CN113542212B - Virtual power plant peak shaving instruction safety authentication method - Google Patents
Virtual power plant peak shaving instruction safety authentication method Download PDFInfo
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- CN113542212B CN113542212B CN202110555242.7A CN202110555242A CN113542212B CN 113542212 B CN113542212 B CN 113542212B CN 202110555242 A CN202110555242 A CN 202110555242A CN 113542212 B CN113542212 B CN 113542212B
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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
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
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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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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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
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/101—Access control lists [ACL]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
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Abstract
The invention provides a security authentication method for peak regulation instructions of a virtual power plant, which is a security authentication method for completing the peak regulation instructions by adopting an extended data enhanced authentication interaction process between a main station system and a DER response substation system of the virtual power plant. The extended data enhanced authentication interaction process is completed by five units of a password center, a virtual power plant master station encryption authentication module, a virtual power plant master station database, a DER response substation encryption authentication module and a DER response substation database in a cooperation mode. According to the technical characteristics of strong suitability and convenient implementation, the method has the technical characteristics of meeting the application scenarios of various terminals and protocols of the DER of the virtual power plant.
Description
Technical Field
The invention relates to the technical field of virtual power plant system safety, in particular to a safety authentication method for a virtual power plant to carry out peak regulation instructions on peak regulation resources of a user side and the like through an operator public network or a third party network.
Background
The virtual power plant aggregates distributed power sources, controllable loads, energy storage systems, electric vehicles and other different types of distributed power source resources (DERs) through advanced control, metering, communication and other technologies, and realizes coordinated and optimized operation of a plurality of distributed energy sources in a higher-level software framework, so that the virtual power plant can participate in operation of an electric power market and an auxiliary service market, and real-time electric energy transaction is realized. After receiving the peak regulation instruction of power grid dispatching, the virtual power plant decomposes the peak regulation requirement into DER, and then reaches the control system of each distributed power supply under the peak regulation instruction through IEC60870-5-104 protocol or MQTT Internet of things protocol, and finally realizes coordination control. The network physical isolation technology is generally adopted between the power grid dispatching mechanism and the virtual power plant to ensure the safety of a power grid dispatching communication network area, and the virtual power plant system also mostly adopts the technologies of firewall, intrusion monitoring, VPN access and the like to ensure the network safety. Because distributed power supplies such as distributed power supplies, controllable loads and electric vehicles often belong to different property units, and data communication is carried out by adopting an operator public network or a third party network, the safety authentication of peak shaving instructions has significance for the safe operation of the system.
Due to diversity of DER equipment, a plurality of protocols such as IEC60870-5-104, MQTT and the like are required to be supported, unified identity authentication means are lacked, most of the authentication means are respectively realized by an application layer, and management complexity is high. The IEC60870-5-104 protocol is an industrial control type protocol for a closed network environment, lacks necessary instruction authentication means, and adopts secure communication technologies such as TSL tunnel and the like at the TCP level. MQTT is TCP-based and by default the communication is not encrypted, and TSL may be used to implement secure encrypted communication when sensitive information is transmitted or the device is controlled. X509 provides both perfect encryption and verification, but the lifecycle management of X509 certificates is costly to the username-password, and is therefore mostly solved by the application layer by means of the username-password. In fact, due to the distributed characteristics of the DER of the virtual power plant, the method is limited by the reasons above, a low-cost instruction data authentication means is lacked for authenticating the source of the peak regulation instruction, the distributed user points are wide, once network intrusion or identity impersonation occurs, the stable operation of the user asset of the virtual power plant is threatened, and the economic loss of the user is caused in a wide range; further, the peak regulation capacity of the virtual power plant is limited, and the safe operation of the power grid system is affected. Therefore, a method for directly performing security authentication on peak-to-peak instruction is urgently needed.
Disclosure of Invention
In order to solve the technical problems of the background technology, the invention provides a virtual power plant peak regulation instruction safety authentication method, which realizes safety authentication by conforming to the communication protocol specifications such as IEC60870-5-104 or MQTT, adds dynamic identity authentication signature data in the data content carried by the protocol, adds an authentication flow outside the protocol communication flow, does not change the original data transmission mechanism, has strong adaptability, simultaneously has the technical characteristics of convenient implementation, and meets the application scenes of various terminals and protocols of the DER of the virtual power plant.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a security authentication method for peak regulation instructions of a virtual power plant is characterized in that an extended data enhanced authentication interaction process is adopted between a main station system and a DER response substation system of the virtual power plant, and the security authentication method for the peak regulation instructions is completed.
The extended data enhanced authentication interaction process is completed by five units of a password center, a virtual power plant master station encryption authentication module, a virtual power plant master station database, a DER response substation encryption authentication module and a DER response substation database in a cooperation mode.
