A privacy-protected regional user power aggregation system and method in a smart grid

Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of Distributed Energy Resources (DER) of smart grid and the technical field of user smart meter data privacy protection, and relates to a privacy-protected regional user power aggregation and control system and method in smart grid, in particular to a smart grid Based on the characteristics of the power grid field, the need for user data privacy protection, and the need for flexible monitoring of user power, a regional user power aggregation system and method with privacy protection is developed by combining homomorphic encryption algorithm and batch verification technology. Background technique [0002] Smart Grid (Smart Grid) is attracting more and more attention as the next-generation power grid. It is a new power grid system that integrates modern information systems into traditional energy networks, so that the power grid has better controllability and observability, and solves traditional problems. Low...

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Problems solved by technology

[0005] However, the existing research work on privacy-protected data aggregation methods based on homomorphic encryption algorithms is generally based on the system model of a first-level gateway (that is, there is only one gateway between the regional users and the control center in the model), and the gateway corresponds to It is a user home network in a community. Based on this model, the system can only realize the aggregation of users’ electricity in one community. The aggregation granularity is single, and the electricity regulation is not flexible enough.

In terms of user power verification, some existing research works use the gateway to verify each received user power separately, which is obviously not efficient; some existing research work proposes a batch verification method in order to improve efficiency. Among the proposed verification methods, some cannot resist counterfeiting, while others can achieve anti-counterfeiting but the efficiency of improvement is not obvious

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