Wind curtailment electric quantity evaluation model based on equivalent electric quantity function method

Abstract

The invention relates to the technical field of wind turbines, and concretely relates to a wind curtailment electric quantity evaluation model based on an equivalent electric quantity function method.The method comprises the following specific operation steps: carrying out probabilistic modeling on a demand side to form an equivalent cumulative load curve; performing refined probability modelingon the power supply side to obtain a cumulative probability function and a probability density function of the electric power of a thermoelectric unit; generating an equivalent continuous load curve of all power loads and an equivalent continuous load curve of thermal loads in the region in the research period; carrying out base load and peak load segmentation on non-heat-supply units, and arranging the non-heat-supply units according to a coal consumption rate ascending order; arranging a base load part of a non-heat-supply thermal power generating unit to participate in production; arranginga combined heat and power generation unit to participate in production; sorting the coal consumption and the electric heating ratio of each unit; arranging a non-heat-supply self-contained power plant unit to participate in on-load, and determining a total output probability distribution curve; arranging wind power to participate in production; and calculating the wind curtailment electric quantity. Accurate quantification of the wind curtailment electric quantity is achieved, and the accuracy of wind curtailment electric quantity calculation of the wind power plant is improved.

Description

technical field [0001] The invention relates to the technical field of wind turbines, in particular to an evaluation model of abandoned wind power based on an equivalent power function method. Background technique [0002] In recent years, due to the shortage of fossil energy and environmental pollution, new energy power generation such as wind and solar has attracted the attention and support of governments around the world. Driven by scientific and technological innovation and national policies, my country's large-scale wind power has been continuously connected to the grid, and the proportion of wind power in the grid has gradually become prominent, and it has become the main power source. However, due to the uncontrollability and indirectness of wind resources and the limitation of peak-shaving capacity of the power grid, the absorption capacity of wind power grid connection is limited, which leads to the occurrence of wind curtailment and power curtailment from time to ...

AI Technical Summary

Problems solved by technology

However, due to the fluctuation and randomness of wind power generation, as well as the influence of the geographical location and terrain distribution of wind farms, there is no specific selection standard for the selection of prototype machines in actual production, so that there are differences in the curtailed wind power calculated by different sample fan combinations. deviation, which reduces the statistical accuracy of wind power generation, makes it difficult to give precise guidance to actual production, and is not conducive to the maximum utilization of wind resources

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