Dynamic Stress Assessment of Transmission Corridors Based on Synchrophasors

This paper presents a novel method for dynamic stress assessment of transmission corridors using synchrophasor measurements. By continuously monitoring the voltage angle difference between PMU-equipped nodes, the proposed approach identifies conditions where the angle exceeds typical synchrocheck relay thresholds—posing risks for post-contingency reclosure. Such violations, often overlooked in conventional N-1 analyses, can result in blocked breaker reclosing and degraded system stability. The method enhances situational awareness by correlating real-time angle deviations with protection constraints, enabling predictive detection of reclosure failure scenarios. The framework supports integration with Wide Area Monitoring Systems (WAMS) to improve operational resilience, adaptive control, and dynamic security assessment.