Online distribution method of sub-module controller addresses in multi-level converter

A multi-level converter and module controller technology, applied in electrical components, transmission systems, etc., can solve the problems of unavoidable risks of manual operation errors, large workload, hidden dangers of personal safety accidents, etc., to eliminate human errors the risk and the effect of saving labor input

Active Publication Date: 2020-12-18
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will lead to a huge workload and cannot avoid the risk of manual errors
In some application scenarios, the sub-module is installed on the valve tower, which requires high-intensity work, which may lead to hidden dangers of personal safety accidents
[0007] To sum up, in the current multi-level converter system, there is a lack of a method that can assign addresses to sub-modules in the communication network online, which can take into account both efficiency and safety, and is not limited by the number of sub-modules

Method used

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  • Online distribution method of sub-module controller addresses in multi-level converter
  • Online distribution method of sub-module controller addresses in multi-level converter
  • Online distribution method of sub-module controller addresses in multi-level converter

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Embodiment Construction

[0023]The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

[0024]figure 1 It shows a schematic flow chart of a method for online allocation of sub-module controller addresses in a multi-level converter in an embodiment of the present application.figure 2 Shows applicationfigure 1 The schematic diagram of the communication network topology connection of the converter system of the shown method.

[0025]Optionally, applyfigure 1 The communication network topology of the inverter system of the method shown is preset. Optionally, the equ...

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Abstract

The invention relates to an online distribution method of sub-module controller addresses in a multilevel converter, which is applied to a modular multilevel converter control system communication network, equipment in the communication network comprises a valve base controller (VBC) and N sub-module controllers (SMC) which are in communication connection with each other, and N is a positive integer. The valve base controller is in communication connection with at least one of the N sub-module controllers, and the method is characterized by comprising the steps that the valve base controller sends a calibration frame to the communication network, the calibration frame comprises address information and path information of a target sub-module controller, and the target sub-module controlleris in communication connection with the valve base controller. The calibration frame is enabled to reach a target sub-module controller along a transmission path specified according to the path information; the target sub-module controller receives the calibration frame and stores the address information; and the target sub-module controller sends an acknowledgement frame to the valve base controller to indicate that the target sub-module controller is online.

Description

Technical field[0001]This application relates to the communication technology of a multi-level converter control system, in particular to an online allocation method of sub-module controller addresses in a multi-level converter, and a modular multi-level converter control system communication network .Background technique[0002]At present, compared with high-voltage AC power transmission and traditional high-voltage DC power transmission, the high-voltage flexible DC power transmission system has its unique advantages and is more suitable for long-distance power transmission, wind power grid connection, subsea power transmission and other applications. The modular multilevel converter system is the main solution for the current HV flexible DC transmission system. The modular multi-level converter system includes Valve Based Controller (VBC) and Sub-module Controller (SMC). Among them, VBC is the main control device, and the sub-module controller is the actuator. The higher the voltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L61/5038Y02E60/60
Inventor 李彦蔡菠许宗光李汉杰李响汪涛
Owner NR ELECTRIC CO LTD
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