The invention discloses a smart power grid aggregation method and system for differential privacy security and fault tolerance The method comprises the steps that a smart electric meter records and reports the electricity consumption of users in real time; a control center is responsible for collecting, processing and analyzing real-time electricity consumption data; a gateway is responsible for instruction delivery, data aggregation and security transmission between the control center and the users; a credible center is responsible for managing the whole system, and main function modules include a system initialization function module, a data aggregation request function module, a data aggregation request relay function module, a user data report function module, a security data aggregation function module and an aggregated data recovery module According to the smart power grid aggregation method and system, the common fault tolerant function is supported, a difference privacy attack can be resisted, and the phenomenon that a hostile attacker exposes and obtains privacy information of the users by eavesdropping user communication links can be resisted; when some user data are not reported successfully, the electricity consumption of all the users with normal data reporting can still be aggregated; the smart power grid aggregation method and system have the high elastic expandability and can support efficient million-scale smart power grid electricity consumption data aggregation

Smart power grid aggregation method and system for differential privacy security and fault tolerance

The invention discloses a privacy protecting area user electricity quantity aggregation system and method for an intelligent power grid The system is provided with a secondary gateway structure and specifically comprises a control center (CC), an area gateway (AGW), a social area gateway (RAGW) and a home area network (HAN) The method comprises the six steps of system initialization, user report generation, privacy protecting fine grit electricity consumption aggregation (user electricity quantity aggregation of a certain community), privacy protecting coarse grit electricity consumption aggregation (user electricity quantity aggregation of multiple communities), response generation and response reception Under the circumstance of ensuring that user privacy is not disclosed, the electricity need of the intelligent power grid can be monitored and responded flexibly, and the system has high practicality; the counterfeit resisting batch verifying method is put forward, and the efficiency of the scheme is improved

Privacy protecting area user electricity quantity aggregation system and method for intelligent power grid

The invention discloses an aggregation method and system supporting fault tolerance and resisting differential attacks in a smart power grid. According to the method, a smart electric meter is used for recording and reporting the power consumption of users in real time; a control center is responsible for collecting, processing and analyzing real-time power consumption data of the users; a gateway is responsible for data aggregation; a trusted center is responsible for the whole system. Main modules include a system initialization module, a data aggregation request module, a data aggregation request relay module, a user data reporting module, a security data aggregation module and an aggregated data recovery module. A security data aggregation system is realized and is used for protecting power consumption privacy of the users, preventing a vicious external attacker and an electric energy control center from abusing authority and effectively resisting malicious software instrumentation and attacks; since an auxiliary ciphertext is introduced, physical and communication fault tolerance is achieved, and it is guaranteed that the power consumption data of the users can still automatically aggregate and be reported successfully on the condition that a part of the power consumption data fails to be reported.

Aggregation method and system supporting fault tolerance and resisting differential attacks in smart power grid

The invention discloses a system and a method of charging step tariff applied to a power user end. Power utilization time and an electric meter code during the power utilization time of a power user are acquired; account cancellation information and a meter reading frequency of the user are recorded, the actual power utilization month number is calculated according to the account cancellation information and the meter reading frequency, and a step electric quantity is further calculated; an annual step electric quantity and a step electric price of the user are determined; the cumulative power utilization quantity last month, power utilization quantity in the current month of the user and the annual step electric quantity by a step electric quantity charging unit are determined, the falling step for the electric quantity which needs to be charged to the user is determined; and according to the step for the electric quantity which needs to be charged to the user, the electric price of the step electric quantity charging unit is called, and the current electric fee in the current month by the user is calculated and displayed. By only acquiring the initial code and the stop code of the electric meter, which step period the current user is in can be known, the electric price of each step can be clearly known, how much electric quantity can be used for each step can be known, and the power utilization condition of the user can be mastered by the user.

System and method of charging step tariff applied to power user end

A method for counting electricity consumption includes obtaining a plurality of groups of electricity parameters. Each of the groups of electricity parameters includes a reading of a smart electricity meter and corresponding statuses of smart switches connected to the smart electricity meter. The method also includes determining an average power of at least one of the smart switches according to at least one of the plurality of groups of electricity parameters, determining a working period of the at least one of the smart switches within a set counting period, and determining an electricity consumption of the at least one of the smart switches in the counting period according to the working period and the average power of the at least one of the smart switches.

Method, apparatus, and system for counting electricity consumption

The invention discloses a power counting and charging method with a private protection function in an intelligent power grid to mainly solve the problem that in the prior art, a power grid is complex in maintenance and expenses are large due to the fact that users enable identities to be anonymous through anonyms The power counting and charging method includes the steps that a user registers for an intelligent electric meter in the position of a server provider, a trusted third party assigns a group for the intelligent electric meter before the intelligent electric meter has access to the power grid and sends a group message to the service provider, the intelligent electric meter signs a signature through a group private key when sending power consumption, the service provider counts all validated power consumption, the intelligent electric meter sends the power consumption to the service provider after conducting homomorphic encryption on the electricity fee and signing the signature in the charging stage, the service provider stores the electricity fee of the same user through the fact that the group signature can be related, the electricity fee is checked through the service provider and the intelligent electric meter, and arbitration can be conducted through the trusted third party if disputing exists The power counting and charging method has the advantages of being reliable in procedure, capable of protecting privacy and good in safety performance, and is suitable for power counting and charging in the intelligent power grid

Hu Yupu

Papers

Power counting and charging method with private protection function in intelligent power grid