Yaw crossing control method for improving availability of wind generating set

Abstract

The invention discloses a yaw crossing control method for improving the availability of a wind generating set. According to the method, six sectors are divided according to the current cabin positionangle, wind direction, wind speed and coordinate positions of different yaw motors in combination with a current abnormal position coordinate of a yaw gear ring, and different yaw control strategies are adopted when the set is positioned at different sector positions. By means of the strategy, the set normally realizes wind alignment for generating power in time according to a previous mode when the set is close to non-dangerous areas, and when the set is close to dangerous areas, the set can be protected to safely and rapidly pass through the dangerous areas and a yaw system is protected against repeated crossing through a prediction means. Compared with a manual yaw wind alignment mode and the like, the method has the advantages that the loss of generating capacity caused by untimely wind alignment or long-time shutdown due to abnormality of the yaw system can be effectively avoided, so that the availability of the set is improved, and meanwhile, the service life of the yaw system iseffectively protected and prolonged.

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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