Operational Planning to Enhance Bhutan Power Grid Resilience Against Cascading Failures in Interconnected Systems

This research addresses the imminent challenges faced by the Bhutan power grid due to cascading failures in interconnected systems. An Intentional Controlled Islanding (ICI) scheme is introduced as a last-resort corrective action to prevent potential blackouts. The study thoroughly explores three pivotal aspects for appropriate islanding solutions: the appropriate time (When), boundary (Where), and execution method (How). The methodology strategically separates the system into a sustainable island based on dynamic performance analysis deriving from expected real-time measurement information gathered from Phasor Measurement Units (PMUs). An application of this ICI methodology is demonstrated using the real-life Bhutan power grid modeled in PowerWorld Simulator.