A yaw ride-through control method to improve the availability of wind turbines

Abstract

The invention discloses a yaw crossing control method for improving the availability of a wind power generating set. Combining with the abnormal position coordinates of the current yaw ring gear, it is proposed that according to the current nacelle position angle, wind direction, wind speed and different yaw motor coordinate positions, the There are 6 sectors, and different yaw control strategies are adopted when the unit is in different sector positions. Through this strategy, it can be ensured that when the non-hazardous area is near, the unit can generate electricity in a timely manner according to the previous method. When it is near the dangerous area, it can protect the unit from passing through the dangerous area safely and quickly, and protect the yaw system from repeatedly crossing through the predictive means. . Compared with manual yaw-to-wind methods, the present invention can effectively avoid the loss of power generation caused by untimely yaw system or abnormal long-term shutdown of the yaw system, improve the availability of the unit, and effectively protect and prolong the service life of the yaw system. life.

Description

technical field [0001] The invention relates to the technical field of wind power generation control, in particular to a yaw ride-through control method for improving the availability of wind power generating sets. Background technique [0002] As more and more wind turbines are installed and operated at home and abroad, it is unavoidable that under some specific working conditions, the yaw ring gear of the unit will be partially abnormal, causing the unit to shut down for a long time. When this situation occurs in most wind farms, the unit is basically shut down, neither yaw nor power generation is allowed, and the unit will resume operation after the partial abnormality of the yaw ring gear of the unit is resolved. This is currently the safest way to protect the yaw system of the crew from further damage and the overall safety of the crew. However, this method will generally cause the unit to lose a large amount of power generation during shutdown due to the long recovery...

AI Technical Summary

Problems solved by technology

However, this method also has the risk of misjudgment due to personal subjective consciousness, and yaw errors may occur, or the yaw against the wind is not performed at the optimal first time after the wind direction changes. In addition, this method will also appear to a large extent The most efficient power generation cannot be achieved in the area where normal yaw can generate electricity at full load against the wind

[0004] Therefore, in any of the above situations, it is possible to lose a certain amount of power generation

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