CN106452684A - Self-checking method for IEC61850 report data transmission message - Google Patents
Self-checking method for IEC61850 report data transmission message Download PDFInfo
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- CN106452684A CN106452684A CN201611122880.5A CN201611122880A CN106452684A CN 106452684 A CN106452684 A CN 106452684A CN 201611122880 A CN201611122880 A CN 201611122880A CN 106452684 A CN106452684 A CN 106452684A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a self-checking method for an IEC61850 report data transmission message. The self-checking method is characterized by particularly including the steps: A, expanding an unconfirmed PDU (protocol data unit) structure of an MMS (manufacturing message specification) by an MMS server, and increasing an MD5 (message digest 5) check code for an information report message structure to generate a report message with the check code; B, transmitting the report message with the check code on a TCP (transmission control protocol)/IP (internet protocol); C, analyzing the unconfirmed-PDU after the report message with the check code is received by an MMS client to obtain a 128-bit MD5 code and an information report message TLV (threshold limit value) with the check code; D, comparing the MD5 code and the value obtained in the step C, and indicating that data transmission is correct, and information report data are credible if the MD5 code is equal to the value. According to the method, by the aid of expansion flexibility in the transmission process of the TLV, unconfirmed-PDU definition in an IEC61850 is expanded, MD5 codes of information report message data are increased, messages can be checked when the message data are received by a data receiver, and the correct identification rate of report message transmission is greatly increased.
Description
Technical field
The present invention relates to communication technical field, the message checking method in particularly a kind of data transmission procedure.
Background technology
IEC61850 standard is the unique international standard of electric substation automation system based on universal network communication platform, be by
3 working groups 10,11,12 (WG10/11/12) of technical committee of International Electrotechnical Commission the 57th (IEC TC57) are responsible to define
's.The application of IEC61850 standard so that the engineering construction of intelligent substation becomes specification, unification and transparent, whether which
The intelligent substation engineering that system integrator sets up, can understand the knot of whole transformer station by SCD (system configuration) file
Structure and layout, have irreplaceable effect for Intelligent transformer station development.
IEC61850, as the seamless communication consensus standard of transformer station of future generation, has fully used for reference transformer substation communication, calculating
The protracted experience in the fields such as machine, Industry Control, equipment transformer station being related to using Target-oriented thought is carried out with communication service
The a set of abstract communication interface of function modeling, data modeling, and specification, makes the agreement have enough openings to adapt to not
The requirement of the transformer substation communication development coming.IEC61850 it is critical only that the ACSI (Abstract realizing specification in agreement
Communication Service Interface) to MMS (Manufacturing Message Specification) or
The mapping of other middlewares.
It is abstract to the practical experience of real world devices that the generation of ACSI derives from people, main definitions various types of communication service with
Communication object and parameter, independent with underlay communication system, unrelated with the communication protocol adopting and concrete implementation method.ACSI master
Set all kinds of service models：Connection Service model, variables access service model, data transport service model, equipment control
Service model, file transfer services model, clock synchronous service model etc., these service models define communication object and such as
What conducts interviews it is achieved that the communication of Client application end server application end to these objects, completes the access of real time data
With retrieval, the control to equipment, time report and record, self portrait of equipment etc..
IEC61850 report services are very important ACSI services, can lead to the remote measurement of device and remote signalling data
Cross the mode of data set, client request side is issued in packing；Client is passed through to send form to the IEC61850 service end of device
Control block (RCB) is reported to ask to return.
ACSI report is mapped to the InformationReport in MMS by SCSM (system communication service mapping).MMS
It is the defined communication packet specification for industrial control system of ISO/IEC9506 standard, transmission data adopts ASN.1 to compile
Code.The data cell of MMS transmission is PDU (protocol data unit), and report services are packaged as in UnconfirmedPDU
UnconfirmedService, UnconfirmedPDU data will carry out on TCP/IP by BER coded system in ASN.1
Transmission.
In practice, often occur data value network transmission or through MTU (integrated treatment unit, many for concentrating
Main website is reported and submitted in the data unification of individual device) etc. node forward after data value changes mistake, and the data of current IEC61850 passes
It is impossible to whether audit report message mistake in transmitting procedure during defeated, data receiver therefore also just cannot be ensured
Receive the correctness of message.
Content of the invention
The technical problem to be solved in the invention is to provide a kind of self-correcting proved recipe of IEC61850 reported data transmission message
Method, provides the means of data check for data receiver, improves the correct detectability of data-message transmission.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows.
A kind of self checking method of IEC61850 reported data transmission message, specifically includes following steps：
A.MMS server end is extended to the UnconfirmedPDU structure of MMS, and it is right to increase
The MD5 check code of InformationReport message structure, generates the report message of tape verifying code further；
B., the report message of transmission belt check code is carried out on TCP/IP；
After C.MMS client receives the report message of tape verifying code, parse Unconfirmed-PDU, obtain 128 MD5
Code and the InformationReport message TLV of tape verifying code；
D. comparison step C draws MD5 code and VALUE value, such as equal, then data transfer is correct,
InformationReport data is credible；If then data transfer has exception, and InformationReport data can not
Letter.
