CN106713425A - Distribution network communication optimization method based on extended IEC60870-5-104 protocol - Google Patents

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

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Publication number
CN106713425A
CN106713425A CN201611120547.0A CN201611120547A CN106713425A CN 106713425 A CN106713425 A CN 106713425A CN 201611120547 A CN201611120547 A CN 201611120547A CN 106713425 A CN106713425 A CN 106713425A
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CN
China
Prior art keywords
acsi
files
file
lzma
service
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611120547.0A
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Chinese (zh)
Inventor
梅军
应俊
王勇
张明
嵇文路
蔡月明
张志华
刘明祥
徐迅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Power Supply Company State Grid Jiangsu Electric Power Co
State Grid Corp of China SGCC
Southeast University
State Grid Jiangsu Electric Power Co Ltd
Nari Technology Co Ltd
Original Assignee
Nanjing Power Supply Company State Grid Jiangsu Electric Power Co
State Grid Corp of China SGCC
Southeast University
State Grid Jiangsu Electric Power Co Ltd
Nari Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Power Supply Company State Grid Jiangsu Electric Power Co, State Grid Corp of China SGCC, Southeast University, State Grid Jiangsu Electric Power Co Ltd, Nari Technology Co Ltd filed Critical Nanjing Power Supply Company State Grid Jiangsu Electric Power Co
Priority to CN201611120547.0A priority Critical patent/CN106713425A/en
Publication of CN106713425A publication Critical patent/CN106713425A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • H02J13/0013Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance or administration or management of packet switching networks
    • H04L41/08Configuration management of network or network elements
    • H04L41/0803Configuration setting of network or network elements
    • H04L41/0823Configuration optimization
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/12Network-specific arrangements or communication protocols supporting networked applications adapted for proprietary or special purpose networking environments, e.g. medical networks, sensor networks, networks in a car or remote metering networks

