Wind farm power distribution method, system, computer equipment and storage medium for coordinating the frequency regulation capability of wind turbines

Abstract

The invention discloses a wind farm power distribution method, system, computer equipment and storage medium for coordinating the frequency modulation capability of wind turbines, and belongs to the field of wind farm optimization dispatching. The present invention aims at the problem that some units are out of operation due to improper distribution of power commands when the wind farm participates in the frequency regulation process. On the basis of the traditional allocation strategy, combined with the releasable kinetic energy of the wind turbines in different wind speed ranges, the distribution weighting coefficient is calculated. Optimization; at the same time, through the real-time collection of the speed of each wind turbine, the wind turbines whose speed is lower than the stable operation limit actively withdraw from frequency regulation, and the resulting frequency regulation power deficit is shared by other normal operating wind turbines. The present invention can fully consider the difference in frequency regulation capabilities among different generating units during the distribution process, so that the wind farm can ensure the stable operation of each wind generating set in the farm while meeting the dispatching requirements of the power grid.

Description

Wind farm power distribution method, system and computer for coordinating the frequency regulation capability of wind turbines Devices and Storage Media technical field The present invention belongs to the field of wind farm optimization dispatch, particularly a kind of wind farm that coordinates the frequency regulation capability of wind turbines Power distribution method, system, computer device and storage medium. Background technique Due to the strong randomness and volatility of wind power, the impact of large-scale wind power access on the stable operation of the power system [1]. The sound is becoming increasingly prominent. The decoupling of wind turbine speed and grid frequency reduces the total inertia of the system and reduces the frequency regulation capability. for Therefore, it is necessary to require wind power to have the ability to adjust active power to relieve the pressure of frequency regulation of the power system. Due to the single capacity ...

AI Technical Summary

Problems solved by technology

However, in the short time scale in which wind farms participate in frequency regulation, there are inevitably some errors in the existing wind speed prediction technology

Therefore, it is difficult to accurately reflect the impact of short-term wind speed changes on the operating state of the unit when the above method is used for power command allocation.

[0004] Further studies have found that when the wind speed continues to decrease during the frequency regulation period, the speed of the unit decreases and its own kinetic energy decreases. If the wind farm is still allocated on the basis of the predicted average wind speed, the allocated power increase command may exceed the kinetic energy released by the unit itself. , which in turn causes the unit to lose stability and exit operation due to excessive kinetic energy release and the speed being lower than the minimum speed

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