The invention discloses a method and
system for medium-and-long-term power transaction curve
decomposition. The method comprises the following steps: S1, acquiring power
consumer data, power medium and long term transaction contract data and a spot market predicted price curve; S2, according to the power
consumer data, establishing a load prediction curve of the power seller in combination with the electric quantity in the power medium-and-long-term transaction contract data; S3, establishing a comprehensive price curve of medium-and-long-term power transaction according to the medium-and-long-term power transaction contract data; S4, establishing an
electric power medium and long term transaction curve
decomposition model according to the spot
market prediction price curve, the load prediction curve of the
electricity seller and the comprehensive price curve of the
electric power medium and long term transaction; and S5, obtaining an optimized power seller load
decomposition curve according to the power medium-and-long-term transaction curve decomposition model. The load decomposition curve of the
electricity seller obtained by using the medium-and-long-term
electric power transaction curve decomposition method can increase the income of an
electricity selling company in the electric power transaction.