A method of intrusion detection for iec61850 digital substation smv message

A technology of IEC61850 and digital substation, which is applied in the direction of electrical components and transmission systems, and can solve the problems of security hardening and IEC62351 encryption and digital verification.

Active Publication Date: 2020-12-11
国网江苏省电力有限公司淮安供电分公司 +3
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Problems solved by technology

[0006] The present invention provides a method for implementing intrusion detection of SMV messages in IEC61850 digital substations, and aims to solve the problem that the security reinforcement of SMV messages in the IEC61850 standard in the prior art usually cannot pass the encryption and digital verification of IEC62351 in practical applications method to complete

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  • A method of intrusion detection for iec61850 digital substation smv message
  • A method of intrusion detection for iec61850 digital substation smv message
  • A method of intrusion detection for iec61850 digital substation smv message

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Embodiment Construction

[0022] The present invention provides a safety and compliance detection method for SMV messages used for transmitting various analog measurements in the IEC61850 digital substation between intelligent devices (IEDs). The present invention can quickly detect the presence of Various SMV data packets with non-compliance risks.

[0023] Depend on figure 1 , 2 It can be seen that the communication protocol stack of the SMV service consists of the application layer, transport layer, network layer, data link layer and physical layer, and both the transport layer and the network layer are empty. In this way, the length of the SMV message can be shortened, the delay of transmission can be reduced, and the requirement of real-time transmission of measurement data in a digital substation can be met. The application layer defines the application protocol unit (APDU) of the IEC61850-SMV message, the presentation layer encodes the APDU according to ASN.1 BER, and the data link layer sets ...

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Abstract

The invention discloses an intrusion detection method for an SMV (Sampled Measured Value) message of an IEC61850 digital substation. The method mainly consists of the following three steps: rapid filtering and data structuring of the SMV message, multistage correlative detection of a data unit of an SMV frame message, and hazard assessment of the SMV message. Through adoption of the intrusion detection method, the problem that security reinforcement of the SMV message in an IEC61850 standard cannot be generally finished through encryption and digital verification methods of IEC62351 in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of IEC61850 digital substation safety, adopts the message template matching technology to realize the structured restoration and presentation of SMV message data, and realizes a SMV data message in the IEC61850 intelligent substation through the context multi-level correlation analysis technology of the message method of intrusion detection. Background technique [0002] IEC61850 is an international standard for substation automation systems based on a common network communication platform, which can realize interoperability and protocol conversion of substation automation system products. Adopting the IEC61850 standard can make the substation automation equipment have the characteristics of self-description, self-diagnosis and plug-and-play, which greatly simplifies the integration of the digital substation system and reduces the cost of the substation automation system. [0003] The IEC61850 standard also makes the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L63/1416H04L63/1425
Inventor 刘建戈吕兵罗坤金鑫
Owner 国网江苏省电力有限公司淮安供电分公司
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