Robust two-level optimization model and conversion equivalent method for real-time scheduling of wind power systems

Abstract

The invention discloses a wind power system real-time dispatching-containing robust two-layer optimization model and a conversion equivalent method, belongs to the field of real-time dispatching of power systems, and particularly aims to minimize a difference between an allowable fluctuation amount of wind power and a random fluctuation amount under a condition of ensuring that the operation cost of a power grid is within an expected range to meet a load and wind power uncertainty as much as possible. The robust two-layer optimization model comprises an upper-layer problem and a lower-layer problem, wherein upper-layer problem pays attention to the operation safety of a power grid after wind power is accessed, so as to minimize a difference between the allowable fluctuation amount of the wind power and an expected fluctuation amount; the lower-layer problem forms a decision problem aiming at minimizing the operation cost of the power grid. The upper-layer and lower-layer problems in the model have an obvious hierarchical relation and have a close relation; operation constraints of all types of power grids can be met; the robustness of a decision result can be guaranteed.

Description

technical field [0001] The invention includes a robust two-layer optimization model for real-time scheduling of wind power systems and a conversion equivalent method, which belongs to the field of real-time scheduling of electric power systems, in particular a method that can minimize the allowable fluctuation of wind power under the condition that the operating cost of the power grid is within the expected range The difference from the random fluctuation amount, so as to meet the load and wind power uncertainty as much as possible. Background technique [0002] Power system real-time dispatching is the link between advanced dispatching and automatic generation control (AGC). Its core is to determine the base point and participation factors of AGC units on the basis of forward-looking functions. This decision determines whether AGC can achieve the expected control effect. In traditional There are several well-established decision-making methods in power systems. The AGC uni...

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Problems solved by technology

However, this often increases the adjustment burden of the AGC unit, resulting in an increase in the operating cost of the grid

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