristic analysis is difficult to complete, acquisition card can not achieve synchronous trigger sampling, etc., to improve The effect of testing techniques

Active Publication Date: 2018-04-17
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

However, none of the current acquisition cards can achieve strict synchronous trigger sampling, and there is a problem of sampling delay
If the sampling delay error of the acquisition card is not corrected, it will cause errors in the calibration results
[0004] Moreover, for the characteristic analysis projects of different electronic current transformers, it is necessary to build different test platforms for realization, but limited by the complexity and difficulty of operation, some characteristic analysis is difficult to complete

Method used

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  • A data acquisition and virtual calibration system and method for an optical fiber current transformer

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] See figure 1 This figure is a schematic structural diagram of a data acquisition system for an optical fiber current sensor provided by an embodiment of the present invention. As shown in the figure, the data acquisition system includes a calibrated optical fiber current transformer 2, a data acquisition device...

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Abstract

The invention provides a data acquisition system for a fiber current transformer based on virtual apparatus technology and a virtual verification system applied in the data acquisition system. According to the virtual verification system, a virtual apparatus, namely a simulation mutual inductor is used to complete the simulation process of current output signal acquisition, signal conditioning and signal detection. After the virtual process, related characteristics of the fiber current transformer are analyzed to obtain a transient characteristic and a stable state characteristic. Data acquisition, signal detection processing and characteristics analysis can be completely conveniently and reliably in high efficiency; test technology for an electronic current transformer is raised; and technology guarantee for safe and stable operation of the electronic current transformer is provided. Further, the invention also provides a virtual verification method that is used to realize the functions.

Description

Technical field [0001] The invention relates to the technical field of electronic current transformers, in particular to a data acquisition and verification system and a verification method for optical fiber current transformers. Background technique [0002] Under the substation architecture system, electronic current transformers belong to the process level equipment, and they play the role of interconnection and information interaction between the primary equipment and the secondary equipment, especially the interaction with the secondary metering, protection and control equipment. The communication interface is an important node for information exchange in the entire substation. Its working principle is to convert a larger primary current into a smaller secondary current. Among them, the light-type current sensor is a kind of electronic fiber-optic current sensor. [0003] At present, the calibration of electronic current transformers adopts the differential measurement metho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 林聪曹敏王立辉李波林中爱刘清蝉王洪林朱全聪杨明钟尧
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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