Method for transmitting four kinds of messages of intelligent substation in one physical network based on annular networking

Abstract

The invention discloses a method for transmitting four kinds of messages of an intelligent substation in one physical network based on annular networking. The method comprises the steps of cascading switches which are respectively connected with at least one interval combination unit, intelligent terminal, protection device and measurement and control device; and cascading the switches at two ends with one switch which is connected with station control layer devices, thereby forming an annular networking topological structure, wherein four kinds of messages: GOOSE, SV, MMS and IEEE1588 can be transmitted in an annular network, interval layer devices are connected with one switch to independently form a small network, and the network traffic on a main path of the annular network is reduced by increasing branch paths, thereby mitigating the load pressure of the switches. The method is applicable to an occasion for optimizing the network traffic under the condition that the existing network bandwidth is fixed.

Description

technical field [0001] The invention relates to the field of network communication of intelligent substations, and relates to a ring-type networking method based on "four networks in one" of intelligent substations. Background technique [0002] With the advancement of research on vertical bay integration technology, integrated protection technology, and integrated monitoring system technology, the research on information sharing of smart substations has also attracted great attention. The information sharing of the whole station no longer has the isolation of the station control layer network and the process layer network. In theory, information access from any device in a shared network to other devices can be realized, which greatly improves the flexibility and efficiency of communication services. , Standardization, in line with the target requirements of smart substations, it is bound to be the development trend of the secondary equipment networking of smart substations...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an intelligent substation "four-network-in-one" based on This method is scientific and reasonable, and has strong applicability. It can achieve smooth communication through small network shunting without changing the bandwidth of the switch, combined with the communication characteristics between devices, and under the premise that the large network remains unchanged.

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