Large wind power generation cluster wind curtailment electric quantity evaluation method based on space truss structure clustering

Abstract

The invention discloses a large wind power generation cluster wind curtailment electric quantity evaluation method based on space truss structure clustering. The large wind power generation cluster wind curtailment power quantity evaluation method comprises the following steps: finding a bottleneck value of a power grid outgoing circuit, and selecting Benchmarking wind power plants corresponding to the power grid outgoing circuit; calculating the booting volume and the theory output of each Benchmarking wind power plant in the corresponding Benchmarking wind power plants; calculating the real-time booting volume of each wind power cluster in every t minutes, and calculating the theory output of the wind power cluster in every t minutes; judging whether the theory output of each cluster is greater than practical output or not; and judging whether statistics end time is up or not, and carrying on statistics on the wind curtailment electric quantities of all clusters in all time periods. A purpose that the wind curtailment electric quantity can be accurately, reliably and quickly calculated and analyzed on line is achieved.

Description

technical field [0001] The invention relates to the field of wind power generation abandoned wind power evaluation field, in particular to a method for evaluating the abandoned wind power power of large-scale wind power generation clusters based on grid structure grouping. Background technique [0002] Abandoned wind power of wind power plants refers to the amount of electricity that can be generated by wind farms but cannot be generated due to factors such as grid transmission channel restrictions, grid peak regulation needs, grid safety and stability operation needs, and grid equipment maintenance and failures. [0003] Abandoning wind is a common phenomenon in the process of large-scale development of wind power generation, which is similar to abandoning water in the process of hydropower generation. Large-scale wind power bases cover a wide area and generally include multiple wind farms or groups of wind farms. Factors such as grid transmission channel transmission limit...

AI Technical Summary

Problems solved by technology

However, for 10-million-kilowatt-scale wind power bases, the simultaneous rate of actual output of each wind farm is generally low, so calculations using this method will generally result in inaccurate calculations of abandoned wind power

[0005] Previously, the patent 201410360595.1 proposed a theoretical power calculation method for wind farms based on the wind speed method at the nose of the wind farm. The problem with this technology is that the wind speed monitored by the wind speed meter at the head of the wind turbine will be affected by the wind turbine blades, so the theoretical output evaluated by this method is generally with large error

[0006] Patent 201410362935.4 proposes a method for calculating the theoretical power of wind farms based on wind tower data extrapolation method. The disadvantage of this method is that first, many wind farms are not covered by wind towers, which makes the method invalid; second, there are wind towers covered For wind farms, wind tower sensors are required to be calibrated once a year and replaced every two years. Few sensors on wind towers can be calibrated and replaced on schedule, and the accuracy is difficult to guarantee. Third, when extrapolating wind data due to The wind speed is affected by factors such as eddy currents and turbulence, and the extrapolation accuracy is difficult to guarantee

[0007] Patent 201410705243.5 proposes a method for determining the theoretical power of wind farms considering the influence of wind direction. The disadvantage of this method is that it requires the accumulation of a large amount of wind speed, wind direction and power data. During the period of rapid development of wind power, the accumulation of such data is often seriously insufficient. Therefore, the The method has great limitations

[0008] The patent (201410360594.7) proposes a method for calculating the theoretical power of wind farms based on the model wind turbine method. The main disadvantage is that some power stations do not have fixed benchmark wind turbines, or the operation management of benchmark wind turbines is not standardized enough, there are faults, and the data upload of benchmark wind turbines is interrupted or Errors and other problems, the method proposed by the present invention will serve as an effective supplement to the statistical method of abandoned wind power based on benchmark wind turbines

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