Method and system for activating potential flexibility of power system

Abstract

The invention discloses a method and a system for activating potential flexibility of a power system, and belongs to the field of electrical engineering. The method comprises the steps of establishing a continuous time scheduling model of a power system; fitting a power curve of the power system load and the new energy output by adopting Bernstein polynomial interpolation to obtain a Bezier power curve; transforming the continuous time scheduling model from a function space to a Bernstein polynomial interpolation coefficient space based on an enhancement matrix constructed by a Derkstrom algorithm to obtain an interpolation coefficient space optimization model; solving the interpolation coefficient space optimization model in the Bernstein polynomial interpolation coefficient space; and restoring an interpolation coefficient space optimization result to a function space to obtain an optimal continuous time scheduling plan. According to the method, an enhanced solution space transformation method is established, feasible region reduction in the power system continuous time scheduling problem solving process is reduced, and a basis is provided for activating potential flexibility.

Description

technical field [0001] The invention belongs to the field of electrical engineering, and more particularly relates to a method and system for activating potential flexibility of a power system. Background technique [0002] With the frequent occurrence of extreme climate events and the depletion of fossil energy, clean and pollution-free renewable energy has been developed rapidly. However, due to its volatility and intermittency, a large number of renewable energy sources are connected to the power system, which makes the load fluctuation of the power system more and more severe. Therefore, it is of great significance to explore new flexibility resources and make full use of the flexibility potential of existing resources to cope with power system load fluctuations. [0003] A large number of studies discuss how to improve the flexibility of the power system, which can be mainly divided into two aspects. First, develop new flexible resources in the power system, such as t...

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Problems solved by technology

[0005] Aiming at the deficiencies and improvement needs of the power system operation safety and economy that may be caused by the inability to fully utilize the flexibility of the power system in the prior art, the present invention provides a method and system for activating the potential flexibility of the power system, the purpose of which is to establish Enhanced solution space transformation method to reduce feasible region reduction in the solution process of continuous time scheduling problems in power systems, providing a basis for activating potential flexibility

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