Combined decision method for power generation plans of multi-type power supply

Abstract

The invention discloses a combined decision method for power generation plans of a multi-type power supply. The multi-type power supply includes a power generation system composed of thermal power, wind power and hydropower. According to the combined decision method, an optimal start/stop state of a thermal generating set is selected according to requirement information of the power grid as well as a power balance analysis result; an optimization model coordinated with the multi-type power source is established, active output of wind power-thermal power-hydropower sets is optimized in a combined manner; and the safety of an active output plan of the multi-type power supply is checked, a start/stop plan of a thermal power set is corrected by iteration, and a combined power generation plan of the multi-type power supply is generated finally. According to the method, wind power prediction data is introduced into power balancing, start/stop of the thermal power set is arranged in advance, and a peak-clipping and valley-filling function of a hydropower set is used, so that a combined decision for a power generation plan for the thermal power, wind power and hydropower included power supply is realized, the generating amount of the thermal power set is replaced or reduced, and the clean energy consumption level of the power grid is improved.

Description

technical field [0001] The invention belongs to the technical field of electric power system scheduling automation, and in particular relates to a method for combining decision-making of multi-type power generation plans. Background technique [0002] With the grid-connected power generation of large-scale clean energy represented by wind power and photovoltaic power generation, the characteristics of clean energy such as volatility and anti-peak regulation make it difficult to adjust the frequency and peak regulation of the power grid, and the resulting problem of clean energy consumption has become a problem. Bottlenecks restricting the large-scale utilization of clean energy power generation in China. An important measure to solve this problem is to use energy storage equipment to store the electric energy during the wind power generation period and use it during the peak load period, so as to maximize the benefits of wind power. [0003] Pumped storage is currently the ...

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Problems solved by technology

Domestic power generation dispatching must not only implement the implementation of energy-saving power generation dispatching methods, ensure the priority dispatching of wind power, but also ensure the effective implementation of power contracts of power plants. The problem of unit combination in this environment has high computational complexity. Results are hard to quantify

The problem of multi-power combination includes the combination of thermal power units, the progress of electricity contract completion, the priority consumption of wind power, the coordinated operation of wind power-thermal power-pumped storage, and grid security. From a mathematical point of view, it is difficult to establish a unified optimization model to solve the problem of multi-power combination

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