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Data synchronization method of remote control channel

A data synchronization and telecontrol channel technology, applied in electrical components, transmission systems, etc., can solve the problems of missed transmission and repeated information transmission.

Inactive Publication Date: 2012-10-10
XJ ELECTRIC +2
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Problems solved by technology

[0003] The purpose of the present invention is to provide a telecontrol channel data synchronization method to solve the problem of repeated transmission and missing information in the current substation when switching between two channels

Method used

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  • Data synchronization method of remote control channel
  • Data synchronization method of remote control channel
  • Data synchronization method of remote control channel

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Embodiment Construction

[0031] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] The flow of the telecontrol channel data synchronization method is as follows: figure 1 As shown, the specific steps are as follows:

[0033] First, the dual channel in the power system substation is divided into a synchronous channel and a synchronized channel. The synchronous channel refers to the channel that sends synchronous data, and the synchronous channel refers to the channel that receives synchronous data. The deployment of the synchronous channel and the synchronized channel is as follows: figure 2 As shown, it can be divided into single-machine and dual-machine mode with one master and one backup, and single-machine and dual-machine mode with one master and multiple backups. If the single and dual-machine mode of one master and one backup is adopted, channel A is used as the synchronization channel to perform data sync...

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Abstract

The invention relates to a data synchronization method of a remote control channel. The method comprises the following steps: establishing a buffer area in the channel; simultaneously sending data to a synchronizing channel and a synchronized channel; using the synchronizing channel to send a received receipt to a scheduler to wait for an acknowledgement frame of scheduling; enabling the synchronized channel to perform dividing and checking on information to be sent at the end of the synchronized channel by adopting a fuzzy calculation method according to a time window; and deleting the information sent by the synchronizing channel. According to the method disclosed by the invention, effective and accurate dividing and checking can be performed on the information to be sent, so that the double channels can prevent missing sending and resending of the information after switching of the channels.

Description

technical field [0001] The invention relates to a data synchronization method for a telecontrol channel, which belongs to the field of telecontrol communication in electric power systems. Background technique [0002] The main problem of telecontrol communication equipment in the power system when switching between two machines is that the analog quantity, switching value, and action information of the substation equipment operation monitoring are transmitted to the dispatching master station. The main channel, the analog quantity, state quantity, and action information sent to the dispatching master station generally have information retransmission and missing phenomena. The omission of the state quantity information will lead to the inconsistency between the status monitored by the dispatching master station and the actual equipment state. If the retransmission will cause the state quantity information to change, it may cause the on-duty personnel to make wrong judgments a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 慕宗君方伟戚振伟马国强杨恢宏李江林牛津文张巧霞李贞赵生传陈志勇宋海峰吴石书
Owner XJ ELECTRIC
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