Power Transmission Planning System for Stability Control

The system performs preliminary stability assessment by calculating stability margins for each bus line before determining the output of natural variation power supplies. This preliminary action identifies bus lines with insufficient stability margins, and the output of natural variation power supplies is controlled to prevent further degradation of voltage and synchronization stability on these critical bus lines.

The system applies different output control strategies to different natural variation power supplies based on their locations. Natural variation power supplies connected to bus lines with sufficient stability margins can operate at higher outputs, while those connected to bus lines with insufficient stability margins are restricted. This local differentiation allows maximum overall power supply while maintaining stability where needed.

The system establishes a feedback loop where facility expansion plans are evaluated based on their impact on output control quantities of natural variation power supplies. The stability assessment results and calculated output control quantities feed into the facility expansion planning process, allowing the system to identify expansions that would most effectively reduce output controls and improve overall system reliability.

The system changes the evaluation parameters for facility expansion from traditional metrics to include output control quantities of natural variation power supplies. By incorporating this new parameter, the system can quantitatively assess how different facility expansion options affect the ability to utilize natural variation power supplies, leading to more effective expansion planning.