A kind of self checking method of above-mentioned IEC61850 reported data transmission message, step A specifically includes following steps：
A1. normal InformationReport structured data and Unconfirmed-PDU are generated；
A2. InformationReport structured data is carried out with MD5 calculating, produces 128 MD5 codes；
A3. according to MD5 code, generate the TLV of InformationReport-MD5 byte serial；
A4. revise length value in the TLV of PDU；
A5. complete the assembling of the Unconfirmed-PDU with MD5 check code, generate the report message of tape verifying code.
A kind of self checking method of above-mentioned IEC61850 reported data transmission message, step C specifically includes following steps：
C1. parse Unconfirmed-PDU, obtain InformationReport structure message；
C2. calculate the MD5 of InformationReport structure message, obtain 128 MD5 codes；
C3. parse Unconfirmed-PDU, take out informationreport-md5 message TLV, obtain VALUE value.
Due to employing above technical scheme, the invention technological progress is as follows.
The present invention extends flexible nature using in the transmitting procedure of TLV, and Unconfirmed-PDU in IEC61850 is defined
It is extended, increase the MD5 check code to InformationReport message data so that data receiver receives message number
According to when, message can be verified, if it is believable for verifying the data successfully, receiving；If verifying unsuccessfully,
The data receiving is insincere, illustrates that data has been likely to occur mistake in transmitting procedure；It is greatly improved data-message transmission
Correct detectability.The present invention is not only data receiver and provides a kind of means of data check, but also does not interfere with existing
Between some IEC61850 equipment and the MD5 verification decoding apparatus achieving InformationReport message data
IEC61850 communication, compatibility is good.
Specific embodiment
A kind of self checking method of IEC61850 reported data transmission message, the method is in MMS
It is extended on the basis of UnconfirmedPDU structure, increasing MD5 check code to InformationReport message structure is
InformationReportMd5, type is OCTET STRING (byte serial)；Then, after client is parsed, compare school
Test code and VALUE value, thus judging the correctness of data transfer.
Concrete steps below in conjunction with specific embodiment the present invention will be described in further detail this method.
A.MMS server end is extended to the UnconfirmedPDU structure of MMS, and it is right to increase
The MD5 check code of InformationReport message structure, generates the report message of tape verifying code further.Concrete steps are such as
Under.
A1. normal InformationReport structured data and Unconfirmed-PDU are generated.
InformationReport::=SEQUENCE
variableAccessSpecification VariableAccessSpecification,
listOfAccessResult[0]IMPLICIT SEQUENCE OF AccessResult}
Normal InformationReport structured data is as shown in following table：
A2. InformationReport structured data is carried out with MD5 calculating, produces 128 MD5 codes, as above in list
Inframe part, adds the Tag (a0) before it and Length (82 02 ab) two parts, calculating its md5 value is:03 53 88
c1 37 c5 9d 52 00 84 20 a3 ca c4 9f b5.
A3. according to MD5 code, generate the TLV of InformationReport-MD5 byte serial.
Wherein：T:0x04
L:0x10
V:03 53 88 c1 37 c5 9d 52 00 84 20 a3 ca c4 9f b5
A4. revise length value in the TLV of PDU, the byte string length of revised InformationReport-MD5 is than former
Length increased 18.
Raw footage is encoded to " 82 02 af ", and that is, length is 0x2af, after having added md5 check code, should be 0x2c1, after correction
Length coding be " 82 02 c1 ".
A5. complete the assembling of the Unconfirmed-PDU with MD5 check code, generate the report message of tape verifying code, such as following
Table.
B., the report message of transmission belt check code is carried out on TCP/IP.
Unconfirmed-PDU data presses BER coded system in ASN.1, is transmitted on TCP/IP.BER(Basic
Encoding Rules) it is the coding rule defining earliest in ASN.1, core is exactly TLV tlv triple<Type、Length、
Value>It is also possible to be considered<Tag、Length、Value>.Each domain of TLV is a series of eight hytes, for combinative structure,
Wherein V can also be TLV tlv triple.BER transfer syntax is the coding of the self-delimiting based on eight hytes, (in order to avoid not homology
Obscuring on system, does not adopt Byte to be unit) because wherein L has clearly defined the length of eight hytes.
After C.MMS client receives the report message of tape verifying code, parse Unconfirmed-PDU, obtain 128 MD5
Code and the InformationReport message TLV of tape verifying code.Comprise the following steps that.
C1. parse Unconfirmed-PDU, obtain InformationReport structure message.
InformationReport::=SEQUENCE
variableAccessSpecification VariableAccessSpecification,
listOfAccessResult[0]IMPLICIT SEQUENCE OF AccessResult}
C2. calculate the MD5 of InformationReport structure message, obtain 128 MD5 codes, i.e. 16 eight hytes, note
For MD5_1.
C3. parse Unconfirmed-PDU, take out InformationReport-MD5 message TLV,
Wherein：T:0x04
L:0x10
V:MD5 code (128,16 eight hytes)
Obtain VALUE value, be designated as MD5_2.
D. comparison step C draws MD5 code and VALUE value, that is, compare MD5_1 and MD5_2, such as equal, then data transfer
Correctly, InformationReport data is credible；If then data transfer has exception, InformationReport data
Insincere.
