Power grid active real-time control method considering medium and long term transaction and spot transaction constraints

Abstract

The invention discloses a power grid active real-time control method considering medium and long term transaction and spot transaction constraints, and belongs to the technical field of electric powersystem operation and control. Aiming at the grid-connected active real-time control of a power plant in an electric power market environment with coexistence of medium and long term transactions andspot transactions, according to the method, a spot transaction electric quantity execution rate index is adjusted through introduction of a parameter less than 1 by regarding a ratio of the transaction electric quantity completion progress to the transaction time progress as a transaction electric quantity execution rate index, the grid-connected active adjusting speed and the adjustable space ofthe power plant, electric power balance, power transmission channel capability, and frequency modulation and peak regulation constraints are considered, a power grid active control optimization modelregarding a minimum grid-connected active sum of the power plant which regards a product of the medium and long term transaction electric quantity execution rate index and the spot transaction electric quantity execution rate index as the weight as the target is established, and power grid active control which simultaneously satisfies requirements of medium and long term transaction constraints and spot transaction constraints is realized.

Description

technical field [0001] The invention relates to the technical field of power system operation and control, in particular to a real-time active power control method for a power grid that takes into account the constraints of medium and long-term transactions and spot transactions. Background technique [0002] With the advancement of the electricity market, the proportion of medium and long-term transaction electricity with annual and monthly electricity assessment cycles is rapidly increasing. However, as the proportion of new energy installed capacity continues to increase, the capacity of flexible power plants is even more insufficient. Under the traditional dispatching plan mode that is completely arranged according to electric power, since the prediction accuracy of new energy power generation is still relatively low, only a small amount of output can be arranged for new energy in the planning stage, and the problems of wind and solar curtailment will become more and mor...

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Problems solved by technology

This patent does not consider how to satisfy both medium and long-term transaction constraints and spot transaction constraints in an electricity market environment where medium-to-long-term and spot transaction modes coexist

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