Temperature abnormity early warning for water cooling system of wind turbine generator

Abstract

The invention relates to the technical field of wind power, and discloses a wind turbine generator set water-cooling system temperature abnormity early warning, which comprises the following steps: collecting monitoring data of a wind turbine generator set converter water-cooling system, selecting characteristic parameters related to the temperature of the converter water-cooling system, cleaning abnormal values such as null values and zero values in the monitoring data, and carrying out early warning on the abnormal temperature of the converter water-cooling system. Linear interpolation is adopted for filling, and different characteristic parameters are analyzed; all wind driven generators in the same wind power plant are divided into a plurality of wind driven generator sub-clusters according to geographic positions and altitude distribution, and for each wind driven generator sub-cluster, characteristic parameters of a wind turbine generator converter water cooling system running in the sub-cluster are analyzed. The wind turbine generator water cooling system temperature abnormity early warning is beneficial for operation and maintenance personnel to reasonably adjust operation and arrange a maintenance plan, effectively reduces electric quantity loss caused by fault shutdown, and maintains stable operation of a power grid.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to an early warning of temperature abnormalities in a water cooling system of a wind turbine. Background technique [0002] A wind turbine is a kind of electrical equipment that converts wind energy into mechanical energy, and drives the rotor of the generator to rotate through the mechanical energy, thereby outputting alternating current. The wind power converter is a key component of the wind turbine, and its health status directly affects the safety of the wind turbine operation, and then affects the stable operation of the entire wind farm. With the continuous increase of the power of the wind turbine, the capacity of the frequency converter is also increasing. The heat generated by the converter in the wind turbine is large, and the high temperature will seriously affect the safe and reliable operation of the frequency converter. The converter can work normally, and the con...

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Problems solved by technology

[0003] At present, the maintenance of the water-cooling system of the wind power converter usually adopts after-the-fact maintenance, and it is difficult for the maintenance personnel to grasp the situation of the water-cooling system of the wind power converter in real time

The fault prediction technology can help the maintenance personnel to predict the abnormal temperature of the water cooling system of the wind power converter in advance. However, most of the existing fault prediction methods rely on the operation data of the whole life cycle of the equipment, and the established fault prediction model is only applicable to a single unit. Equipment, unable to effectively coordinate and correlate multiple wind turbines in the wind farm for early warning of potential faults, the portability of the model is poor, and there is still a lack of an effective and scalable fault prediction method for the water cooling system of wind power converters

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