Method for controlling wind generating set under strong wind

Abstract

The invention relates to a method for controlling a wind generating set under strong wind, which comprises the following steps of: A, monitoring the state of the generating set, executing a step B when a fan runs normally, and stopping the generating set when the fan fails; B, monitoring the wind speed, stopping the generating set when the wind speed is greater than a maximum running wind speed, and executing the step A when the wind speed is less than or equal to a cut-out wind speed, otherwise, executing a step C; and C, reducing power output. The invention provides a safe and efficient control mode; based on a normal wind generator control strategy, a concept of strong wind control curve is introduced so that the wind generating set still runs normally under a high wind speed working condition and is combined to the grid while reducing the wind load influence; and the method improves the utilization rate and power generation quantity on the premise of ensuring the safety of the fan, meanwhile eliminates a parameter of restarting wind speed, avoids redundant start-stop processes, and prolongs the service life of the fan.

Description

technical field [0001] The invention relates to the field of control systems for wind power generators, in particular to a control method for wind power generators under strong winds. Background technique [0002] The focus of wind turbine control system research is mainly on the development of control strategies. Fuzzy control and adaptive control are mainly aimed at the realization of control in the normal operation mode of wind turbines, and rarely involve the operation mode in strong wind conditions. The existing operating mode under strong wind conditions is: when the wind speed is greater than the cut-out wind speed of the fan, stop and wait; when the wind speed reaches the restart wind speed, start the fan. The disadvantage of this implementation method is that when the normal wind speed is between the restart wind speed and the cut-out wind speed, a large gust of wind will cause a long-term shutdown of the fan, reducing the availability and power generation of the fa...

AI Technical Summary

Problems solved by technology

The disadvantage of this implementation method is that when the normal wind speed is between the restart wind speed and the cut-out wind speed, a large gust of wind will cause a long-term shutdown of the fan, reducing the availability and power generation of the fan. Starting and stopping will affect the service life of the unit

[0003] It can be seen that the above-mentioned existing control method for wind power generators, its method and use under strong wind conditions, obviously still have inconvenience and defects, and need to be further improved urgently.

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