| Title |
A Methodology on Assessment of Cybersecurity Risk in Large-Scale Smart Grids |
| Authors |
우필성(Pil Sung Woo) ; 김발호(Balho H. Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2022.71.3.477 |
| Keywords |
Smart Grid; Cybersecurity; NERC CIP; SGSF-121-1-1; Opimal Power Flow; Contingency Analysis; Balanced Power Supply and Demand |
| Abstract |
A smart grid (SG) is a new paradigm in power systems, which is a high value-added platform through real-time information sharing.
However, SGs are exposed to cyber-attacks because of the structural characteristics. In a power system in which a real-time balance of supply and demand is essential, cyber-attacks directly lead to a power outage and cause a complex disaster leading to a secondary subordinate accident simultaneously. In this paper, the concept of cybersecurity risk is defined considering the structural characteristics of Large-Scale SGs and its evaluation method is proposed based on NERC CIP. The evaluation method quantifies the risk of information security by applying the related standards (SGSF-121-1-1) and analyzes the optimal power flow calculation, state of balanced power supply and demand and frequency stability to evaluate the robustness of large-scale intelligent power systems.
This study may contribute toward finding the basis for optimal decision-making when establishing a cybersecurity contingency plan |