A flexible direct current transmission converter valve control protection system and valve control blocking method

A technology of flexible direct current transmission and valve control system, which is applied in the direction of information technology support system, electrical components, circuit devices, etc., can solve the problems of uncontrolled sub-modules and uncontrollable instructions sent to sub-modules, etc., and achieves easy realization Effect

Active Publication Date: 2018-07-06
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a flexible direct current transmission converter valve control and protection system and a valve-controlled locking method to solve the problem that the sub-module is not under control due to the failure of the valve control device to issue control instructions to the sub-module

Method used

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  • A flexible direct current transmission converter valve control protection system and valve control blocking method
  • A flexible direct current transmission converter valve control protection system and valve control blocking method
  • A flexible direct current transmission converter valve control protection system and valve control blocking method

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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Embodiment of a flexible direct current transmission converter valve control and protection system of the present invention

[0022] The flexible direct current transmission converter valve control and protection system in this embodiment includes a pole control system and a valve control system, and the valve control system is connected to the pole control system through its topmost pole control interface unit to receive control signals from the pole control system , the valve control system controls and connects the converter valve sub-module through the sub-module interface unit at the bottom layer, and the pole control interface unit at the top layer of the valve control system is connected with the sub-module interface unit at the bottom layer of the valve control system through an independent communication channel. When the cont...

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Abstract

The invention relates to a control and protection system of a flexible direct current transmission converter valve and a valve control locking method, belonging to the technical field of flexible direct current transmission of electric power systems. The present invention connects the uppermost pole control interface unit of the valve control system with the lowermost submodule interface unit of the valve control system through an independent communication channel. The independent communication channel between the module interface units sends the emergency blocking signal to the sub-modules to realize the blocking of the converter valve. The present invention connects the extreme control system with the sub-modules in the converter valve through an independent communication channel. When the valve control system fails and the converter valve needs to be locked, the extreme control system directly sends the emergency locking command to the The sub-module realizes the locking of the sub-module. The present invention can still protect the converter valve sub-module from being damaged and replaced when the valve control system fails, and is simple and easy to realize.

Description

technical field [0001] The invention relates to a control and protection system of a flexible direct current transmission converter valve and a valve control locking method, belonging to the technical field of flexible direct current transmission of electric power systems. Background technique [0002] The core of flexible DC transmission is the voltage source converter composed of fully controlled power electronic devices IGBT, which is called a new type of DC transmission technology, which can independently adjust reactive power while transmitting electric energy, and realize flexible power flow reversal. Energy grid connection, isolated island power transmission, power trading in large cities and other fields have broad application prospects. [0003] The core equipment of the flexible HVDC converter station mainly includes converter valves, valve control systems, pole control systems, etc., such as figure 1 shown. The converter valve is a primary electrical device that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00H02J3/36
CPCY02E60/60Y04S40/124Y02E60/00
Inventor 胡四全吉攀攀董朝阳俎立峰冯敏李坤马俊杰
Owner XUJI GRP
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