Self-checking method for IEC61850 report data transmission message
A technology for data transmission and report messages, which is applied in the field of message verification, can solve problems such as the inability to guarantee the correctness of messages and the inability to check whether there are errors in report messages, and achieve the effect of improving the correct identification rate and good compatibility
Inactive Publication Date: 2017-02-22
GUANGZHOU KETENG INFORMATION TECH
View PDF4 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] In practice, it often occurs that the data value changes after the data value is transmitted on the network or forwarded by nodes such as the MTU (integrated processing unit, used to centralize the data of multiple devices and report it to the master station). However, the current IEC61850 data transmission In the process, it is impossible to check whether there is an error in the transmission of the report message, so it is impossible to guarantee the correctness of the message received by the data receiving end.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] A self-verification method for IEC61850 report data transmission message, the method is to expand on the basis of the UnconfirmedPDU structure of MMS, add the MD5 check code to the InformationReport message structure as informationReportMd5, and the type is OCTET STRING (byte string) ; Then, after the client parses, compare the check code and the VALUE value to judge the correctness of the data transmission.
[0028] The specific steps of the method will be further described in detail below in conjunction with specific embodiments of the present invention.
[0029] A. The MMS server extends the UnconfirmedPDU structure of the MMS, adds the MD5 check code of the InformationReport message structure, and further generates a report message with the check code. Specific steps are as follows.
[0030] A1. Generate normal InformationReport structure data and Unconfirmed-PDU.
[0031] InformationReport::=SEQUENCE{
[0032] variableAccessSpecification VariableAccessSpecificati...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 [0001] The invention relates to the technical field of communication, in particular to a message verification method during data transmission. Background technique [0002] The IEC61850 standard is the only international standard for substation automation systems based on a general network communication platform, and is formulated by three working groups 10, 11, and 12 (WG10 / 11 / 12) of the 57th Technical Committee of the International Electrotechnical Commission (IEC TC57). The application of the IEC61850 standard makes the implementation of smart substation projects standardized, unified and transparent. No matter which system integrator builds the smart substation project, you can understand the structure and layout of the entire substation through the SCD (system configuration) file. For smart The development of modernized substations plays an irreplaceable role. [0003] IEC61850, as the seamless communication protocol standard of the next generation subs...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/06
CPCH04L1/0061H04L63/123
Inventor 龙庆麟李爱民张庆光
Owner GUANGZHOU KETENG INFORMATION TECH