A wind farm fleet division method

Abstract

The invention belongs to the field of simulation of electric power systems, and particularly relates to a cluster classification for a wind power plant. Clusters are classified in a unit of the wind power plant according to the actually measured operating data of the wind power plant. In the process of acquiring the data, the actually measured data probably contain noise data because of the factors like the defect or the execution error of a measurement system. In order to reduce the interference of the noise data, the isolated point data in the actually measured operating data of the wind power plant are firstly processed according to the potential value of a sample point. When the central initial positions of the two clusters are nearer during the cluster classification, more redundant information is contained, and the classification result easily becomes the locally best. Aiming at the problem, a sample group with the smallest Euclidean distance moves towards the mean value point, the mean value of the moved sample group replaces the original sample group, so that the method acquires the central position of the diversified initial clusters, and the global searching ability is improved. By the adoption of the cluster classification for the wind power plant, provided by the invention, wind turbine generators having the near operating points are classified in the same cluster, and the equivalent modeling approach for the wind power plant is optimized.

Description

technical field [0001] The invention belongs to the field of power system simulation, and in particular relates to a method for dividing a wind farm machine group. Background technique [0002] In recent years, with the further aggravation of fossil energy crisis, environmental pollution and greenhouse effect, people pay more and more attention to low-cost, pollution-free and renewable wind power generation. Wind power has become the most widely used and developed The fastest and most technologically mature form of renewable energy generation. With the development of wind power generation and grid-connected technology, the negative impact of wind farms on the grid is becoming more and more obvious. In order to analyze the impact of wind power grid-connected on the system, it is necessary to establish an accurate and reasonable wind farm model. [0003] The traditional single-machine equivalent model assumes that the wind speed distribution in the field is uniform, and the o...

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Problems solved by technology

[0006] The object of the present invention is to propose a method for dividing wind farm fleets in view of the low quality of current wind farm fleet division, which is characterized in that the method includes the following steps:

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