Method and system for protecting electricity consumption privacy of smart grid users

Abstract

The invention discloses a method and a system for protecting electricity consumption privacy of smart grid users. The method comprises the following steps of establishing a consumption electric quantity mode set which can possibly disclose user privacy in a sampling period of an intelligent electric meter; acquiring time-sharing real electricity consumption in the current charging period; mixing the acquired time-sharing real electricity consumption through a preset mixing way by utilizing the consumption electric quantity mode set, and uploading the mixed electricity consumption after being mixed; correcting the real electric quantity of the last time-sharing in the current charging period to obtain the corrected electricity consumption so as to maintain the total electric charge of the current charging period constant; and uploading the corrected electricity consumption. Due to the adoption of the method and the system, the user behavior cannot be derived by attackers through the uploaded data, but the total electric charge of the user in the electricity consumption charging period is not changed, so that the electricity consumption privacy of the smart grid users can be protected.

Description

technical field [0001] The invention relates to a smart grid, in particular to a method and system for protecting privacy of smart grid users in electricity consumption. Background technique [0002] Smart meters need to be used in the smart grid to periodically upload electricity consumption data in real time, instead of the existing manual meter reading method every month. However, according to the analysis given by the American Institute of Standardization, the uploaded electricity consumption data may reveal the user's behavioral privacy, that is, the electricity consumption situation can reflect what electrical appliances the user is using, thereby inferring the user's daily behavior. [0003] The usual solution is to encrypt data, but frequent encryption will lead to high power consumption, which affects the use of smart meters and violates the original intention of smart grid implementation. [0004] The main disadvantages of the existing technology are: relying on c...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the frequent encryption operation of the uploaded data in the smart grid in the prior art leads to a large power consumption of the smart meter in the smart grid, which weakens the function of the smart grid and is not conducive to the promotion and implementation of the smart grid. Application defects, providing a method and system for protecting the privacy of smart grid users that do not rely on cryptography methods to protect user privacy, fast calculation speed, and low power consumption

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