System and method for smart power grid to transmit GOOSE messages across wide area network

Abstract

The invention discloses a system and method for a smart power grid to transmit GOOSE messages across the wide area network. The system for the smart power grid to transmit the GOOSE messages across the wide area network comprises a sending end and a receiving end. The sending end comprises an encapsulation storage bucket and a first sorting sending bucket, wherein the encapsulation storage bucket is used for receiving the GOOSE messages, carrying out generic routing encapsulation (GRE) on the GOOSE messages, generating an encapsulation sequence number displaying the encapsulation sequence of the GOOSE messages, writing the encapsulation sequence number into a GRE masthead, then carrying out IP encapsulation on the GOOSE messages after the GRE, and generating and storing the IP messages, and the first sorting sending bucket is used for ordering the IP messages in the encapsulation storage bucket according to the encapsulation sequence number and then sending the ordered IP messages to an IP network. The receiving end comprises a de-encapsulation storage bucket and a second sorting sending bucket, wherein the de-encapsulation storage bucket is used for receiving the IP messages from the IP network, carrying out IP de-encapsulation and GRE de-encapsulation on the IP messages to obtain the GOOSE messages, and storing the GOOSE messages obtained after the de-encapsulation, and the second sorting sending bucket is used for ordering the GOOSE messages in the de-encapsulation storage bucket according to the encapsulation sequence number and then sending the ordered GOOSE messages to one or multiple intelligent electronic devices in a transformer substation.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a GOOSE message transmission system and method for a smart grid across a wide area network. Background technique [0002] With the rapid development of computer network communication technology, the requirements for substation automation in the power system are getting higher and higher. Universal communication method to achieve, IEC61850 proposes a public communication standard, through a series of standardization of equipment, it forms a standardized output, and realizes the seamless connection of the system. [0003] Generic Object Oriented Substation Event (Generic Object Oriented Substation Event, GOOSE) is a mechanism used in the IEC 61850 standard to meet the fast message requirements of the substation automation system. The monitoring system of the substation adopts the IEC61850 communication standard, utilizes the fast Ethernet feature, and realizes the information exchang...

AI Technical Summary

Problems solved by technology

[0005] In actual substation applications, since GOOSE messages can only be transmitted in LAN or virtual local area network, the central control station can only be deployed in LAN or VLAN, which greatly restricts the location of the central control station

When the target substation is far away from the central control station, the central control station often cannot control the IEDs in the substation due to the distance

In addition, when it is necessary to control the IEDs in multiple substations in different LANs, it is necessary to deploy central control stations in the different LANs to control the IEDs in the substations respectively, resulting in the control of IEDs in different LANs. Multiple central control stations are required to control the IEDs in multiple substations, the layout is more complicated and the cost is higher

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