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Method for filtering network messages of process level of intelligent substation

A smart substation and network message technology, which is applied in the field of network message filtering at the process layer of the smart substation, can solve problems such as unable to limit MAC address traffic, achieve the effect of solving retransmission problems, purifying the network environment, and solving network storms

Inactive Publication Date: 2015-06-17
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for filtering network messages in the process layer of an intelligent substation, so as to solve the problem that the current network storm suppression method cannot limit the flow of the specified MAC address

Method used

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  • Method for filtering network messages of process level of intelligent substation
  • Method for filtering network messages of process level of intelligent substation

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Embodiment Construction

[0014] Below according to embodiment and in conjunction with accompanying drawing, the present invention will be further described:

[0015] Switches, protection, measurement and control, merging units, and intelligent terminals in the process layer of smart substations all need to provide two or more network interfaces to interconnect with other supporting devices. When each port is independent of each other (that is, each network port There is no internal connection between them, such as different network ports of the device) can be used figure 2 For management, when each port is associated with each other (such as each network port of a switch) can be used figure 1 to manage.

[0016] First of all, the following figure 2 To describe, when we know the application configuration of the device (switch, protection, measurement and control, merging unit, intelligent terminal, etc.) in the smart substation, we will also know the MAC address and traffic of each network port of...

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Abstract

Provided is a method for filtering network messages of a process level of an intelligent substation. A network of the process level of the intelligent substation is connected with various devices which comprise a merging unit, an intelligent terminal, a switchboard, a protection device and a measuring and control device, wherein the devices are used for sending and receiving SV messages and GOOSE messages, message filtering modules are additionally arranged between network interfaces and physical layers of the devices, the received messages are filtered additionally in a message filtering mode, traffic limitation is performed on the messages with MAC addresses assigned by the devices, key fields of the messages with the MAC addresses assigned by the devices are recognized, repeated messages are filtered, the messages without the MAC addresses assigned by the devices are discarded or forwarded, and broadcasting messages are discarded or forwarded. According to the method, the accurate management of the GOOSE messages and the SV messages can be achieved through the merging unit, the intelligent terminal, the switchboard, the protection device and the measuring and control device in the intelligent substation.

Description

technical field [0001] This invention relates to the communication of various devices such as merging units, intelligent terminals, switches, protection devices, and measurement and control devices of digital substations. Specifically, the devices send and receive SV (sampling values), GOOSE messages (general object-oriented substation events are IEC In the 61850 standard, it is used to meet the filtering method of substation automation system fast message) and the device using the method. Background technique [0002] The process layer network of the smart substation is composed of L2 Ethernet switches (L2 switches: Layer 2 switches, which only process messages according to MAC (Media Access Control, Media Access Control) addresses, etc., without IP and other Layer 3 switch functions and routing functions) , used to connect protection devices, measurement and control devices, intelligent terminals, merging units, etc., to realize the network transmission of GOOSE (Generic O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00H04L12/801
CPCY02E60/00Y04S10/16
Inventor 李力吕航杨贵何学东
Owner NR ELECTRIC CO LTD
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