Distribution network communication optimization method based on extended IEC60870-5-104 protocol

Abstract

The invention discloses distribution network communication optimization based on extended IEC 60870-5-104. The method comprises the steps that (1) an ACSI client establishes abstract services according to corresponding needs, wherein data updating and remote control operation are comprised; (2) SCSM automatically generates an extended XML-based 104 file according to the services described by the ACSI; (3) the size of the 104 file is determined, and if the message is too large, a Huffman-LZMA compression module is enabled, otherwise normal communication is carried out; (4) an ACSI server acquires the size of the 104 file to determine whether the 104 file is compressed, and if the 104 file is compressed, a Huffman-LZMA decompression module is enabled, otherwise normal communication is carried out; and (5) the ACSI server carries out related services according to request parameters. According to the invention, the generated extended 104 file is selectively compressed; distribution network communication optimization based on extended IEC 60870-5-104 is realized; and in particular, a Huffman-LZMA algorithm is used to handle the size of the 104 file, which contributes to fast transmission of the distribution terminal model information and is conducive to plug and play of a device.

Description

technical field [0001] The invention relates to an extended IEC60870-5-104 protocol communication optimization method. The method is based on the IEC60870 standard, and proposes a distribution network communication optimization based on the extended IEC61850-5-104 protocol, which belongs to the field of power systems and automation thereof. Background technique [0002] With the continuous improvement of distribution network automation, the information interaction between distribution terminals and distribution master stations becomes more and more frequent. Most of the existing communication methods use the IEC 60870-5-101 / 104 protocol, among which the 101 protocol adopts the serial communication method, and the 104 protocol adopts the Ethernet TCP / IP communication method. These two protocols are mainly used for connecting known devices. And only data information such as status, sampling, and control can be sent, and the description of information is not involved. The exis...

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Problems solved by technology

[0008] At present, in the distribution automation system, many experts and scholars conduct application research on IEC60870-5-104. IEC60870-5-104 is very suitable for the transmission of real-time data but does not support the transmission of model information, and then proposes to extend the 104 protocol to enable it to transmit Model information, but there is no solution to the problem of excessive memory and bandwidth occupied by the extended IEC60870-5-104 protocol communication, which is an urgent need for improvement in the distribution network automation work

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