A wind turbine transmission chain multi-mode control protection method and device

Abstract

The invention discloses a method and device for multi-mode control and protection of a transmission chain of a wind turbine. The steps of the method include: S1. Acquiring the operation data of a target wind turbine, and identifying each designated frequency of the transmission chain according to the operation data as a key monitoring frequency; S2 .Control the operation of the target wind turbine according to multiple preset control modes, and monitor the state of the transmission chain during the operation of the target wind turbine, and judge whether the specified operation index exceeds the normal range at the key monitoring frequency. If it is controlled within multiple presets The control mode is switched to adjust the corresponding operation index; the device includes a frequency identification module and a multi-mode control module. The invention has the advantages of simple implementation method, low cost, multi-mode automatic control and protection of the transmission chain of the wind power generating set, high protection control precision, good protection performance, fast response speed and the like.

Description

technical field [0001] The invention relates to the technical field of wind power generation equipment protection, in particular to a multi-mode control and protection method and device for a transmission chain of a wind power generating set. Background technique [0002] The transmission chain is the foundation of the wind power generation unit. The transmission chain of the motor unit mainly includes several key components such as blades, hubs, main shafts, gearboxes, generators, etc., which bear the main load of the unit. If there is a problem with the components on the transmission chain, it will Seriously affect the power generation performance and reliability of the unit. At present, the following two methods are mainly used for the protection of the transmission chain of wind turbines: [0003] 1. The way of configuring the protection device: this kind of method is to realize the protection by configuring the corresponding protection device in the transmission chain,...

AI Technical Summary

Problems solved by technology

The above-mentioned method of protection and control directly based on a certain operating index has low actual protection accuracy, and it is difficult to perform protection in a timely and accurate manner when the transmission chain is abnormal, and fluctuations in operating indicators such as speed may be caused by abnormal transmission chains, or may It is caused by other reasons. When the operation index fluctuates only due to reasons that will not cause the operation risk of the wind turbine, it is not necessary to perform shutdown operations. Therefore, there will actually be a large number of unnecessary shutdown protections in the above protection methods, and may even cause Frequent shutdowns affect the stable operation of wind turbines

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