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

A kind of distribution communication optimization method based on extension IEC60870-5-104 agreements
Technical field
The present invention relates to extend IEC60870-5-104 protocol communication optimization methods, the method is based on IEC60870 standards, A kind of Distribution Network Communication optimization based on extension IEC61850-5-104 agreements is proposed, belongs to Power System and its Automation neck Domain.
Background technology
As distribution automation degree is improved constantly, distribution terminal becomes increasingly frequency with the information exchange of distribution main website It is numerous.It is in existing communication mode to use IEC 60870-5-101/104 agreements more, wherein 101 stipulations use serial communication mode, 104 stipulations use Ethernet tcp/ip communication mode, and both agreements are attached mainly for known device, and can only send out Send the data messages such as state, sampling, control, for information description without reference to.Existing scheme is by IEC 60870-5- The scheme of 104 protocol extensions realizes the transmission of description information.By reference to the message format of 104 stipulations, transmission dress is designed for The message of description information is put, the self-described function of Distributing Terminal Assembly is realized.
In transformer station, the equipment of each producer is manufactured according to different communication protocol, causes the interactivity ratio between equipment Poor, system rather unstable, IEC61850 standards are just arisen at the historic moment, and it has turned into the logical of electric substation automation system Plays Letter agreement, to realize that good interactivity provides sound assurance between the equipment for realizing different manufacturers.IEC61850 standards Mainly it is made up of following components:
A. information model:It, for the feature of description object, realizes object work(using the unified Modeling technology of object-oriented The specific division of energy, and the corresponding model set up.
B. Abstract Common Service Interface (ACSI):It is only a virtual interface, abstractively describe equipment and system it The mode of information interaction, but no how discussion is not realized specifically.
C. particular communication service maps (SCSM):It realizes the clothes described by ACSI by the concrete operations of communication network Business.
D. substation configuration description language (SCL):It is distributed to the configuration information of intelligent electronic device (IED) whole logical Letter system, while the configuration information of whole system is informed the configuration tool of IED, whole configuration process be related to ICD, SSD, SCD and the class files of CID tetra-.
At present, in electrical power distribution automatization system, many experts and scholars carry out application study to IEC60870-5-104, IEC60870-5-104 is especially suitable for the transmission but the not transmission of support model information of real time data, and then proposes that extension 104 is assisted View enables mode information, but is directed to the extension excessive committed memory of IEC60870-5-104 protocol communications and bandwidth is asked Topic is not provided with solution, and this is urgently improved link in distribution network automated work.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide one kind based on extension IEC60870-5- The distribution communication optimization method of 104 agreements, promotes stipulations to unify, and reduces stipulations conversion work, strengthens distribution network construction.
In order to realize above-mentioned goal of the invention, the present invention uses following technical schemes:One kind is based on extension IEC60870- The distribution communication optimization method of 5-104 agreements, comprises the following steps that:
Step one, Abstract Common Service Interface ACSI clients set up abstract service according to corresponding demand;
The service that step 2, particular communication service mapping SCSM are described according to ACSI, automatically generates the expansion based on XML Open up 104 files;
Step 3, the size for judging 104 files, if text is more than 256 bytes, enable Huffman-LZMA compression moulds Block, conversely, then proper communication.
Whether step 4, ACSI server ends obtain 104 files, judge 104 files through overcompression, are to enable Huffman-LZMA decompression modules, conversely, then proper communication;
Step 5, ACSI server ends perform related service operation according to required parameter.
Further, in step 3, the Huffman-LZMA compression modules are specific as follows:104 files are extracted first XML document, then carries out XML document to be divided into element set, then sets up corresponding dictionary according to character frequency;To element Coding, forms code table, corresponding coding is changed into according to code table character, so as to obtain byte group file;Finally start LZMA compressions Be stored in compressed file in database waiting for transmission to the compressing file after coding by module, and server end is sent to afterwards.
Further, in step 4, the Huffman-LZMA decompression modules are specific as follows:XML is extracted from 104 files Condensed document, starts LZMA decompression modules, and coding is translated into corresponding word by byte group file code table according to known to of decompression Symbol, according to<Character, frequency>Dictionary sets up XML element set, reduces XML document.
Further, in step one, Abstract Common Service Interface ACSI is a conceptual interface in power distribution network, therefore What ACSI clients were set up under corresponding demand is abstract service, including data renewal and straighforward operation.
Further, in step 2, particular communication service maps SCSM according to described by Abstract Common Service Interface ACSI Service, using specific communication network, automatically generate 104 files based on XML of extension.
Further, in step 5, the SCSM of ACSI server ends can pass through according to specific required parameter in 104 files Specific communication network, calls related application to perform service operations.
Compared with prior art, the beneficial effect that reaches of the present invention is:The method that the present invention provides distribution communication optimization, it is real Having showed the 104 expanded files in power distribution network can carry out information exchange, not excessive occupancy communication network with appropriate size The bandwidth and internal memory of network, improve the efficiency of transmission of distribution terminal information model.It is Huffman codings by Huffman-LZMA algorithms Selectivity treatment with LZMA compressions to 104 files, realizes the saving for saving the network bandwidth and internal memory, beneficial to inserting for equipment I.e. with the proper communication with distribution.
Brief description of the drawings
Fig. 1 is Huffman-LZMA compression/decompression process;
Fig. 2 compresses for adaptive H uffman-LZMA.
Specific embodiment
The implementation method of this programme is done below in conjunction with the accompanying drawings further specifically is illustrated.
The present invention proposes a kind of distribution communication optimization method based on extension IEC60870-5-104 standards.ACSI clients Abstract service is set up according to corresponding demand, is updated and straighforward operation etc. including data.SCSM is particular communication service mapping, root According to the service described by Abstract Common Service Interface (ACSI), using specific communication network, automatically generate based on XML Extend 104 files.104 files to producing are pre-processed the size for scanning 104 files, if it find that 104 documents are carried Information content is excessive, enables Huffman-LZMA compression mechanisms, reduces by 104 files in the network bandwidth and the occupancy of internal memory.Conversely, then Proper communication.ACSI server ends obtain 104 files, while 104 files to receiving are detected, if it find that this message is Through overcompression, then Huffman-LZMA decompression modules are enabled, conversely, proper communication.The SCSM of ACSI server ends can basis Specific required parameter calls the application program of correlation to perform service operations by specific communication network in 104 files.
In order to strengthen the function in power distribution network, should be using Huffman-LZMA algorithms to the selectivity compression treatment of 104 files. 104 compressing files are applied to Huffman-LZMA below and launch detailed specific description.
(1) in actual power distribution network, Abstract Common Service Interface (ACSI) is a conceptual interface, and it can be according to phase The demand answered sets up abstract service, for example when data timing renewal or active renewal and straighforward operation, it is impossible to specifically go Complete the service described by it.
(2) service described by Abstract Common Service Interface (ACSI) is using tool by particular communication service mapping (SCSM) The network of body goes to realize that SCSM generates 104 files by the related application program of specific network call.The message package is containing pass In the required parameter of service.
(3) because 104 files are communicated based on XML document, actually caused there may be larger volume of transmitted data The network bandwidth and internal memory are pre-processed before its transmission by excessive occupancy to 104 files, and whether 104 files of detection exceed 256 bytes, enable compression mechanism if excessive, and the XML document of 104 files is extracted first, are then divided XML document Into element set, then corresponding dictionary is set up according to character frequency.Element is encoded, code table is formed, changed according to code table character Into corresponding coding, so as to obtain byte group file.Finally start LZMA compression modules to the compressing file after coding, will compress File is stored in database waiting for transmission, and server end is sent to afterwards.
(4) ACSI server ends obtain 104 files after receiving request.XML condensed documents are extracted from 104 files, is started Coding is translated into corresponding character by LZMA decompression modules, byte group file code table according to known to of decompression, according to<Character, Frequency>Dictionary sets up XML element set, reduces XML document.
(5) SCSM of ACSI server ends can pass through specific communication network according to specific required parameter in 104 files, Related application is called to perform service operations.
In sum, the present invention utilizes Huffman-LZMA compression/decompression algorithms, 104 files that distribution is extended XML document is compressed/decompresses, and has invented in power distribution network optionally compression/de-compression XML file, beneficial to equipment Plug and play.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (6)

