Research on transmission channel congestion management technology for cross-regional and cross-provincial trading of surplus new energy
Abstract
To address power flow congestion at critical transmission sections in the Central China Power Grid, this study analyzes the current situation, underlying causes, and mitigation strategies. By integrating regional grid-source-load coordination capabilities, the proportion of renewable energy in transmission corridors, and multi-level market operational characteristics, an integrated Central China electricity market model is developed. Leveraging a cross-provincial bundled trading mechanism involving diverse market participants and incorporating joint peak shaving, reserve, and frequency regulation market operations, the study derives grid security constraints under multi-resource coordinated transactions and proposes a joint optimization clearing model for cross-regional and inter-provincial markets. Additionally, it compiles transaction rules from four market categories to establish a rule repository and formulates congestion management standards for transmission corridors. This research provides theoretical and technical foundations for efficient utilization of cross-regional transmission corridors and standardized congestion management.