Pre-bidding deviation power balance mechanism-based power generation plan rolling adjustment method

Abstract

The invention belongs to the technical field of power systems and particularly relates to a pre-bidding deviation power balance mechanism-based power generation plan rolling adjustment method. The method comprises steps: a power sale quotation with increase of a unit generation capacity and a power buying quotation with reduction of a unit generation capacity are adopted for bidding; if the actualpower demand in the current month is predicted to exceed contract power, a unit with a low power sale quotation is firstly arranged to increase the power generation, or otherwise, a unit with a highpower buying quotation is firstly arranged to reduce the power generation; according to a next-day load prediction condition and the actual completion schedule of the monthly contract power of each unit, predecomposition of the next-day power is carried out according to a principle of the monthly power generation plan completion rate of each unit to be consistent, predecomposition of power is carried out according to a principle of the power generation curve shape of each unit and the system load curve shape to be consistent, and the day-ahead power generation plan is obtained through an optical model; when the actual load demand is larger than the day-ahead power generation plan, output is increased, or otherwise, output is reduced; and finally, settlement is carried out according to thepower sale quotation and the power buying quotation 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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