1. it is a kind of based on the distribution communication optimization method for extending IEC60870-5-104 agreements, it is characterised in that specific steps are such as Under:
Step one, Abstract Common Service Interface ACSI clients set up abstract service according to corresponding demand;
The service that step 2, particular communication service mapping SCSM are described according to ACSI, automatically generates the extension based on XML 104 files;
Step 3, the size for judging 104 files, if file enables Huffman-LZMA compression modules more than 256 bytes, Conversely, then proper communication.
Whether step 4, ACSI server ends obtain 104 files, judge 104 files through overcompression, are to enable Huffman- LZMA decompression modules, conversely, then proper communication;
Step 5, ACSI server ends perform related service operation according to required parameter.
2. according to claim 1 based on the distribution communication optimization method for extending IEC60870-5-104 agreements, its feature It is that in step 3, the Huffman-LZMA compression modules are specific as follows:The XML document of 104 files is extracted first, then XML document is carried out to be divided into element set, then corresponding dictionary is set up according to character frequency;Element is encoded, code is formed Table, changes corresponding coding into, so as to obtain byte group file according to code table character;After finally starting LZMA compression modules to coding Compressing file, compressed file is stored in database waiting for transmission, server end is sent to afterwards.
3. according to claim 2 based on the distribution communication optimization method for extending IEC60870-5-104 agreements, its feature It is that in step 4, the Huffman-LZMA decompression modules are specific as follows:XML condensed documents are extracted from 104 files, is opened Coding is translated into corresponding character by dynamic LZMA decompression modules, byte group file code table according to known to of decompression, according to<Word Symbol, frequency>Dictionary sets up XML element set, reduces XML document.
4. according to claim 1 based on the distribution communication optimization method for extending IEC60870-5-104 agreements, its feature It is that in step one, Abstract Common Service Interface ACSI is a conceptual interface in power distribution network, therefore ACSI clients exist What is set up under corresponding demand is abstract service, including data renewal and straighforward operation.
5. according to claim 1 based on the distribution communication optimization method for extending IEC60870-5-104 agreements, its feature It is that in step 2, particular communication service maps services of the SCSM according to described by Abstract Common Service Interface ACSI, using tool The communication network of body, automatically generates 104 files based on XML of extension.
6. according to claim 1 based on the distribution communication optimization method for extending IEC60870-5-104 agreements, its feature It is that in step 5, the SCSM of ACSI server ends can be according to specific required parameter in 104 files by specific communication network Network, calls related application to perform service operations.
CN201611120547.0A 2016-12-08 2016-12-08 Distribution network communication optimization method based on extended IEC60870-5-104 protocol Pending CN106713425A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109710420A (en) * 2018-11-16 2019-05-03 积成电子股份有限公司 A kind of access method of IEC61850 model

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN101719694A (en) * 2009-12-16 2010-06-02 北京四方继保自动化股份有限公司 Device for analyzing network communication record of digital transformer substation
CN102158381A (en) * 2011-02-25 2011-08-17 上海许继电气有限公司 Dual-mode network data acquisition device in smart grid and network data acquisition system
CN103593326A (en) * 2013-11-07 2014-02-19 国家电网公司 IEC61850 software library assembly for network processing unit chip and achieving method of IEC61850 software library assembly
CN104821936A (en) * 2015-03-24 2015-08-05 广东电网有限责任公司电力科学研究院 System for realizing IEC61850 station level communication protocol based on socket and ASN.1
CN105577655A (en) * 2015-12-17 2016-05-11 珠海博威电气有限公司 104 protocol expansion method applied to distribution network automation station terminal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101719694A (en) * 2009-12-16 2010-06-02 北京四方继保自动化股份有限公司 Device for analyzing network communication record of digital transformer substation
CN102158381A (en) * 2011-02-25 2011-08-17 上海许继电气有限公司 Dual-mode network data acquisition device in smart grid and network data acquisition system
CN103593326A (en) * 2013-11-07 2014-02-19 国家电网公司 IEC61850 software library assembly for network processing unit chip and achieving method of IEC61850 software library assembly
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109710420A (en) * 2018-11-16 2019-05-03 积成电子股份有限公司 A kind of access method of IEC61850 model

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