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A kind of mmc power module control and protection closed-loop test method and system

A power module, control and protection technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of limited test items, large area occupied by dynamic model tests, time-consuming and labor-intensive problems, etc.

Active Publication Date: 2020-11-20
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dynamic model test not only occupies a large area, but also requires a test system composed of a large number of power module units, such as modular multilevel converters, transformers, circuit breakers, and spacers. Building a test system is not only costly, but also Moreover, it is time-consuming and labor-intensive; in addition, if the operation is not careful during the test, it will cause damage to the equipment once, and the test items are also limited.

Method used

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  • A kind of mmc power module control and protection closed-loop test method and system
  • A kind of mmc power module control and protection closed-loop test method and system
  • A kind of mmc power module control and protection closed-loop test method and system

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Experimental program
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Effect test

Embodiment 1

[0043] see figure 2 , figure 2 It is a structural block diagram of a MMC power module control and protection closed-loop test system provided by Embodiment 1 of the present invention; it includes: RTDS real-time emulator (10), MMC real-time emulator (20), M power module controllers (30), Pulse distribution screen (40), valve control device (50) and upper control protection device (60);

[0044] The pulse distribution screen (40) is connected to M power module controllers (30);

[0045] The MMC real-time simulation device (20) comprises a GTFPGA board, and the GTFPGA board is used to set up a simulation model of the MMC; wherein, the simulation model is a real-time simulation model comprising M class a power modules and N class b power modules simulation model;

[0046] Described RTDS real-time emulator (10) comprises PB5 board, GTAO board and GTDI board; Described PB5 board is connected with described GTAO board and described GTDI board respectively, is used to realize an...

Embodiment 2

[0059] see image 3 , image 3 It is a flow chart of a MMC power module control and protection closed-loop test method provided by Embodiment 1 of the present invention; including:

[0060] S11, set up the simulation model of MMC on the GTFPGA board card of MMC real-time simulation device (20); Wherein, described simulation model is to comprise the real-time simulation model of M a class power modules and N b class power modules;

[0061] S12. The M class a power modules convert the capacitor voltages of the M class a power modules from optical signals into electrical signals through the PB5 board and the GTAO board, and transmit them to the M corresponding to the class a power modules A power module controller (30), so that the power module controller (30) converts the capacitor voltage into an optical signal and transmits it to the pulse distribution screen (40);

[0062] S13. Transmit the module states of the M class-a power modules to the power module controller (30) throu...

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Abstract

The invention discloses a modular multilevel converter (MMC) power module control protection closed-loop testing method. The MMC power module control protection closed-loop testing method comprises the steps that a simulation model of an MMC is established on a GTFPGA board card of an MMC real-time simulation device, wherein the simulation model comprises M a-class power modules and N b-class power modules; the a-class power modules transmit the capacitance voltage of the a-class power modules to M corresponding power module controllers through a PB5 board card and a GTAO board card, and thusthe capacitance voltage is transmitted to a pulse distribution screen through the power module controllers; the module state is transmitted to the power module controllers through the GTFPGA board card, and thus trigger communication signals of IGBTs of the power modules are transmitted to the a-class power modules through the power module controllers; trigger control signals of the a-class powermodules are transmitted to the power module controllers through the pulse distribution screen, and thus trigger signals output by the power module controllers are transmitted to corresponding controlbypass switches and bypass thyristors through a GTDI board card; the N b-class power modules conduct optical signal interaction with a valve control device through the Aurora communication protocol; and the valve control device is connected with an upper-layer control protection device to realize MMC power module control protection closed-loop testing.

Description

technical field [0001] The invention relates to the technical field of modular multi-level flexible direct current transmission, in particular to a method and system for closed-loop testing of MMC power module control and protection. Background technique [0002] In recent years, with the development of power electronic devices and the application of renewable energy generation technologies such as wind power and solar energy, flexible direct current transmission technology has been rapidly developed and applied at home and abroad. Compared with the traditional high-voltage direct current transmission technology, flexible direct current transmission is a new type of direct current transmission with more flexible control and less harmonics. The system has been widely used in the fields of new energy grid connection, island power supply and asynchronous networking. Among them, especially the flexible DC transmission system based on Modular Multilevel Converter (MMC, ModularMu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 林雪华郭琦郭海平李书勇饶宏陈钦磊罗炜
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD