Optimization Model for Short-Term Power Balancing in Clean Energy Bases

In the future, largescale transmission of renewable energy from clean energy bases in China will face growing challenges caused by deviations between actual generation and the contracted power in medium- and long-term agreements. To improve consumption efficiency and control regulation costs, it is essential to establish an effective balancing mechanism. In this context, this study proposes a deviation-balancing pathway based on the principle of “internal short-term market priority.” A short-term power balance optimization model is developed for clean energy bases to coordinate the dispatch of hydropower, photovoltaic, and wind resources for pre-liminary deviation balancing, followed by a secondary balancing process to achieve overall cost optimization. The results show that during the wet season, the internal resources of the base can fully meet the load deficit, while during the dry season, load deficits remain after internal balancing. This approach significantly enhances the capability and economic efficiency of renewable energy deviation balancing in large-scale power transmission.