Decomposition Model Framework of Trading Volume of Cascade Hydropower Stations Under the Linking Mode of Medium-Long Term and Spot Market

摘要

The electricity market reform of China is in the transitional stage from medium and long-term market to spot market. At present, most provinces still focus on medium and long-term electricity trading. A few provinces, such as Guangdong, have begun to simulate spot market operation. At the present stage, how to link up the medium and long-term market with the spot market is a key technical problem to be solved urgently. Aiming at the decomposition and execution of medium and long-term transaction power of cascade hydropower stations, this paper proposes a model framework of transaction power decomposition under the mode of linking medium and long-term with spot market. In the first place, this paper presents two monthly trading power decomposition models according to different seasons. Then a daily generation planning method based on standard load curve is proposed to decompose the daily power. Finally, the proposed method is applied to a provincial power grid. The results show that the proposed method provides some ideas for the rational curve decomposition of transaction power.