Digital data acquisition device

A data acquisition and data sampling technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of reducing the reliability of the whole station, failing to meet the requirements of T5 level, increasing costs, etc., to facilitate processing and maintenance, reduce clock errors, The effect of improving sampling accuracy

Active Publication Date: 2011-01-19
NARI TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from this that the current commonly used GPS synchronization method cannot meet the requirements of T5 level at all.
At the same time, additional wiring is required for GPS synchronization and time synchronization, which increases the cost and reduces the reliability of the whole station

Method used

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Embodiment Construction

[0029] This device mainly includes AC sampling board, FT3 serial port sampling board, Power board, CPU board, bus communication back board, liquid crystal display board. The AC board and the FT3 serial board are used for data sampling, the bus backplane is used to connect to other boards and realize the bus communication between the boards, the Power board provides power for the device, and the CPU board is responsible for data processing and organizing messages. At the same time, it receives IEEE1588 timing and sends GMRP message to the switch to dynamically establish VLAN. At the same time, 2 network ports are reserved on the CPU board, which are used to send device status and alarm information through GOOSE. The specific implementation process of the whole device is as follows:

[0030] After the device is powered on, the configuration file is first read. Configuration files are divided into device configuration files and 9-2 message configuration files. The device confi...

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PUM

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Abstract

The invention discloses a digital data acquisition device. The device comprises the following functional plugins: a power panel, an AC sampling panel, an FT3 panel, a CPU panel, a bus back panel, and a liquid crystal display panel, wherein the AC sampling panel is connected to an analogue voltage and current signal output by a traditional electromagnetic mutual inductor; the FT3 panel is connected to the digital signals acquired by an electronic voltage transformer and an electronic current mutual inductor; the CPU panel is used for processing sampled data, transmitting a sampled message and receiving an external IEEE1588 time tick message and a GMRP message, and transmitting equipment state alarm information through GOOSE at the same time; the bus back panel is connected to the plugins of the device and realizes bus communication between the panels; and the liquid crystal display panel is used for displaying the sampled data of the device, recording failure events and setting parameters. The device can realize whole-station sharing of the sampled data, can control the sampling synchronous error of the data to be lower than 1 microsecond at the same time, greatly improves the data sampling precision and improves the reliability and accuracy of protection over the whole station.

Description

technical field [0001] The invention relates to a digital data acquisition device, which belongs to the technical field of electric power automation. Background technique [0002] As the power system develops in the direction of large capacity, ultra-high voltage and ultra-high voltage, the primary and secondary equipment develops in the direction of miniaturization, intelligence and high reliability. With its small size, light weight, strong anti-electromagnetic interference ability, wide dynamic range, not easy to be saturated, simple insulation structure, and easy digital signal transmission, the electronic transformer complies with the development requirements of electric power engineering and has been widely used. application. The electronic transformer is connected to the merging unit through an optical fiber, and the merging unit sends the sampling value to the IED at the interval layer. The use of the merging unit can simplify the cable connection on the constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 樊陈倪益民沈健何昭辉谢黎周斌黄国方徐石明李惠宇仇新宏季学军于海波李娟
Owner NARI TECH CO LTD
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