Multi-time-scale rolling coordination scheduling method for electric power system with wind power

Abstract

The invention discloses a multi-time-scale rolling coordination scheduling method for an electric power system with wind power. The method comprises the following steps of: calculating a thermal power unit overhauling plan and an annual electric quantity plan according to annual prediction and thermal power unit overhauling data, and working out an annual scheduling scheme in a rolling mode; discomposing the annual power generation quantity of a thermal power unit into weeks; calculating a thermal power unit starting and stopping plan and a weekly contribution plan according to weekly prediction data and the weekly power generation quantity of the thermal power unit; decomposing the weekly power generation quantity of the thermal power unit into days; calculating a daily contribution plan of the thermal power unit according to short-period prediction data and the daily power generation quantity of the thermal power unit, and working out a daily scheduling scheme in the rolling mode; calculating a thermal power unit contribution adjustment quantity according to ultrashort-period prediction data and the daily contribution plan of the thermal power unit, and executing a real-time scheduling scheme in the rolling mode; and correcting the annual scheduling scheme, the weekly scheduling scheme and the daily scheduling scheme in the rolling mode according to updated prediction data and an actual executing condition. By the method, uncertain influence caused by large-scale wind power network connection can be well handled.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and more specifically relates to a multi-time scale rolling coordinated scheduling method for a power system including wind power. Background technique [0002] With the depletion of fossil energy and the aggravation of environmental problems, the country's efforts in energy conservation and emission reduction have been continuously intensified, and renewable energy such as wind energy and solar energy has developed rapidly. However, due to the randomness, volatility and unpredictability of wind, the grid connection of large-scale wind power has brought serious challenges to power system dispatching. [0003] Power system dispatching is mainly divided into medium and long-term dispatching, day-ahead dispatching and real-time dispatching on the time scale. At present, research on independent scheduling problems for each time scale is relatively mature, but research on c...

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Problems solved by technology

[0004] The present invention provides a multi-time-scale rolling coordinated scheduling method for a power system containing wind power, aiming to solve the uncertain influence brought by the large-scale wind power connection that is difficult to overcome by the existing scheduling technology, and to ensure power generation on a longer time scale The plan can be executed smoothly in a short time scale, achieving the effect of global optimization

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