Rolling adjustment method of power generation plan based on pre-bidding deviation electricity balance mechanism

Abstract

The invention belongs to the technical field of electric power systems, and in particular relates to a rolling adjustment method of power generation plan based on a pre-bidding deviation power balance mechanism, which includes: the bidding adopts the electricity selling quotation for increasing the unit power generation amount and the electricity buying price quotation for reducing the unit power generation amount; When the actual electricity demand of the month exceeds the contracted electricity quantity, priority will be given to the units with low quotations for electricity sales to increase the power generation, otherwise, the units with high quotations for electricity purchases will be given priority to reduce the power generation; To complete the progress, the pre-decomposition of the next day's electricity is carried out according to the principle that the completion rate of the monthly power generation plan of each unit is consistent, and then the pre-decomposition of power is carried out according to the principle that the shape of the power generation curve of each unit is consistent with the shape of the system load curve, and the day-ahead power generation plan is obtained through the optimization model ; When the actual load demand is greater than the previous power generation plan, the output will be increased, otherwise, the output will be reduced; finally, the settlement will be made according to the electricity selling price and electricity buying price in the pre-bidding.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to a rolling adjustment method for power generation plans based on a pre-bidding deviation electricity balance mechanism. Background technique [0002] According to the operation practice of foreign mature power markets, although there are obvious differences in the market model and the design of specific trading mechanisms, they all improve the operating efficiency of the power market through the mutual cooperation of medium and long-term transactions and spot transactions. Among them, medium and long-term transactions are mainly used to avoid the risk of price fluctuations in the spot market, while spot transactions are closer to the actual operation of the power grid and reflect real-time or near-real-time power supply and demand conditions, discover more real and effective price signals, and then guide medium and long-term contracts Sign, and guide power invest...

AI Technical Summary

Problems solved by technology

[0005] Under the above-mentioned deviation rolling adjustment method, when the power dispatching agency adjusts the monthly power generation plan of the power generation company, it can weaken the constraint on the contracted power of the current month, and roll the deviation power to subsequent months for processing, so it has high scheduling flexibility; but for As far as market players are concerned, if there is a large deviation between the adjusted monthly power generation plan and its monthly contract power, it will affect its normal production plan and arrangement, and cause changes in production costs and power generation revenue. There is a fairness in the progress of contract execution among market players. sexual problems

Especially with the continuous expansion of the market power scale, the base power that can be used for rolling adjustments will be insufficient. In some provinces with a relatively high proportion of market power, some power generation companies have already completed their contracted power too quickly, and some power companies have completed their contracted power. The progress is slow. Restricted by various operational constraints at the end of the year, the power dispatching agency cannot guarantee the balance and consistency of the annual completion rate of the base electricity among power generation companies.

[0006] In short, although the traditional rolling adjustment deviation model has given more flexibility to the power dispatching organization, it has weakened the constraints of the contract power, which is not conducive to the fair competition of market players, and cannot measure the cost of deviation adjustment. Deviation power balance mechanism and corresponding rolling adjustment method of power generation plan to meet the needs of power market development

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