Method of avoiding data message collision in communication network within transformer substation

A data message and communication network technology, applied in the field of power system, can solve problems such as data message collision, increase packet loss rate and delay, network congestion, etc., to avoid congestion, reduce packet loss rate and delay, and meet The effect of automation

Inactive Publication Date: 2017-01-18
STATE GRID CORP OF CHINA +3
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Problems solved by technology

There is a problem of collision of data packets in the communication network of the existing substation, and the collision will lead to network congestion, thereby increasing the packet loss rate and delay

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  • Method of avoiding data message collision in communication network within transformer substation

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0019] The IEC61850 substation internal communication network is a dedicated data communication network used to carry functional services such as protection, measurement and control, metering, PMU, and fault recording. According to different applications, the network information in the substation includes GOOSE, SV, MMS, and time synchronization information. kind.

[0020] Such as figure 1 As shown, the method for avoiding data message collision in the substation communication network of the present invention includes the following contents:

[0021] 1. For the data service sources of GOOSE, SV, MMS and IEEE1588 (namely IEC61588), distinguish the message data source. ...

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Abstract

The invention relates to a method of avoiding data message collision in a communication network within a transformer substation. The method is characterized by 1) aiming at data service sources of GOOSE, SV, MMS and IEEE1588, carrying out message data source distinguishing; 2) according to a message data source distinguishing result, carrying out data message type identification; 3) starting a data message priority mechanism and defining transformer substation services according to priorities of different data message types; 4) defining a data message multicast management protocol of the transformer substation; 5) defining a corresponding data message CSMA strategy for the different data message types; and 6) defining a corresponding data message conflict avoidance algorithm for the different data message types. In the invention, congestion of the communication network in the transformer substation can be avoided, a packet loss ratio and time delay of a communication service are reduced, communication network performance in the transformer substation is improved, and real-time performance, stability and reliability of work of the transformer substation are increased.

Description

technical field [0001] The invention relates to a method for avoiding collision of data messages in a communication network in a substation, and relates to the technical field of power systems. Background technique [0002] In order to meet the needs of intelligent substations, future substation equipment will gradually move towards functional integration and structural integration, the integration of primary and secondary equipment will be closer, and the boundaries will be more blurred. The realization of comprehensive analysis and automatic collaborative control is the key to the intelligentization of substations, and the digitalization of equipment information, function integration, compact structure and maintenance automation are the future development directions of substations. The IEC61850 standard is a complete communication standard for substation automation systems and the most important supporting technology for the construction of intelligent substations. It has ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/413H04L12/46H04L12/801H04L12/851
CPCH04L47/12H04L12/413H04L12/4641H04L47/24H04L47/2433
Inventor 苗新张亮宋璇坤杨才明金乃正朱玛李勇王玉东余杰沈祥
Owner STATE GRID CORP OF CHINA
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