Abstract

The grid connection of renewable energy leads to the increase of uncertainty in daily operation scenarios. The traditional deterministic daily start-up planning method is difficult to adapt, which is easy to cause problems such as poor economy and high abandonment rate of planning schemes. Therefore, this paper proposes a fire-storage joint planning method to deal with the uncertainty of renewable energy. Firstly, the operation effect of daily start-up plan in uncertain renewable energy scenarios is analyzed, and the impact of different start-up plans on supply and demand balance and economy in uncertain scenarios is quantitatively analyzed. Then, by evaluating the flexibility of a typical day with a variety of renewable energy output, a method for determining the daily start-up plan based on the entropy weight method is proposed. The effect of the daily start-up plan on dealing with multiple uncertain scenarios is scored by each flexibility index, so as to obtain a better start-up plan to deal with uncertainty. Finally, based on the daily start-up plan formulation method based on entropy weight method, a fire-storage joint planning model with the minimum expected cost of each scenario is constructed to realize the joint planning of thermal power and energy storage.