Intra-day Tie-line Scheduling Model Considering New Energy Fluctuation

Fluctuations of new energy output cannot be effectively accommodated in the traditional cross-regional or cross-provincial tie-line scheduling since it’s established mainly based on power transactions, therefore, it is less involved in the intra-day adjustments. The Intra-day Tie-line Scheduling Model Considering New Energy Volatility is presented in this paper in response to this situation. In the Model, a intra-day scheduling model is established based on the cross-section of the tie-line and the sub-provincial reserve control after the treatment of their equivalent forms against fuzzy opportunity constraints of the spinning reserve according to credibility distribution function of the error in the new energy prediction. The result after applying the Model to the actual example indicates that the Model is useful to optimize the reasonable intra-day tie-line scheduling when the reserve is insufficient, and thus enhance the mutual-accommodation capacity of interconnected power grids to effectively improve the accommodation level of new energy.