A method for improving the redundancy of a flexible DC valve control and protection system

A protection system, flexible DC technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problem of insufficient redundancy of the control system architecture

Active Publication Date: 2021-08-20
GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The trigger pulse distribution board is the only single component (no redundancy) of the entire power module (MMC) control system, therefore, the redundancy of the control system architecture is insufficient

Method used

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  • A method for improving the redundancy of a flexible DC valve control and protection system
  • A method for improving the redundancy of a flexible DC valve control and protection system
  • A method for improving the redundancy of a flexible DC valve control and protection system

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Embodiment Construction

[0034] The content of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] It should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "seco...

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Abstract

The invention discloses a method for improving the redundancy of a flexible DC valve control and protection system, and relates to the technical field of flexible DC power transmission. The method arranges the order in which the trigger pulse distribution board is connected to the power modules, that is, the power modules are in the order of odd numbers and even numbers. Connect with trigger pulse distribution boards in turn, for example, trigger pulse distribution board 1 connects to the power module, trigger pulse distribution board 2 connects to the power module, two boards form a pair, and so on. When a certain channel, several channels or the entire board on the trigger pulse distribution board 1 fails, the valve control system will send the trigger information of the faulty channel to the adjacent trigger pulse distribution board 2, and then through the trigger pulse distribution board 2 Send to the power module connected to the trigger pulse distribution board 2. After being judged by the central control board of the power module, the trigger information is sent to the power module corresponding to the faulty channel through the redundant channel between the modules, and the response status information is sent along the reverse Return to the path valve control system A / B. The invention guarantees the safe and stable operation of the valve control system.

Description

technical field [0001] The invention relates to the technical field of flexible direct current transmission, in particular to a method for improving the redundancy of a flexible direct current valve control and protection system. Background technique [0002] At the beginning of the development of the power system, in order to reduce costs, the control and protection devices all adopt a single configuration principle. When a certain device is damaged, the entire power supply is often paralyzed. Therefore, when the system fails, in order to reduce the risk of large-scale blackout, reduce the system failure time, and enhance the stability of the power system, the concept of system redundancy configuration is proposed. So far, the way of redundant configuration has been widely used in all levels of the power system, effectively improving the security and stability of the power system. [0003] Compared with conventional DC transmission technology, flexible DC transmission tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32
CPCH02M1/32H02M1/0006H02M1/325
Inventor 焦石朱博杨学广严治勇谷裕周登波严海健陈海永赖桂森何海欢张健成裴昌文
Owner GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
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