System, device and method for realizing synchronization of sampling value serial numbers

A sampling value and serial number technology, applied in the field of information processing, can solve the problems of different rated delays, first and last, uneven, etc.

Inactive Publication Date: 2014-12-10
STATE GRID CORP OF CHINA
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Problems solved by technology

[0012] where T 额 It can be regarded as a fixed value, but the nominal rated delay of each manufacturer is different. The technical specification of the State Grid requires that the rated delay is not greater than 2ms; the transmission delay of the Te network is a jitter value, and the technical specification of the State Grid requires the transmission of various frames. The inherent delay of the switch should be less than 10us for long data, and the data transmission route between any two intelligent electronic devices should not exceed 4 switches. However, due to changes in the working environment and network load in engineering applications, the jitter of network transmission delay The scope is likely to exceed the above requirements
[0013] It is precisely because of the influence of the above two factors that the time when the sampling value messages sent by each merging unit arrive at the protection device is uneven and there are first and last

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  • System, device and method for realizing synchronization of sampling value serial numbers
  • System, device and method for realizing synchronization of sampling value serial numbers
  • System, device and method for realizing synchronization of sampling value serial numbers

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Embodiment Construction

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0063] The relative arrangement of the components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

[0064] Meanwhile, it should be understood tha...

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Abstract

The invention discloses a system, a device and a method for realizing synchronization of sampling value serial numbers. The method for realizing synchronization of the sampling value serial numbers includes: enabling a protection device to calculate message transmission time Td required by a merging unit for sending an SV (sampling value) message; determining an actual sampling instant associated with the SV message sent by the merging unit according to rated delay of the merging unit, a data arrival protection instant and the transmission time Td, so that sampling synchronization can be realized effectively.

Description

technical field [0001] The present invention relates to the field of information processing, in particular to a method, device and system for realizing the synchronization of sampling value serial numbers. Background technique [0002] When the protection adopts the direct sampling method, since the routing delay of data transmission is determined, the protection can calculate the data sampling time of the merging unit according to the rated delay of the merging unit and the time when the data arrives at the protection, so the direct sampling method does not Relying on an external unified clock source, the overall technical performance and security reliability are generally high. [0003] However, for cross-bay equipment (such as bus differential protection), in order to achieve "direct sampling and direct tripping", a large number of sampling values ​​and GOOSE interfaces need to be provided. , the failure probability is high, and the overall reliability of the protection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00
Inventor 辛耀中常乃超陶洪铸李力陈新之易永辉任雁铭
Owner STATE GRID CORP OF CHINA
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