KR20110100598A - Apparatus for electric power trading based on subscriber authentication on smart grid - Google Patents

Abstract

The present disclosure relates to a subscriber authentication-based power trading device on a smart grid, which reads power consumption consumed at home / external power consumption devices and power production produced at a power generation device, and reads unit power rate information and real time information. Smart control that stores the power consumption and power production in the first security authentication module, and communicates with the server computer to perform data communication for power bill information, real-time power usage and power production information, power transaction settlement processing information The meter and a second security authentication module for distributing a key derived from a unique key of the first security authentication module connected to the smart meter are electrically connected to each other, and an internal / external power for transmitting power usage information to the smart meter. With the unique key of the first security authentication module connected to the consumer device and the smart meter The second security authentication module for distributing the derived key is electrically connected to the power generation device for transmitting the power generation information to the smart meter, and performs the subscriber authentication of the smart meter and performs subscriber authentication. It includes a server computer that performs settlement processing of power transactions for each subscriber based on real-time power usage and power production information transmitted from the smart meter. Therefore, by preventing forgery, it is possible to securely manage power rate information, perform real-time authentication between devices, and perform smooth settlement of power consumption and power production.

Description

Apparatus for electric power trading based on subscriber authentication on smart grid}

The present invention relates to an electric power trading device based on subscriber authentication on a smart grid.

Recently, a smart grid concept has emerged that connects all electricity-driven facilities and devices through various communication networks.

Smart Grid is a next-generation power grid business that combines information technology (IT) with the power grid to optimize energy efficiency and create new added value through the bidirectional information exchange.

Integrating all electrical energy-based systems around energy and communication infrastructures, the Smart Grid controls the interaction of facilities and equipment through intelligent automation, allowing the entire system to work as one organic system.

The current power system is largely composed of the power system and the communication infrastructure SCADA network to control it. The current SCADA system monitors and controls the demand of large-scale facilities over a certain scale such as generators and large-scale customers.However, in the future, when the end-users of the individual participate in the smart grid system, unlike the existing SCADA system, they actively participate in the power system ( That is, they produce electricity themselves or respond to market prices.

The existing power system uses a cumulative totalizer (mechanical analog meter), which is a concept of multiplying the accumulated power consumption over a certain period by a fixed power unit price (won / kWh) .Afterwards, real-time weighing technology has been developed steadily. The addition of the smart meter concept has emerged. Smart meters can measure electricity usage in real time and deliver real-time prices to consumers. The communication infrastructure installed for communicating these smart meters is called AMI (Advanced Metering Infrastructure).

However, since commercial information data is exchanged on the conventional smart meter and the AMI as described above, hacking and cyber security threats exist, and at the same time, security measures against personal privacy exposure threats exposed to the smart meter are also required.

That is, since private key information is conventionally stored in a meter device, there is a problem of exposing the key information by an attack such as device decomposition, or updating and managing key information. The deterioration of the property, and the distortion or forgery of the power price information stored in the meter device was possible, there was a problem that requires a separate device for encryption, decryption.

On the other hand, smart devices in the smart grid system have two-way communication and a structure that can respond to commands on their own. Therefore, serious consideration should be given to the demand side of renewable energy sources, intelligent home appliances, smart meters, grid communication, and power services. As you should see, the current system is government and business oriented.

In other words, since the one-way implementation of the smart grid can be disregarded by consumers, it is necessary to consider aspects of the smart grid from the point of view of the consumer, away from the existing government and enterprise-oriented supplier centers. This recognizes the importance of the environment to the average consumer, but it is similar to the ones that are not realistic.

Therefore, the issue of security related to smart meters, real-time remote metering and function analysis through them, and issues related to renewable energy sources, storage devices, smart home appliances, and electric vehicle charging in terms of customers, were reviewed. You will have to consider the deal.

An object of the present invention is to provide a card-based security authentication module with excellent security in each device on the smart grid, so as to solve the above problems, secure management of data, real-time authentication between devices through a separate security authentication module, It performs encryption / decryption communication between devices by generating a random session key, and based on this, smart grid enables smooth power transactions for the amount of electricity used by each subscriber and the amount of power produced by renewable energy sources. The present invention provides a power transaction apparatus based on subscriber authentication.

