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Network message management method of intelligent substation process layer switch

A technology for intelligent substations and network messages, applied in data exchange networks, electrical components, digital transmission systems, etc., can solve problems such as inability to classify and manage network messages, eliminate network storms, solve the problem of occupying effective bandwidth, and solve problems that cannot be accurately inhibiting effect

Inactive Publication Date: 2015-09-16
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a network message management method for a process layer switch in an intelligent substation, so as to solve the problem that the process layer switch cannot classify and manage network messages according to network message keywords such as MAC address, APPID, message protocol type, etc. The problem

Method used

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  • Network message management method of intelligent substation process layer switch

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Experimental program
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Embodiment 1

[0025] see figure 2 , the network message management method of the smart substation process layer network switch, comprising the following steps:

[0026] An FPGA is added between the switch SWITCH and the PHY, the switch CPU sends a message management policy to the FPGA, and the FPGA realizes the network message management of the switch;

[0027] FPGA checks the validity of network messages according to network message keywords, and processes illegal messages according to message management policies;

[0028] The FPGA performs traffic statistics on different network packets according to the keywords of the network packets, and processes traffic overrun packets according to the packet management strategy;

[0029] The FPGA checks the correctness of legal network packets, accurately locates error packets based on network packet keywords, and processes abnormal packets according to packet management policies.

[0030] As a preferred solution, the FPGA checks the validity of t...

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Abstract

The invention discloses a network message management method of an intelligent substation process layer switch. The method comprises the following steps: adding FPGA between the switch and PHY, a switch CPU sending a message management strategy to the FPGA, and realizing the network message management of the switch through the FPGA; the FPGA checking legality of network messages through network message key words, and processing the illegal messages according to the message management strategy; the FPGA counting traffics of different network messages according to the network message key words, and processing the message with overrun traffic according to the message management strategy; the FPGA checking correctness of the legal network message, precisely positioning the error message according to the network message key word, and processing the abnormal message according to the message management strategy. The problem that the network message at the intelligent substation cannot be precisely inhibited is solved, the hidden danger that a network storm is capable of forming on a communication network of the intelligent substation is eliminated.

Description

technical field [0001] The present invention relates to the field of electric power system, especially relates to the network message management technology of intelligent substation process layer switch and the network message management method of intelligent substation process layer switch, specifically the management method and the adoption The switch for the method. Background technique [0002] like figure 1 As shown, at present, the process layer switches of smart substations are implemented by industrial protection level two (the second layer of the OSI model, that is, the MAC layer or media access control layer) Ethernet switches. The switch adopts a general-purpose Ethernet switching chip to realize the functional design, which conforms to the IEEE802.3 specification, and can realize the network message forwarding function based on the MAC address, and realize the number of bytes sent and received, the number of frames, the number of error frames, etc. based on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/945H04L12/931H04L12/861H04L49/116
Inventor 杨贵王风光黄伟郭雅娟姜海涛李斌吕航
Owner STATE GRID CORP OF CHINA
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