Motor monitoring system of wind turbine generator and wind power plant

Abstract

The invention discloses a motor monitoring system of a wind turbine generator and a wind power plant. The motor monitoring system of the wind turbine generator comprises a first current acquisition device installed on a power supply cable of a yaw motor in the wind turbine generator, a second current acquisition device installed on a power supply cable of a variable-pitch motor in the wind turbine generator, a terminal connected with the first current acquisition device, the second current acquisition device and a wind turbine controller and used for determining whether the yaw motor is abnormal, determining whether the variable-pitch motor is abnormal, giving out a prompt when the yaw motor and / or the variable-pitch motor are / is abnormal and informing the wind turbine controller, and a power converter connected with a generator of the wind turbine generator. According to the technical scheme, the yaw motor and the variable-pitch motor are detected through the motor monitoring system of the wind turbine generator, abnormity is found in time, the motors can be processed in time, and then replacement of the motors is reduced as much as possible, so that the cost is reduced, and the electric quantity loss of the wind turbine generator is reduced.

Description

technical field [0001] The present application relates to the technical field of wind turbine detection technology, and more specifically, relates to a wind turbine motor monitoring system and a wind farm. Background technique [0002] The yaw motor and the pitch motor play a very important role in the wind turbine, so their operation needs to be checked in order to grasp their operation status and deal with them when they fail. [0003] In the existing wind turbines, the yaw motor and the pitch motor are generally checked manually to determine whether the motor is normal. However, since the yaw motor and the pitch motor are installed in the nacelle, the staff cannot timely Therefore, it may affect the safe operation of wind turbines, and may even lead to major safety accidents. In addition, if the staff finds that the motor has failed, the motor needs to be replaced. However, due to the small location of the nacelle, the replacement of the motor is not easy to achieve, and...

AI Technical Summary

Problems solved by technology

[0003] In the existing wind turbines, the yaw motor and the pitch motor are generally checked manually to determine whether the motor is normal. However, since the yaw motor and the pitch motor are installed in the nacelle, the staff cannot timely Therefore, it may affect the safe operation of wind turbines, and may even lead to major safety accidents

In addition, if the staff finds that the motor has failed, the motor needs to be replaced. However, due to the small location of the nacelle, the replacement of the motor is not easy to achieve, and failure to detect the motor failure and replacement of the motor in time will lead to a relatively long downtime of the wind turbine. As a result, the power loss is relatively large. At the same time, due to the relatively high cost of the motor, the cost of replacing the motor is relatively high.

Images