In accordance with an embodiment of the present invention, a subscriber authentication-based power transaction apparatus on a smart grid for realizing such an object, reads power consumption consumed by home / external power consumption devices including various home appliances and electric vehicles in real time. At the same time, the electric power produced by the electric power generating device including the renewable energy source is read in real time, and the unit power rate information and the measured electric power consumption and electric power generated in real time are stored in the electrically connected first security authentication module. Smart meter that controls and communicates with server computer that performs power transaction through communication network including power line communication and performs data communication about power rate information, real-time power usage and power production information, and power transaction settlement processing information. With the unique key of the first security authentication module connected to the smart meter The second security authentication module, which distributes and uses the derived key, is electrically connected, and is connected to the indoor / external power consumption device that transmits the power usage information used in real time inside / outside to the smart meter and the smart meter. The second security authentication module which is used to distribute the key derived from the unique key of the first security authentication module is electrically connected, the power production device for transmitting power production information generated in real time to the smart meter, and the smart meter It may include a server computer for performing the subscriber authentication, and performing the settlement processing of the power transaction for each subscriber based on the real-time power usage and power production information transmitted from each smart meter on which the subscriber authentication has been performed.

In this case, the smart meter reads power consumption based on information transmitted from the second security authentication module connected to the home / external power consumption device, and generates electricity based on information transmitted from the second security authentication module connected to the power generator. The subscriber unit of the first security authentication module electrically connected by controlling the communication connection with the meter computer and the server computer, and collectively controlling the real-time metering of power consumption and power production performed by the meter unit. The controller controls the meter reading unit to store the electricity consumption and the electricity production amount in the first security authentication module electrically connected, and the storage of the first security authentication module of the unit power charge information and the real-time power usage information and the power production information. The control unit for controlling data communication with the server computer, the first security authentication module is electrically connected The interface unit may include a communication unit performing communication connection with the server computer under the control of the controller to perform data transmission / reception related to subscriber authentication, unit power charge information, power usage information and power production information, and power transaction settlement processing information. have.

The server computer performs a subscriber authentication based on a data communication unit which transmits and receives data on key information, power usage information, and power generation information for smart meter and subscriber authentication, and key information for authentication transmitted from the smart meter through the data communication unit. It controls the accumulation and storage of power consumption amount and power generation amount based on real-time power usage and power generation information transmitted from the smart meter after subscriber authentication, and when each predetermined period arrives, power usage by each subscriber The control unit controls the settlement processing according to the power transaction based on the amount and the power generation amount, and calculates the power usage fee and power generation fee for each subscriber based on the real-time power usage and power production information transmitted from the smart meter under the control of the control unit. Accumulated and stored for each subscriber The power transaction settlement unit that performs settlement processing according to the power transaction based on the power usage amount and the electricity production amount, and key information for subscriber authentication for each smart meter are stored, and the power for each subscriber calculated by the power transaction settlement unit It may include a database that accumulates and stores the production amount and the electricity use amount, and stores the power transaction settlement processing information processed by the power transaction settlement unit.

As described above, according to the subscriber authentication-based power transaction apparatus on the smart grid of the present invention, by providing a card-based security authentication module with excellent security in each device on the smart grid, to prevent any forgery of the power rate information In addition to performing the most secure management, it is possible to perform real-time authentication between devices, and based on this, it is possible to perform smooth settlement processing of the amount of power used in real time and the amount of power produced through renewable energy sources.

In addition, the security function is strengthened by managing the subscriber module separately, the function implementation of the security of the meter developer / manufacturer is transferred to the module, and the smart meter concentrates on the inherent measurement, communication, and power counting, and the security through the security authentication module. Since separate security / password functions are separated, such as, the convenience of management is increased, and the future expandability through the use of IC card-based is increased.

