Real-time evaluation method and system for online power generation performance of wind turbine generator and medium

Abstract

The invention provides a real-time evaluation method and system for online power generation performance of a wind turbine generator and a medium. The method comprises the following steps: calculating instantaneous efficiency according to active power and corresponding standard power; the working conditions of the unit are divided according to the wind speed, the instantaneous efficiency is graded in each first working condition, and a power generation index is calculated according to a sliding window and multiple continuous instantaneous efficiency grades; dividing the working conditions of the wind turbine generator according to a pitch angle and a yaw error in the training set of the active power prediction model, training the corresponding active power prediction model for each second working condition, and calculating the power generation potential of the wind turbine generator according to the actual value and the predicted value of the active power; and evaluating the power generation performance of the unit according to the instantaneous efficiency, the power generation index and the power generation potential. According to the method, the actual operation condition of the unit is considered, and the power generation performance of the wind turbine generator is comprehensively and accurately evaluated according to the active power grading model and the power generation index and the power generation potential based on the active power.

Description

technical field [0001] The present application relates to the technical field of wind power generation, and in particular to a method, system and medium for real-time evaluation of online power generation performance of wind turbines. Background technique [0002] As the proportion of wind power in my country's power energy structure continues to increase, how to effectively improve the power generation capacity of wind turbines is the key to the long-term healthy development of wind energy. Among them, the power generation performance of the wind turbine unit shows the current wind energy conversion capability of the unit. As an important indicator of the operation of the wind turbine unit, it helps to clarify the power generation potential of the unit and increase the power generation capacity of the unit, and correctly understand the gap between the excellent level of power generation capacity. [0003] In related technologies for researching power generation performance,...

AI Technical Summary

Problems solved by technology

However, the change of the actual power curve is slow, and a large number of similar points need to be continuously strengthened to change the existing trend

Since the active power online data is generally scattered on both sides of the actual power curve, it is difficult to judge the online power generation performance of the unit based on the actual power curve

[0004] In summary, the above-mentioned methods for evaluating the power generation performance of wind turbines, whether it is the evaluation method of power generation or the actual operating power curve, cannot well meet the needs of online evaluation of the operation of wind turbines. Under the actual situation of the unit operation, the power generation performance scheme of the unit can be accurately evaluated

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