The cipher center is responsible for distributing keys to the virtual power plant master station encryption and authentication module and the DER response substation encryption and authentication module for encryption and authentication in the communication process;
the virtual power plant master station encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of the master station side, and verification is not passed through session termination;
the DER response substation encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of a substation side, and verification of failure of session termination;
the virtual power plant master station database is responsible for data exchange between the virtual power plant master station encryption authentication module and original data transmission, and the data exchange content comprises;
the DER response substation database is responsible for data exchange between the DER response substation encryption authentication module and original data transmission.
Further, the extended data enhanced authentication interaction process specifically includes the following steps:
the method comprises the following steps of: xmain represents a virtual power plant master station encryption and authentication module; xsub represents the DER response substation encryption authentication module; IBC represents a cryptographic center; DBmain represents a virtual power plant master database; DBsub represents DER response substation database;
step one, xmain uses an artificial parameter to set a system identifier as an identity ID, applies a key to an IBC through a channel protected by TSL encryption, and adds identity ID information to a trusted master station list of the Xsub;
reading a hardware unique ID as an identity ID, applying a key to the IBC through a TSL (secure traffic channel) encryption protection channel, and adding the Xsub identity ID information to a trusted substation list of the Xmain;
step three, the Xmain obtains the peak shaving instruction data content from the DBmain, generates signature data by using a master station key and a random number, and stores the peak shaving instruction signature data into the DBmain;
step four, the virtual power plant master station system packages the peak shaving instruction data, the random number and the peak shaving instruction signature data according to the protocol extension agreed authentication data information body address or information code and sends the packaged information body address or information code to the DER response substation system through a network after the information body address or information code is packaged according to the protocol specification;
step five, after the DER response substation system receives the peak shaving instruction data, the random number and the peak shaving instruction signature data, the data are stored in the DBsub;
step six, the Xsub acquires peak shaving instruction data content, random numbers and peak shaving instruction signature data from the DBsub, checks whether the identity ID of the master station is in a trusted master station list of the Xsub, and directly obtains that verification is not passed if the identity ID is not in the trusted master station list; if yes, checking signature by using the peak regulation instruction data content, the random number and the peak regulation instruction signature data of the master station ID public key to obtain a verification passing result, and storing the verification result into the DBsub;
and step seven, if the verification fails, the Xsub gives up the peak shaving instruction, a log that the peak shaving instruction fails to pass the verification is generated, and otherwise, the DER responds to the normal service function of the substation system.
Compared with the prior art, the invention has the beneficial effects that:
in the virtual power plant peak shaving instruction safety authentication method, authentication signature information is inserted into a normal protocol message according to communication protocol specifications such as IEC60870-5-104 or MQTT, and the signature and authentication of peak shaving instruction data are realized on the basis of keeping protocol standards. And an authentication encryption module is respectively deployed in the virtual power plant master station system and the DER response substation system, signature authentication is only carried out on the instruction data, the calculated amount is small, and the influence of encryption authentication on the time delay of network communication is reduced.
Drawings
FIG. 1 is a schematic diagram of an interactive process of a virtual power plant peak shaver instruction security authentication method of the present invention;
FIG. 2 is a schematic structural diagram of a virtual power plant peak shaver instruction security authentication method according to the present invention;
FIG. 3 is a flow chart of a virtual power plant peak shaver instruction security authentication method of the present invention.
Detailed Description
The following detailed description of the embodiments of the invention is provided with reference to the accompanying drawings.
As shown in FIG. 1, the security authentication method for the peak shaving instruction of the virtual power plant is implemented by adopting an extended data enhanced authentication interaction process between a main station system and a DER response substation system of the virtual power plant.
As shown in FIG. 2, the extended data enhanced authentication interaction process is cooperatively completed by five units, namely a password center, a virtual power plant master station encryption and authentication module, a virtual power plant master station database, a DER response substation encryption and authentication module and a DER response substation database.
The cipher center is responsible for distributing keys to the virtual power plant master station encryption and authentication module and the DER response substation encryption and authentication module for encryption and authentication in the communication process.
The virtual power plant master station encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of the master station side, and the verification is not terminated through a session.
The DER response substation encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of the substation side, and verification of failure of session termination.
The virtual power plant master station database is responsible for data exchange between the virtual power plant master station encryption authentication module and original data transmission, and the data exchange content comprises.
The DER response substation database is responsible for data exchange between the DER response substation encryption authentication module and original data transmission.