1 is a view schematically showing the configuration of a subscriber authentication-based power trading device on a smart grid according to an embodiment of the present invention;
2 is a view showing in more detail the configuration of the smart meter of FIG.
3 is a view showing in more detail the configuration of the server computer of FIG.
4 is a view for explaining in more detail the concept of the smart meter and security authentication module applied to the present invention;
5 is a view schematically showing a function performed through a security authentication module applied to the present invention;
6 is a diagram illustrating an example of a smart card used in the present invention.

Hereinafter, a subscriber authentication based power transaction apparatus on a smart grid according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the configuration of a subscriber authentication-based power trading device on a smart grid according to an embodiment of the present invention.

As shown in the power transaction apparatus of the present invention, home / external power consumption device 100, power production device 200, smart meter 300, server computer 400, the first security authentication module 310, The second security authentication module 110, 210 and the like.

The indoor / external power consumption device 100 is a device that consumes power, such as various electric appliances used in the home, as well as an external electric vehicle charging station, and the first security authentication module 310 connected to the smart meter 300. The second security authentication module 110 is used to distribute the key derived from the unique key of the electrical connection, and transmits the power usage information used in real time in the home / outside to the smart meter (300).

The power generation device 200 is a device for generating power including a renewable energy source, and a second key for distributing and using a key derived from a unique key of the first security authentication module 310 connected to the smart meter 300. The security authentication module 210 is electrically connected, and transmits power production information generated in real time to the smart meter 300.

The smart meter 300 reads the power consumption consumed by the home / external power consumption device 100 including various home appliances and electric vehicles in real time, and is produced by the power production device 200 including a renewable energy source. The amount of power produced is read in real time, and the control unit is configured to store the unit power rate information and the measured power consumption and power amount in real time in the first security authentication module 310 which is electrically connected. In addition, a communication connection is performed with the server computer 400 performing the power transaction through a communication network including power line communication to perform data communication on power charge information, real-time power consumption and power production information, and power transaction settlement processing information.

In this case, the first security authentication module 310 is electrically connected to the smart meter 300, and stores key information, unit power charge information, and encryption information used for data communication for authentication of a user who uses or produces power. On the basis of the pre-stored authentication key information of the specific user, and connected to the server computer 400 performing a power transaction through the smart meter 300 to perform subscriber authentication, the home / to the electrically connected smart meter 300 Update and store power usage information and power production information transmitted from the external power consumption device 100 and the power production device 200, and transmit the power usage and power production information to the server computer 400 through the smart meter 300. send.

The server computer 400 performs subscriber authentication of the smart meter 300 and performs settlement processing of power transactions for each subscriber based on real-time power usage and power production information transmitted from each smart meter 300 on which subscriber authentication has been performed. To perform.

On the other hand, the second security authentication module 110, 210 which is electrically connected to the above-mentioned indoor / external power consumption device 100 and the power production device 200, respectively, for the authentication of the user using or producing power After receiving the key derived from the unique key of the first security authentication module 310 without storing the key information, and after performing mutual authentication with the first security authentication module 310, data communication with the smart meter 300 Do this.

Each of the first security authentication module 310 and the second security authentication module 110 and 210 preferably uses various smart cards including a SIM card.

2 is a diagram illustrating the configuration of the smart meter 300 of FIG. 1 in more detail.

As shown in the figure, the smart meter 300 includes a meter reading unit 302, a controller 304, an interface unit 306, a communication unit 308, and the like.

The meter reading unit 302 reads power usage based on information transmitted from the second security authentication module 110 connected to the home / external power consumption device 100 and the second security connected to the power production device 200. Based on the information transmitted from the authentication module 210, the power production meter is read.

The controller 304 controls the communication connection with the server computer 400 to process the subscriber authentication of the first security authentication module 310 that is electrically connected, and to perform real-time power consumption and power production performed by the meter 302. The metering control is collectively controlled, and the metering unit 302 controls to store the metered power consumption and the amount of power produced in the first security authentication module 310 that is electrically connected, and the first security authentication module of unit power rate information ( Control data storage with the server computer 400 for storage and real-time power usage information and power production information of 310.

