Assessing the feasibility of methods to enhance the security of supply of critical infrastructure

This paper presents a methodology to assess the feasibility of different methods to ensure the security of electricity supply of critical infrastructure. The methodology consists of two alternatives to secure the supply of electricity: 1) by renovation of the present electricity distribution system with a stormproof network technology, such as underground cables; and 2) by using a local battery energy storage when the main supply is interrupted. The methodology is tested with actual case area network data from Finnish rural areas. The data are gathered from four distribution system operators.