Online optimization method and system for optimal gain parameter of wind generating set

Abstract

The invention discloses an online optimization method and system for the optimal gain parameter of a wind generating set. The online optimization method comprises the steps that the optimization rangeand the optimization step length for the optimal gain parameter are determined; the performance indexes of all parameters within the optimization range for the optimal gain parameter are calculated through an exhaustion method, and an optimal gain parameter value corresponding to the maximum performance index is found out by comparing the values of the performance indexes and is used as the optimal gain parameter value of the current cycle; a list circulation counting value and an optimizing threshold are determined, and an optimizing list is circulated to obtain the optimal gain parameters of multiple cycles; and whether or not an optimization ending condition is met is judged, the steps are repeated if not, and the final gain parameter of the wind generating set is obtained if yes. By adoption of the online optimization method and system for the optimal gain parameter of the wind generating set, the accuracy of the optimal gain parameter of the wind generating unit is improved whilethe hardware cost is not increased, the rotating speed and torque curve of the wind generating unit is optimized, and the generating capacity of the wind generating set is improved.

Description

technical field [0001] The invention relates to an online optimization method and system for optimal gain parameters of a wind power generating set. Background technique [0002] Wind power is a method of generating electricity that converts wind energy into electricity. In recent years, with the increasing proportion of wind power in the power grid, the requirements for the performance of wind turbines are also increasing, especially how to increase the power generation of the turbines at low wind speeds. The optimal speed control technology is often used before the fan power is fully generated. This area is also called the maximum energy tracking area. When the unit is running in this area, the generator torque is equal to the product of the square of the generator speed and the optimal gain. The optimal gain value is related to multiple factors such as the radius of the turbine rotor, the optimal tip speed ratio, the wind energy utilization coefficient, and the air densi...

AI Technical Summary

Problems solved by technology

Since the air density is greatly affected by factors such as temperature and air pressure, the optimal gain value obtained by using a fixed air density value is often quite different from the actual value. Accuracy, but with corresponding procurement, installation and maintenance costs

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