The interface unit 306 is electrically connected to the first security authentication module 310 to perform data communication related to real-time meter reading according to unit power charge information, subscriber authentication, power consumption, and power production.

The communication unit 308 performs a communication connection with the server computer 400 under the control of the control unit 304, and transmits and receives data related to subscriber authentication, unit power charge information, power usage information and power production amount information, and power transaction settlement processing information. Do this.

3 is a diagram showing the configuration of the server computer 400 of FIG. 1 in more detail.

As illustrated, the server computer 400 includes a data communication unit 410, a control unit 420, a power transaction settlement unit 430, a database 440, and the like.

The data communication unit 410 transmits / receives data about key information, power usage information, and power production information for subscriber authentication with the smart meter 300 connected to the communication.

The control unit 420 performs subscriber authentication based on the key information for authentication transmitted from the smart meter 300 through the data communication unit 410, and real-time power consumption and power production amount transmitted from the smart meter 300 after subscriber authentication. It controls the accumulation and storage of electricity use amount and electricity generation amount based on the information, and controls settlement processing according to electricity transaction based on electricity use amount and electricity generation amount for each subscriber whenever a predetermined period arrives.

The power transaction settlement unit 430 calculates a power usage fee and a power production fee for each subscriber based on the real-time power usage and power production information transmitted from the smart meter 300 under the control of the control unit 420, and the database 440. It accumulates and stores it in the bank, and performs settlement processing according to the power transaction based on the accumulated and stored power use amount and power generation amount for each subscriber.

The database 440 stores key information for subscriber authentication for each smart meter 300, accumulates and stores power generation amount and power use amount for each subscriber calculated by the power transaction settlement unit 430, and stores power. Stores the power transaction settlement processing information processed by the transaction settlement unit 440.

On the other hand, Figure 4 is a view for explaining in more detail the concept of the smart meter and security authentication module applied to the present invention, the existing meter meter, ROM, EEPROM, encryption function, and meter reading function that is composed of a separate SIM Figure showing the separation of the first and second security authentication module of the card.

The basic design concept of the first and second security authentication modules is to store the charge information and metered charge information in the existing electricity meter in a secure memory based on smart card with excellent security. To this end, the existing smart meter has a SIM slot that can accommodate a SIM type card defined in ISO 7816.

In addition, subscriber authentication is issued by receiving the subscriber's information from the server computer operated by the power sales company, in which the security authentication module contains the key information necessary for subscriber authentication, and authenticates the subscriber based on this information in the future power grid. Done.

The first and second security authentication modules are developed as a Java card-based operating system, and develop and mount an application that can securely store security vulnerable information such as charge table information, an authentication method, and key management, in which power fees are stored. As developed based on the smart card, as shown in FIG. 5, a MAC that guarantees authentication of a subscriber, encryption of a communication interval, and data integrity can be implemented. In addition, an electronic transaction such as Internet banking is possible through an electronic signature for information on the renewable energy source and the amount of power to be traded through the subscriber's electronic signature when the electricity is traded through the renewable energy source. In addition, it is possible to organize and classify information using the smart card file system, which can be updated with the rate information table set in real time through subscriber authentication and two-way communication. The amount of electricity used by the customer's time zone is encrypted and stored securely, thereby preventing misuse due to leakage of information, thereby protecting personal privacy.

In addition, the remote management protocol (OTA) that can manage applications through the power grid can be downloaded and replaced remotely with new functions when adding new functions and changing the policy through information on the program. This is a very important feature. For example, if the charge is changed from 100 won to 1000 won due to an error in the program that controls the charge and function of the smart meter, the damage will be great. In addition, the existing method does not have a mechanism for remotely managing functions, so it is necessary to go to the home and replace it 1: 1.

Under the AMI based on the meter reading, various devices can perform power line communication (PLC), wireless communication (ZigBee), etc.In some cases, smart meters can communicate using a public network such as 3G / 4G. Can be.

