Redundancy communication method for direct current control protection system

A technology of DC control protection and redundant communication, which is applied in the field of redundant communication, can solve the problems of limited redundant channels, achieve simplified design, improve the reliability of communication redundancy, and have good application prospects

Inactive Publication Date: 2017-01-04
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of limited external redundant channels of existing DC control and protection systems

Method used

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  • Redundancy communication method for direct current control protection system

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] The redundant communication method for the DC control and protection system of the present invention includes the following steps,

[0017] Step (A), each protection device in the DC control and protection system is equipped with a redundant dual communication processing unit, and the redundant dual communication processing units exchange data through the internal high-speed data bus, and each redundant dual communication processing unit is in the hardware It is independent on each other and serves as a backup for each other, and each redundant dual communication processing unit is connected through a high-speed data bus;

[0018] Step (B), each redundant dual-communication processing unit is physically connected to the external redundant dual-channel physical link, such as figure 1 As shown, it is specifically shown that the first communication processing unit...

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Abstract

The invention discloses a redundancy communication method for direct current control protection system. The redundancy communication method for the direct current control protection system comprises the steps: A) setting a redundancy double-communication processing unit for each protective device in the direct current control protection system, exchanging the data between the redundancy double-communication processing units through an inner high speed data bus; B) respectively connecting with external redundancy double-channel physical link physically by each redundancy double-communication processing unit; C) receiving the data on the corresponding external redundancy double-channel by the communication processing unit in each redundancy double-communication processing unit, and forwarding the data to the other communication processing unit on the positioned redundancy double-communication processing unit by the inner high speed data bus; D) independently processing the data of external redundancy double-channel by each redundancy double-communication processing unit, and realizing the mutual redundant backup. The redundancy communication method for the direct current control protection system is capable of improving the reliability of the communication redundancy, and simplifying the design of the communication system, is used for a plurality of communication application occasions between the protective devices, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of direct current transmission, in particular to a redundant communication method for a direct current control and protection system. Background technique [0002] HVDC transmission system has the advantages of large transmission capacity, long distance and low loss, and is an important way to realize the overall optimal allocation of energy. The DC control and protection system is the core component of the UHV DC transmission project. It mainly includes pole control hosts, pole protection hosts, valve control hosts, AC and DC filter protection hosts, etc. Among them, the pole control host is responsible for power, voltage, and current control. ; Pole protection host is mainly responsible for commutation failure protection, differential overcurrent protection, valve short circuit protection, etc. When the DC transmission project is in normal operation, the host devices in the DC control and protection syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26H02H1/00H04L1/22
CPCH02H1/0061H02H7/261H02H7/268H04L1/22
Inventor 袁涛周强李响李彦文继锋周谷庆仲浩
Owner NR ELECTRIC CO LTD
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