System and method for online indirect measurement of pitch and yaw moment of wind energy or tidal current energy generator set

Abstract

The invention discloses an online indirect measurement system and method for pitch and yaw moment of a wind energy or tidal current energy generator set. Comprising an incoming flow velocity measurement module, a generator rotation speed measurement module, a pitch angle measurement module and a computer. The incoming flow velocity measurement module measures the flow velocity at the center of the impeller; the generator rotating speed measurement module measures the generator rotating speed; the pitch angle measuring module measures the pitch angle of each blade; and the computer receives the flow velocity, the rotating speed and the pitch angle signals, obtains the pitching moment and the yawing moment of the generator set through online calculation, and displays and stores the measured and calculated data in real time. According to the invention, reliable pitching and yawing moment online measurement of the generator set is realized, key data is provided for real-time operation state monitoring and active load control of the generator set, the safety and reliability of whole machine operation are improved, reliable data reference is provided for the optimization design process of the generator set, and the design cost of the generator set is reduced; the measurement system and method are low in implementation difficulty, low in cost and high in reliability.

Description

technical field [0001] The invention belongs to the field of new energy power generation equipment, and in particular relates to an online indirect measurement system and method for pitch and yaw moments of a wind energy or tidal current energy generating set. Background technique [0002] As emerging renewable energy equipment, wind power generation equipment has achieved large-scale application, and tidal current power generation equipment has completed the development stage from principle verification to industrial prototype. At present, the reliability and cost of equipment operation have become the bottleneck issues for the development of wind energy and tidal current energy power generation industry. Among them, the online measurement technology of asymmetric loads such as unit pitching moment and yaw moment is a key technology. [0003] The accuracy of on-line measurement of asymmetric load will affect the real-time monitoring of the unit's operating status and the a...

AI Technical Summary

Problems solved by technology

This type of direct measurement method has the following disadvantages: installing sensors on the rotating parts of the unit such as blades and main shafts, it is difficult to implement installation, power supply, cable routing, signal transmission, etc.; the high stiffness of the measured parts affects the accuracy of the sensors

For tidal current energy generation equipment, due to the complexity of the underwater environment, the direct measurement of its asymmetric load faces greater difficulties, and the impact of water flow and sediment will reduce the life of the sensor

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