Trans-Regional Dispatch of Large-Scale Wind and Solar Power Generation Base

To address the renewable energy curtailment of large-scale wind and solar power generation bases (WS-PGB) in Northwest China, this study proposes a trans-regional dispatch scheme for large-scale WS-PGB, considering the flexibility of concentrated solar power (CSP) plants and ultra-high voltage direct current (UHVDC) tie-lines. Firstly, operation models for typical flexible components, represented by CSP plants and UHVDC tie-lines in large-scale WS-PGB, are established. Secondly, a coordinated trans-regional dispatch scheme is developed to coordinate the flexible regulation capabilities of source-side CSP plants and grid-side UHVDC tie-line, which successfully raises energy utilization efficiency, reduces system operation cost, and promotes renewable energy assumption of large-scale WS-PGB. Finally, case studies based on the 2030 planning data of a large-scale WS-PGB in Northwest China validate the effectiveness of the proposed trans-regional dispatch schemes.