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SMV and GOOSE message filter method based on FPGA

A message filtering and message technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of difficult to guarantee the real-time performance of network data transmission, complex Ethernet network mechanism, etc., to solve the problems of network stress testing, The effect of improving processing efficiency and improving performance

Inactive Publication Date: 2016-06-08
NARI TECH CO LTD +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the complexity of the Ethernet network mechanism, it is difficult to guarantee the real-time performance of network data transmission, especially in the case of heavy network pressure

Method used

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  • SMV and GOOSE message filter method based on FPGA
  • SMV and GOOSE message filter method based on FPGA
  • SMV and GOOSE message filter method based on FPGA

Examples

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Embodiment 1

[0024] In an embodiment of the present invention, the FPGA module is set for message filtering in the power automation device, such as figure 2 shown. The FPGA includes an internal bus interface, an internal MAC network port and a filtering module corresponding to each internal MAC network port. The CPU of the power automation device exchanges data with the FPGA through the bus interface inside the FPGA, and the FPGA receives external messages through the internal MAC. image 3 with Figure 4 The schematic diagram of applying this scheme to SMV board and GOOSE board is given respectively. exist image 3 with Figure 4 In some occasions, the FPGA completes the filtering work of SMV or GOOSE messages respectively. Its filtering steps are as follows figure 1 shown.

[0025] figure 1 In step 1, after the FPGA chip in the power automation device receives a complete frame of SMV or GOOSE message through the internal MAC, it scans the MAC address table of the filter module c...

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Abstract

The invention discloses an SMV and GOOSE message filter method based on an FPGA, belongs to the technical field of power system automation. According to the method provided by the invention, after the FPGA receives a frame of SMW or GOOSE messages completely through an internal MAC, MAC address filter is carried out firstly; then APPID filter is carried out; then CRC check code filter is carried out; after passing through the processes, ASN.1 decoding is carried out to the messages; key fields of the messages are extracted; legality check is carried out; finally secure bandwidth filter is carried out; and the messages passing through all the filter items are sent to a CPU for follow-up processing. Through the method provided by the invention, the difficulty of testing SMV and GOOSE message network pressures in a power automation device is solved; the system efficiency is further improved; and the hardware cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of power system automation, and in particular the invention relates to an FPGA-based SMV and GOOSE message filtering method. Background technique [0002] As the foundation of smart grid, smart substation has become the trend of substation construction and development. Smart substation is a new generation of substation technology that conducts in-depth mining and comprehensive analysis of substation information on the basis of applying the IEC61850 standard. For power automation devices, there are obvious differences between it and traditional substations in sampling and control methods. In terms of sampling methods, the original AD sampled analog quantity is converted to digital quantity sampling by IEC61850SMV protocol through the merging unit (MU); the original switch quantity acquisition is changed to digital quantity transmitted by IEC61850GOOSE protocol. In terms of control methods, the traditional h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26
CPCH04L43/028
Inventor 叶振风颜云松徐军许高阳王计林范腾郭勋李雪明高旭任建锋徐海波马迎新江知翰朱传宏司庆华
Owner NARI TECH CO LTD
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