Abstract:

With extensive smart grid construction,and the resulting threats to further increase the importance of information security has become increasingly prominent.The paper focused on the main features of the smart grid,security requirements,active and passive defense techniques are analyzed and presented the overall structure and processes of smart grid information security system.Thus demonstrates the utilization of active and passive defense technology,can effectively protect against network attacks,to ensure a strong and stable power grid.

Key words: smart grid;information security;active defense;passive defense