6 is a view showing an example of a smart card used in the present invention, the physical characteristics and appearance of the smart card is defined in ISO 7816 Part 1. The smart card does not have a power supply, a screen display, a keyboard input device, or the like. ISO 7816 defines the power input method, data transfer, and protocol between Card Acceptance Device (CAD) and IC card to communicate with the outside. Smart cards are also defined in ISO 14443 for the functions of contactless communications in the 13.56 MHz band, such as transportation cards and financial cards. Normal smart cards support both contact and contactless communication as defined by ISO 7816.

The smart card performs encryption algorithms and protocols using data processing capability through the storage and communication of information, and provides security, as well as portability and convenience. The chip of the smart card is packaged in an integrated circuit inserted in the plastic card to provide a security means to prevent information leakage by an external attacker. In addition, it is possible to implement the latest encryption algorithm is built-in dedicated crypto dedicated processor to enhance the performance when performing security. In addition, the memory stored in the smart card is protected using a special protection mechanism, it can be stored securely encrypted by using an internal encryption key. Data exchange between card and external terminal is securely transmitted and received using digital signature and symmetric key based encryption technology. Moreover, access to smart cards requires a PIN (personal password) for authentication of the user, to prevent illegal use by unauthorized users.

Another advantage of smart cards is their portability, which is less than or equal to the size of a credit card. It is also independent of its functionality, such as the Universal Subscriber Identify Module (USIM) used in 3G mobile phones (smart cards used for 3G mobile phone authentication). In the case of 1G and 2G CDMA mobile phones, the terminal's own encryption function was used for mutual authentication with the base station and the telecommunications company. USIM has replaced the function for mutual authentication in 3G mobile phones, which combines 2.5G GSM SIM and CDMA UIM. USIM has become an essential authentication module for 3G standard subscriber services around the world, and can be roamed automatically anywhere in the world. In addition, by providing the user's authentication of the contents of cable and satellite broadcasting, viewing of unauthorized TV and users is restricted. Smart cards, which began as prepaid phone cards in the 1980s, are now used in a variety of applications, and this flexibility is the greatest potential of smart cards.

Next, various functions that can be obtained through a subscriber authentication-based power transaction apparatus on a smart grid and thus applicable fields will be described.

The power transaction apparatus according to the present invention is disallowed for unauthorized devices and use by providing a means of protecting the privacy of the customer and using the power grid of the smart meter. In addition, the billing server of the utility and billing for real-time use through end-to-end authentication and encryption.

The session key generated through the initial subscriber authentication ensures the reliability and confidentiality of two-way communication, and can be applied to other smart home appliances and renewable energy sources. In addition, the amount of power metered in real time is stored in a secure information storage medium of the subscriber authentication device, providing a model for the mutual settlement of power transactions for renewable energy sources through the information and authentication means between devices Confidentiality of the prize can be secured.

On the other hand, the subscriber authentication device (ie, the first security authentication module) related to the electricity bill is classified as a high-functional type capable of digital signature based on public key, and for the communication between smart home appliances and other devices, the basic functional subscriber authentication device ( That is, the second security authentication module) is used.

The first security authentication module equipped with the high-functional module is issued and operated for subscriber management at the power sales office (ie, server operator), and receives and manages the information through the first security authentication module on the amount of power and network use in real time. Done. The second security authentication modules used for other devices such as smart home appliances and electric vehicle charging infrastructure are basic functional devices without the electronic signature function, and the key values used for device-specific authentication and communication are used to test and evaluate the product. Certification through the distribution of keys derived from the unique key of the first security authentication module that is charged to manage the product, or electrically connected to the smart meter.

Smart home appliances and electric vehicle charging infrastructure distributed through the first security authentication module, devices that control renewable energy sources are controlled only through mutual authentication and communication with the first security authentication module built in the smart meter, renewable energy The power accumulated by the source is also mutually settled with the system through a remote meter reading by an authorized user's electricity meter.

Therefore, when performing a power transaction through the security authentication module designed in accordance with the present invention, the power seller can manage based on subscriber information for the participants in the power transaction, all the communication performs encrypted communication based on mutual authentication information Access control to block interception and control of unauthorized power sources, and encrypted MAC (Message Authentication Code) and signature values to verify data integrity and source information for each communication. The source of the source becomes clear, so the power trading base becomes transparent, and smart meter power traders can participate in and trade power trading through manual or automated programs using certificate-based digital signature techniques such as Internet banking. (Ie, transaction reliability through public key-based digital signatures).

