Interface device and communication method between converter valve and valve base control equipment

A technology of valve-based control equipment and interface devices, applied in the direction of output power conversion devices, AC power input conversion to DC power output, electrical components, etc., can solve the problems of high cost of equipment installation, operation and maintenance, and facilitate later maintenance , reduce the amount of use, reduce the effect of the possibility of breakage

Active Publication Date: 2022-07-19
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of high equipment installation, operation and maintenance costs caused by the use of optical fiber communication between the valve base control system and the converter valve in the prior art, thereby providing a converter valve and valve Interface device and communication method of base control equipment

Method used

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  • Interface device and communication method between converter valve and valve base control equipment
  • Interface device and communication method between converter valve and valve base control equipment
  • Interface device and communication method between converter valve and valve base control equipment

Examples

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Embodiment 1

[0036] The embodiment of the present invention provides an interface device between a converter valve and a valve base control device, which is applied to occasions that need to control multiple devices. The valve base control device includes a plurality of bridge arm control units, a centralized control unit, and a converter valve. Including multiple bridge arms, each bridge arm includes multiple sub-modules, one bridge arm control unit can control the running state of the same bridge arm sub-module through one interface device, or one bridge arm control unit can control the same bridge through multiple interface devices The operating status of the arm sub-module and the number of interface devices are determined by the interface number of the interface device and the number of the same bridge arm sub-module. In one embodiment, as figure 1 As shown, the converter valve is composed of 6 bridge arms, each bridge arm is composed of k sub-modules, the valve base control device is...

Embodiment 2

[0072] An embodiment of the present invention provides a communication method between a converter valve and a valve base control device. Based on the interface device of Embodiment 1, when a bridge arm control unit controls the operating state of a submodule of the same bridge arm through at least one interface device, like Figure 7 As shown, the communication method includes:

[0073] Step S11: The bridge arm control unit combines the acquired sub-module control information to obtain at least one sub-module control information data packet, and the bridge arm control unit sends the corresponding sub-module control information data packet to the corresponding first communication module.

[0074] Step S12: The first communication module sends the sub-module control information data packet to the control module, and after the control module parses the sub-module control information data packet, the sub-module control information is sent to the corresponding sub-module through th...

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Abstract

The invention discloses an interface device and a communication method between a converter valve and a valve base control device. The interface device comprises: a first communication module receives a sub-module control information data packet; a second communication module receives operation status information sent by a corresponding sub-module ; The control module parses the sub-module control information data packet to obtain the sub-module control information and sends it to the corresponding sub-module; combines the operating status information sent by the corresponding sub-module, and sends the sub-module operating status information data packet to the corresponding bridge The arm control unit; the power supply interface module supplies power to the first communication module, the second communication module and the control module. The bridge arm control unit of the present invention interacts with the data information of each sub-module sequentially through the first communication module, the control module, and the second communication module, eliminating a large number of optical fiber wiring from the secondary control room to the valve hall, which is convenient for later stages. Overhaul and maintenance can effectively improve the reliability of the communication between the valve base control equipment and the valve tower sub-module.

Description

technical field [0001] The invention relates to the technical field of flexible direct current power transmission, in particular to an interface device and a communication method between a converter valve and a valve base control device. Background technique [0002] In the HVDC flexible transmission system, the Valve-Based Controller (VBC), as an intermediate link connecting the pole control protection equipment and the converter valve, is mainly responsible for realizing the complete control of all sub-modules, the entire bridge arm and even the entire system of the converter valve. Operational control and security protection. Compared with conventional DC in which thyristors are directly connected in series, the converter valve of flexible DC transmission consists of multiple sub-modules composed of fully-controlled IGBTs. Each sub-module needs to be independently controlled, and when the voltage level of the transmission system is higher, the required The number of subm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/00H02M1/092
CPCH02M7/00H02M1/092
Inventor 关兆亮魏晓光路建良谢敏华李强
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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