Mapping of Sakhalin Power Grid Vulnerability Based on Network Analysis

The vulnerability assessment methodology proposed for substations focuses on enhancing the conventional SVI index by incorporating a synthesized indicator to evaluate predisposition to high vulnerability in power transmission lines. This indicator amalgamates criteria such as operational time, transmission capacity, and line length, assigning weights based on their relative importance. Utilizing the Analytic Hierarchy Process (AHP), weight coefficients for each criterion are calculated to derive the overall vulnerability of power system elements. The assessment involves calculating SVI indicators for substations based on weighted shortest distances from energy sources, considering alternative energy supply routes. Additionally, the methodology evaluates the load on power lines using centrality measures, reflecting the lines’ importance in transmitting electrical energy. Through simulation, cascading failures are modeled, highlighting critical points of failure and their impact on the power system. The results demonstrate the vulnerability of substations and power lines, particularly in coastal and central regions, emphasizing the need for network expansion and backup power supply routes to enhance system resilience. Zoning analysis identifies regions at risk of power outages, underscoring the importance of strategic planning and infrastructure development for ensuring reliable energy supply in the Sakhalin region. #CSOC1120.