As shown in fig. 3, the extended data enhanced authentication interaction process specifically includes the following steps:
the method comprises the following steps of: xmain represents a virtual power plant master station encryption and authentication module; xsub represents the DER response substation encryption authentication module; IBC represents a cryptographic center; DBmain represents a virtual power plant master database; DBsub represents DER response substation database;
step one, xmain uses an artificial parameter to set a system identifier as an identity ID, applies a key to an IBC through a channel protected by TSL encryption, and adds identity ID information to a trusted master station list of the Xsub;
reading a hardware unique ID as an identity ID, applying a key to the IBC through a TSL (secure traffic channel) encryption protection channel, and adding the Xsub identity ID information to a trusted substation list of the Xmain;
step three, the Xmain obtains the peak shaving instruction data content from the DBmain, generates signature data by using a master station key and a random number, and stores the peak shaving instruction signature data into the DBmain;
step four, the virtual power plant master station system packages the peak shaving instruction data, the random number and the peak shaving instruction signature data according to the protocol extension agreed authentication data information body address or information code and sends the packaged information body address or information code to the DER response substation system through a network after the information body address or information code is packaged according to the protocol specification;
step five, after the DER response substation system receives the peak shaving instruction data, the random number and the peak shaving instruction signature data, the data are stored in the DBsub;
step six, the Xsub acquires peak shaving instruction data content, random numbers and peak shaving instruction signature data from the DBsub, checks whether the identity ID of the master station is in a trusted master station list of the Xsub, and directly obtains that verification is not passed if the identity ID is not in the trusted master station list; if yes, checking signature by using the peak regulation instruction data content, the random number and the peak regulation instruction signature data of the master station ID public key to obtain a verification passing result, and storing the verification result into the DBsub;
and step seven, if the verification fails, the Xsub gives up the peak shaving instruction, a log that the peak shaving instruction fails to pass the verification is generated, and otherwise, the DER responds to the normal service function of the substation system.
According to the method, according to the peak shaving instruction characteristics of the virtual power plant, the communication protocol specifications such as IEC60870-5-104 or MQTT are followed, authentication signature information is inserted into a normal protocol message, and the signature and authentication of the peak shaving instruction data are realized on the basis of keeping the protocol standard. And an authentication encryption module is respectively deployed in the virtual power plant master station system and the DER response substation system, signature authentication is only carried out on the instruction data, the calculated amount is small, and the influence of encryption authentication on the time delay of network communication is reduced.
The above examples are implemented on the premise of the technical scheme of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the above examples. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (1)
1. The method is characterized in that an extended data enhanced authentication interaction process is adopted between a virtual power plant main station system and a DER response substation system, so that the security authentication method for the peak regulation instruction is completed;
the extended data enhanced authentication interaction process is completed by five units of a password center, a virtual power plant master station encryption authentication module, a virtual power plant master station database, a DER response substation encryption authentication module and a DER response substation database in a cooperation mode;
the cipher center is responsible for distributing keys to the virtual power plant master station encryption and authentication module and the DER response substation encryption and authentication module for encryption and authentication in the communication process;
the virtual power plant master station encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of the master station side, and verification is not passed through session termination;
the DER response substation encryption authentication module is responsible for key application, identity authentication signature data generation, data signature verification and verification of a substation side, and verification of failure of session termination;
the virtual power plant master station database is responsible for data exchange between the virtual power plant master station encryption authentication module and original data transmission, and the data exchange content comprises;
the DER response substation database is responsible for data exchange between the DER response substation encryption authentication module and original data transmission;
the extended data enhanced authentication interaction process specifically comprises the following steps:
the method comprises the following steps of: xmain represents a virtual power plant master station encryption and authentication module; xsub represents the DER response substation encryption authentication module; IBC represents a cryptographic center; DBmain represents a virtual power plant master database; DBsub represents DER response substation database;
step one, xmain uses an artificial parameter to set a system identifier as an identity ID, applies a key to an IBC through a channel protected by TSL encryption, and adds identity ID information to a trusted master station list of the Xsub;
reading a hardware unique ID as an identity ID, applying a key to the IBC through a TSL (secure traffic channel) encryption protection channel, and adding the Xsub identity ID information to a trusted substation list of the Xmain;
step three, the Xmain obtains the peak shaving instruction data content from the DBmain, generates signature data by using a master station key and a random number, and stores the peak shaving instruction signature data into the DBmain;
step four, the virtual power plant master station system packages the peak shaving instruction data, the random number and the peak shaving instruction signature data according to the protocol extension agreed authentication data information body address or information code and sends the packaged information body address or information code to the DER response substation system through a network after the information body address or information code is packaged according to the protocol specification;
step five, after the DER response substation system receives the peak shaving instruction data, the random number and the peak shaving instruction signature data, the data are stored in the DBsub;
step six, the Xsub acquires peak shaving instruction data content, random numbers and peak shaving instruction signature data from the DBsub, checks whether the identity ID of the master station is in a trusted master station list of the Xsub, and directly obtains that verification is not passed if the identity ID is not in the trusted master station list; if yes, checking signature by using the peak regulation instruction data content, the random number and the peak regulation instruction signature data of the master station ID public key to obtain a verification passing result, and storing the verification result into the DBsub;
and step seven, if the verification fails, the Xsub gives up the peak shaving instruction, a log that the peak shaving instruction fails to pass the verification is generated, and otherwise, the DER responds to the normal service function of the substation system.
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| CN114095223A (en) * | 2021-11-12 | 2022-02-25 | 许昌许继软件技术有限公司 | IEC 60870-5-104-based power device safety access system and control method thereof |
| CN114531265B (en) * | 2021-11-26 | 2023-09-26 | 国网浙江省电力有限公司嘉兴供电公司 | Terminal safety access and data protection method based on virtual power plant |
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