Fast optimal decision of short-term dispatch of Three Gorges and Gezhouba cascade hydropower stations with navigation demand considered

Fast optimal decision of short-term dispatch of Three Gorges and Gezhouba cascade hydropower stations was developed with navigation and short-term electricity generation considered. Evaluation method of navigation condition and strategy of fast optimal decision of short-term dispatch were put forward with navigation guaranty rate, reservoir level guaranty rate and average reservoir level as decision indexes. Results show that multi feasible or best dispatch solutions of Three Gorges and Gezhouba cascade hydropower stations can be rapidly proposed by fast optimal decision strategy when schedule of Three Gorges hydropower station has been planned. And the best one not only satisfies navigation demand, but also increases daily electricity generation.