Two-objective random economic dispatching method for accessing small hydropower station to power grid

Abstract

The invention discloses a two-objective random economic dispatching method for accessing a small hydropower station to a power grid. The two-objective random economic dispatching method comprises the following steps: 1) obtaining calculating parameters: obtaining calculating parameters from a power system containing a radial-flow type small hydropower station; 2) establishing a two-objective random economic dispatching model: establishing a random dynamic economic dispatching model which takes power purchasing cost and smallest emission load of polluted gas as objectives; 3) resolving the two-objective random economic dispatching model: adopting scene decoupling and asynchronous iteration to improve an interior point method to resolve two-objective random economic dispatching model; and 4) obtaining an economic dispatching scheme: obtaining the economic dispatching scheme through improved pareto frontal analysis based on compromising optimal solution. The two-objective random economic dispatching method solves the radial-flow type small hydropower station random optimizing problem, and improves a random power supply predicating accurate rate greatly.

Description

technical field [0001] The invention relates to a two-objective random economic scheduling method for connecting small hydropower groups to a power grid, and belongs to the technical field of power system operation and maintenance. Background technique [0002] In recent years, with the increasingly serious problems of environmental pollution and energy depletion, the utilization of clean and renewable energy has attracted more and more attention from all over the world. my country's efforts to develop and utilize renewable energy and optimize the energy structure are also increasing. At present, the use of wind power, photovoltaic technologies have matured. Hydropower is a high-quality renewable energy. Like wind power, it is also a clean energy that can be used sustainably. my country's small hydropower construction has achieved great results, especially in the western mountainous areas where small hydropower is clustered. [0003] With the transformation of traditional...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention proposes a two-objective stochastic economic scheduling method for connecting small hydropower groups to the power grid, which solves the random economic scheduling problem of small hydropower groups connecting to the power grid in view of the diversification of the optimal scheduling objectives of the power grid

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