Data acquisition system, virtual verification system and method for fiber current transformer

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

Active Publication Date: 2016-04-06
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

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  • Data acquisition system, virtual verification system and method for 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 in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025] see figure 1 , which 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 and an industrial com...

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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 collection and calibration system and calibration method for optical fiber current transformers. Background technique [0002] Under the substation architecture system, the electronic current transformer belongs to the process layer equipment, which plays the role of interconnection and information interaction between primary equipment and secondary equipment, especially its connection with secondary measurement, protection and control equipment. The communication interface is an important node for the information exchange of the whole substation. Its working principle is to convert a larger primary current into a smaller secondary current. Among them, the optical current sensor is a kind of electronic optical fiber current sensor. [0003] At present, the calibration of electronic current transformers adopts the difference measurement method, whi...

Claims

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Application Information

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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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