摘要
The government-owned Taiwan Power Company (Taipower) manages transmission systems spanning 345, 161, and 69kV across Taiwan. Amidst construction projects and retiring power units, the grid faces strain. Taipower conducts rolling reviews to integrate renewable energy sources and mitigate constraints. Challenges in constructing new extra high voltage (EHV) lines limit power transfer. Disruption in dual-circuit transmission lines during N-2 contingencies could lead to system-wide instability. This study analyzes the generator rejection scheme (GRS) and multi-phase automatic reclosing (MPAR) for mitigation. A reliability-based GRS with redundancy will be explored. MPAR maintains system stability by keeping two healthy phases during disturbances. Precise fault phase detection and communication among relays are crucial. Simulation studies using PSS@E will validate effectiveness. Implementation insights within Taipower will be provided.