A smooth output method for wind farm group and thermal power plant combined power generation system

Abstract

The present invention provides a smooth output method for a combined power generation system of a wind farm group and a thermal power plant, comprising the steps of: acquiring a data set consisting of a wind power generation power predicted value of each wind farm in the wind farm group, and adding all the wind power generation power predicted values in the data sets corresponding to the all wind farms to obtain a comprehensive data set consisting of total power generation power of the wind farm group; fitting the comprehensive data set through a polynomial fitting algorithm to obtain a wind power smooth output formula, and calculating a wind power smooth output value; calculating the sum of the wind power smooth output value and a standard output value of the thermal power plant, so as to obtain a total smooth output value; and determining the actual output conditions of the wind farm group and the thermal power plant according to the total smooth output value, the total power generation power of the wind farm group, and the minimum output value, the maximum output value and the standard output value of the thermal power plant. According to the smooth output method of the present invention, the obtained smooth output curve does not delay, and low energy consumption, little pollution, and stable electric energy output can be ensured.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for smoothing output of a combined power generation system of a wind farm group and a thermal power plant. Background technique [0002] Thermal power generation is currently the most important and most technologically mature power generation method. Currently, thermal power generation still occupies a very large proportion in my country's power generation field, but thermal power generation has disadvantages such as high energy consumption and serious pollution. [0003] In recent years, renewable clean energy such as wind energy has been increasingly used in the field of power generation. The combined power generation system of wind farms and thermal power plants is a power generation system that integrates wind power and thermal power. Increase the proportion of wind power supply when resources are sufficient, give full play to the advantages of low energy con...

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Problems solved by technology

[0009] The main purpose of the embodiment of the present invention is to provide a method for smoothing the output of the combined power generation system of the wind farm group and the thermal power plant, so as to solve the delay in the output smooth curve obtained by using the first-order low-pass filter algorithm to smooth the wind power fluctuation in the prior art. temporal phenomenon

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