On the other hand, in terms of effective effectiveness, the effects that can be obtained through security authentication modules used in smart meters, home / external power consumption devices, and power generation devices can be achieved by using smart cards with high security. Several security breaches associated with the service can be resolved, and customers can be trusted by providing authentication and confidentiality to subscribers for the fees and services they use.

In addition, as in the Wibro-USIM example, the terminal and the base station communicating in the middle are nothing but a relay of data for authentication and billing between the USIM and the billing server (AuC), thereby securing the terminal and other devices. This can be done without major issues, and there are advantages to management and operation since only network management that charges subscribers and charges manages USIM.

In addition, when describing the infrastructure for charging the electric car at home as an example, the biggest problem is that slow charging takes a considerable time and infrastructure is easily exposed to the outside such as a charging plug. In the case of an electric vehicle that is charged and communicated through an electric vehicle plug, the smart meter performs control and charge control on the use of electric power when charging. Therefore, the electric vehicle must be properly authenticated when charging the electric vehicle. This is to prevent money loss due to charging of unauthorized electric vehicles by others. In order to solve this problem, the security authentication module is accommodated in the control device of the electric vehicle, and the authentication of the electric vehicle owned by the user is normally performed through the power line communication of the electric vehicle plug. .

Such a system can serve in connection with a credit card company based on the smart card of the subscriber authentication device when charging is performed in public places such as a place outside the home and a parking lot in the future. In other words, if you use the card (ie SIM card) of the security authentication module issued by the credit card company, such authentication can be done other than the authentication of the person, so in public or B2B market, information about the person for the credit card payment It is linked with VAN system and can be settled by credit card.

In addition, even when a smart card-based security authentication module is linked to a CAS (Conditional Access System) system that controls content in wired / cable broadcasting such as IPTV or smart TV, power consumption and charge information managed in real time is provided through the TV. can see. In addition, if a high-performance security authentication module capable of TCP / IP communication is used, a unique IP V6 address can be accessed through web browsers of smartphones and PCs to monitor power usage and billing information in real time.

This versatile design allows the flexibility of the capabilities of smart cards to provide normal authentication and encrypted communication with other devices to perform the functions of the energy management system. In addition, this can be applied to M2M-based communication and services required for the development of various additional services such as smart home and ubiquitous.

As described above, the subscriber authentication-based power trading model according to the present invention, unlike the top-down smart grid aspects performed by large-scale providers such as the government or enterprises, consumers of consumers Through the bottom-up method of the side, the smart grid can be effectively settled, and when providing new energy service related to the smart grid in the future, it can secure the reliability of the power transaction and the bidirectional communication between devices. .

In addition, the dissemination of smart card-based security authentication module can be seen as a reliable infrastructure, so that the energy saving effect and service convenience felt by users can be linked with voluntary energy saving activities of consumers, which is an essential goal of smart grid success. Can be.

In addition, the expansion of reliable connection through the security authentication module (subscriber authentication device) is essential for the implementation of the smart grid on an infrastructure basis at the present time when standards related to smart grid interoperability are enacted worldwide. On the consumer side, it is possible to induce reliability and voluntary participation in electric power service, and through the use of automated certification techniques, it is possible to effectively block unauthorized use of renewable energy sources and grids more effectively. Can manage

Herein, while the present invention has been described with reference to the preferred embodiments, those skilled in the art will variously modify the present invention without departing from the spirit and scope of the invention as set forth in the claims below. And can be changed.

