Abstract
Smart grids are electrical grids that take advantage of information and communication technologies to achieve energy-efficiency, automation and reliability. Smart grids include renewable energy, electrical vehicles, phasor measurement unit (PMU) and advanced metering infrastructure system (AMI) etc. The system's availability can be achieved via data aggregation technique by reducing the overhead of networks. However, since smart grids have become more popular in recent years, many researches have been done on the security issue of the smart grid such as confidentiality, integrity and availability. For these security issues, many researchers adopt secure data aggregation algorithms to protect the data transmission and to reduce the overhead of networks. In this paper, we propose a secure data aggregation framework, which provides multi-level security for different kinds of applications. c Springer Science+Business Media Dordrecht 2014.