The present invention is extended in UnconfirmedPDU, has advantages below：1) due to informationReport
Structure is located in UnconfirmedService, and InformationReport-MD5 and UnconfirmedService is same
One level, thus without the integrity generation impact on InformationReport structure；2) due to the presence of TLV structure,
The increase of InformationReport-MD5 word string, correctly identifies the length of each structure thus without impact MMS client program
Degree；3) because InformationReport-MD5 is optional, therefore for the MMS client program having supported this extension,
Do not interfere with it and correctly process the byte serial without InformationReport-MD5 that original MMS serve end program sends
Message.
Claims (3)
1. a kind of self checking method of IEC61850 reported data transmission message is it is characterised in that specifically include following steps：
A.MMS server end is extended to the UnconfirmedPDU structure of MMS, increases and InformationReport is reported
The MD5 check code of civilian structure, generates the report message of tape verifying code further；
B., the report message of transmission belt check code is carried out on TCP/IP；
After C.MMS client receives the report message of tape verifying code, parse Unconfirmed-PDU, obtain 128 MD5 codes and
The InformationReport message TLV of tape verifying code；
D. comparison step C draws MD5 code and VALUE value, such as equal, then data transfer is correct, InformationReport number
According to credible；If then data transfer has exception, and InformationReport data is insincere.
2. a kind of IEC61850 reported data transmission message according to claim 1 self checking method it is characterised in that
Step A specifically includes following steps：
A1. normal InformationReport structured data and Unconfirmed-PDU are generated；
A2. InformationReport structured data is carried out with MD5 calculating, produces 128 MD5 codes；
A3. according to MD5 code, generate the TLV of InformationReport-MD5 byte serial；
A4. revise length value in the TLV of PDU；
A5. complete the assembling of the Unconfirmed-PDU with MD5 check code, generate the report message of tape verifying code.
3. a kind of IEC61850 reported data transmission message according to claim 1 self checking method it is characterised in that
Step C specifically includes following steps：
C1. parse Unconfirmed-PDU, obtain InformationReport structure message；
C2. calculate the MD5 of InformationReport structure message, obtain 128 MD5 codes；
C3. parse Unconfirmed-PDU, take out InformationReport-MD5 message TLV, obtain VALUE value.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733932A (en) * | 2017-11-30 | 2018-02-23 | 广州科腾信息技术有限公司 | A kind of verification of IEC61850 reported data transmissions message and self checking method |
| CN107979446A (en) * | 2017-11-30 | 2018-05-01 | 广州科腾信息技术有限公司 | A kind of bcc exclusive or check methods of IEC61850 reported data transmissions message |
| CN109167762A (en) * | 2018-08-14 | 2019-01-08 | 杭州迪普科技股份有限公司 | A kind of IEC104 message checking method and device |
| CN109257359A (en) * | 2018-10-09 | 2019-01-22 | 积成电子股份有限公司 | MMS packet parsing to IEC61850 project operation layer method |
| CN109889387A (en) * | 2019-03-07 | 2019-06-14 | 南京南瑞继保电气有限公司 | A kind of IEC61850 is again coupled to accelerated method |
| CN111049815A (en) * | 2019-12-05 | 2020-04-21 | 北京天诚同创电气有限公司 | Micro-grid communication system, communication device and control method thereof |
| CN114500328A (en) * | 2022-01-20 | 2022-05-13 | 深圳市迈睿迈特环境科技有限公司 | Data communication method, device and computer readable storage medium |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107733932A (en) * | 2017-11-30 | 2018-02-23 | 广州科腾信息技术有限公司 | A kind of verification of IEC61850 reported data transmissions message and self checking method |
| CN107979446A (en) * | 2017-11-30 | 2018-05-01 | 广州科腾信息技术有限公司 | A kind of bcc exclusive or check methods of IEC61850 reported data transmissions message |
| CN109167762A (en) * | 2018-08-14 | 2019-01-08 | 杭州迪普科技股份有限公司 | A kind of IEC104 message checking method and device |
| CN109257359A (en) * | 2018-10-09 | 2019-01-22 | 积成电子股份有限公司 | MMS packet parsing to IEC61850 project operation layer method |
| CN109889387A (en) * | 2019-03-07 | 2019-06-14 | 南京南瑞继保电气有限公司 | A kind of IEC61850 is again coupled to accelerated method |
| CN109889387B (en) * | 2019-03-07 | 2021-12-10 | 南京南瑞继保电气有限公司 | IEC61850 reconnection acceleration method |
| CN111049815A (en) * | 2019-12-05 | 2020-04-21 | 北京天诚同创电气有限公司 | Micro-grid communication system, communication device and control method thereof |
| CN111049815B (en) * | 2019-12-05 | 2022-03-01 | 北京天诚同创电气有限公司 | Micro-grid communication system, communication device and control method thereof |
| CN114500328A (en) * | 2022-01-20 | 2022-05-13 | 深圳市迈睿迈特环境科技有限公司 | Data communication method, device and computer readable storage medium |
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Application publication date: 20170222 |