100: home / external power consumption device 110, 210: second security authentication module
200: power production equipment 300: smart meter
302: meter reading unit 304: control unit
306: interface unit 308: communication unit
310: first security authentication module 400: server computer
410: data communication unit 420: control unit
430: power trading settlement 440: database

Claims (6)

In addition to the real-time metering of the consumption of power consumed by home appliances and external power consumption devices, including various home appliances and electric vehicles, and in real-time to read the amount of electricity produced by power generation equipment, including renewable energy sources, Information and real-time metered power consumption and power production are controlled to be stored in the first security authentication module that is electrically connected, and through the communication connection with the server computer that performs the power transaction through a communication network including power line communication, the power bill information A smart meter that performs data communication on real-time power usage and power production information, power transaction settlement processing information,
A second security authentication module for distributing a key derived from a unique key of the first security authentication module connected to the smart meter is electrically connected, and the power usage information used in real time inside / outside the smart meter is stored in the smart meter. Internal / external power consumption devices,
A second security authentication module for distributing a key derived from a unique key of the first security authentication module connected to the smart meter is electrically connected, and transmits power production information generated in real time to the smart meter. Power production equipment, and
A server computer that performs subscriber authentication of the smart meter and performs settlement processing of power transactions for each subscriber based on real-time power usage and power production information transmitted from each smart meter for which subscriber authentication has been performed.
Subscriber authentication-based power trading device on a smart grid comprising. The method of claim 1,
The first security authentication module,
It is connected to the smart meter and stores key information, unit power charge information, encryption information used for data communication of the user using or producing power, and based on the authentication key information of a specific user previously stored Subscriber authentication is performed by accessing the server computer performing a power transaction through a smart meter, and power usage information and power production amount transmitted from the home / external power consumption device and the power generator to the electrically connected smart meter. Subscriber authentication-based power trading device on a smart grid for updating and storing information, and transmits power usage and power production information to the server computer through the smart meter. The method of claim 1,
The second security authentication module electrically connected to the indoor / external power consumption device and the power production device, respectively,
After receiving the key derived from the unique key of the first security authentication module without storing key information for authentication of a user who uses power or produces the data, after performing mutual authentication with the first security authentication module Subscriber authentication-based power trading device on a smart grid that performs communication. The method of claim 1,
The first security authentication module and the second security authentication module,
Subscriber authentication-based power trading device on a smart grid, which is a smart card including a subscriber identification module (SIM) card. The method of claim 1,
The smart meter,
The power consumption is read based on information transmitted from the second security authentication module connected to the home / external power consumption device, and the power production amount is read based on the information transmitted from the second security authentication module connected to the power production device. Reading,
Controls the communication connection with the server computer to process the subscriber authentication of the first security authentication module electrically connected, to collectively control the real-time metering of the power consumption and power production performed by the metering unit, and the metering unit Control to store the measured power consumption and power production in the first security authentication module that is electrically connected to each other, and the storage of the first security authentication module of unit power fee information and the real time power usage information and power production information. A control unit for controlling data communication with the server computer,
An interface unit to which the first security authentication module is electrically connected; and
A communication unit for performing communication connection with the server computer under the control of the controller to perform data transmission and reception related to subscriber authentication, unit power charge information, power usage information and power production information, and power transaction settlement processing information.
Subscriber authentication-based power trading device on a smart grid comprising. The method of claim 1,
The server computer,
A data communication unit for transmitting and receiving data on key information, power usage information, and power production information for subscriber authentication with the smart meter;
The subscriber authentication is performed based on the key information for authentication transmitted from the smart meter through the data communication unit, and after the subscriber authentication, accumulation of power usage amount and power generation amount based on real-time power usage and power production amount information transmitted from the smart meter. The controller controls the storage, and controls the settlement process according to the power transaction based on the power usage amount and power generation amount for each subscriber whenever a predetermined period of time arrives,
Under the control of the controller, the power usage fee and power generation fee for each subscriber are calculated based on the real-time power consumption and power production information transmitted from the smart meter, and the power is calculated based on the accumulated and stored power usage amount and power generation amount for each subscriber. A power transaction settlement unit that performs settlement processing according to a transaction; and
Stores key information for subscriber authentication for each smart meter, accumulates and stores power generation amount and power use amount for each subscriber calculated by the power transaction settlement unit, and setstles the power transaction processed by the power transaction settlement unit To store processing information
Subscriber authentication-based power trading device on a smart grid comprising.

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