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High voltage DC control protection system board card testing device

A control and protection, high-voltage DC technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve problems such as low test work efficiency

Inactive Publication Date: 2018-05-18
国网河南省电力公司超高压公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model realizes functions such as friendly detection operation control, detection status display, detection data analysis, and detection report output, and realizes the function detection of the hardware board of the control and protection system of the DC system. However, this utility model can only perform one test at a time. Board testing still has the problem of low test efficiency

Method used

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  • High voltage DC control protection system board card testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the high-voltage DC control and protection system board test device includes a man-machine interface 1, a control unit 2, an analog generator 3, a switch generator 4, a communication module 5 and a physical interface module 6.

[0034] The man-machine interface 1 is a medium and a dialogue interface for transmitting and exchanging information between man and computer, and is used for displaying results.

[0035] The control unit 2 is used to control the DSP high-speed floating-point calculation of the high-voltage direct current control and protection system, and realize rapid converter valve trigger control and protection.

[0036] The analog generator 3 is used for 0-20mA DC current output and 0-110V DC voltage output.

[0037] The switching value generator 4 is used for outputting 8 switching values, and the normally open or normally closed characteristics of the 8 switching values ​​can be flexibly configured.

[0038] The communication ...

Embodiment 2

[0047] The difference from Embodiment 1 is that the board to be tested 7 connected to the physical interface module 6 is an analog acquisition board, and the analog acquisition board is a PS841 analog acquisition board. When testing, the control unit controls the analog generator to send analog data to the board to be tested according to the type of the board to be tested, and at the same time receives the analog information collected by the board to be tested through the TDM bus, and compares the two The difference judges the accuracy of the board and displays the result on the man-machine interface.

[0048] In this embodiment, the analog acquisition board is a PS841 analog acquisition board. Obviously, the analog acquisition board to be tested can also be other types of analog acquisition boards, such as the PS845 analog acquisition board or The PS862 analog acquisition board can also be measured with this test device.

Embodiment 3

[0050] It differs from Embodiment 1 in that: the board to be tested 7 connected to the physical interface module 6 is a digital input board. When testing, the control unit controls the switching value generator to send alternately changing switching value information one by one to the physical interface module, and the communication module sends the switching value collection information of the switching value input board card to be tested to the control unit through the CAN bus. The control unit judges whether the digital input board to be tested is normal by comparing the digital information sent by the digital generator with the digital information obtained from the CAN bus, and displays the result on the man-machine interface.

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Abstract

The invention discloses a high voltage DC control protection system board card testing device comprising a man-machine interface, a control unit, an analog quantity generator, a switching value generator, a communication module and a physics interface module; the control unit and the physics interface module are kept in a CAN bus, TDM bus and Ethernet connection through the communication module, wherein the CAN bus transmits the switching value information, the TDM bus transmits the analog quantity information, and the Ethernet transmits the board card information; the control unit obtains theboard card information accessing the physics interface module through the communication module, starts a corresponding testing flow according to the board card information, and uses the analog quantity generator and the switching value generator to send a test signal to the physics interface module according to the testing flow; the control unit uses the communication module to obtain the test result of the to-be-tested board card, and displays the test result on the man-machine interface. The testing device can test a plurality of board cards of the same or different types in one time, and the detection steps are simple and direct, thus effectively finishing the test works of the high voltage DC control protection system board card.

Description

technical field [0001] The invention belongs to the technical field of power grid hardware testing, and in particular relates to a high-voltage direct current control and protection system board card testing device. Background technique [0002] DC transmission technology is a power transmission technology that realizes AC / DC conversion by means of high-power semi-controlled power electronic devices (such as thyristors) or fully-controlled power electronic devices (such as IGBT, IGCT, etc.), and is a power transmission that requires real-time control. Way. The DC transmission control and protection system responsible for its control and protection functions has the following characteristics: (1) a complex all-digital large system, relying on high-speed field bus and Ethernet to realize communication; (2) adopting a decentralized and distributed structure, using plug-in board The card is the smallest replaceable unit; (3) There are specific applications in the plug-in boards...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28G05B23/02
CPCG01R31/2806G05B23/0213
Inventor 连进灿李应文刘岳申磊陈晓张华许立新罗朝华姜海波闫玉峰王紫鑫王宇婕乔王瑜邵奇
Owner 国网河南省电力公司超高压公司
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