期刊
IET SMART GRID
卷 3, 期 5, 页码 596-604出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-stg.2020.0055
关键词
energy management systems; smart power grids; smart meters; data privacy; power consumption; optimisation; power system measurement; privacy-cost trade-off; smart electricity metering systems; smart grid consumer; electricity consumption; smart meter readings; electrical battery; energy cost; target load profile; privacy-preserving energy management policies; privacy indicators; utility provider; demand shaping; mean squared distance; time-of-use pricing
资金
- Engineering and Physical Sciences Research Council (EPSRC) of the UK [1507704]
- U.S. National Science Foundation [ECCS-1824710]
Trade-offs between privacy and cost are studied for a smart grid consumer, whose electricity consumption is monitored in almost real time by the utility provider (UP) through smart meter (SM) readings. It is assumed that an electrical battery is available to the consumer, which can be utilised both to achieve privacy and to reduce the energy cost by demand shaping. Privacy is measured via the mean squared distance between the SM readings and a target load profile, while time-of-use pricing is considered to compute the cost incurred. The consumer can also sell electricity back to the UP to further improve the privacy-cost trade-off. Two privacy-preserving energy management policies (EMPs) are proposed, which differ in the way the target load profile is characterised. A more practical EMP, which optimises the energy management less frequently, is also considered. Numerical results are presented to compare the privacy-cost trade-off of these EMPs, considering various privacy indicators.
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