System and method for monitoring influence of earthquake on vibration of offshore wind turbine

Abstract

The invention discloses a system and a method for monitoring the influence of an earthquake on the vibration of an offshore wind turbine. The system comprises an ocean bottom seismograph, an accelerometer, a first strain gage and a second strain gage, wherein the ocean bottom seismograph is arranged at the ocean bottom of a wind power plant and used for measuring seismic parameters of an offshore wind single field domain, and the accelerometer is installed on a tower drum and used for measuring the acceleration of the tower drum; and the first strain gage and the second strain gage are installed on the tower drum and a blade respectively and used for measuring the strain of the tower drum and the blade. The system and the method aim at solving the problem of accuracy directly quoted by an existing national standard due to the fact that the offshore wind power plant is far away from the land, and the ocean bottom seismograph is arranged on the ocean bottom of the wind power plant and used for accurately monitoring the seismic data of the offshore wind single field domain. By comparing wind turbine data monitored by all-weather optical fibers and integrating dynamic analysis of wind loads and earthquake loads, influences of different earthquake motions on the vibration of the wind turbine are analyzed, and data support is provided for design, operation and maintenance of the wind turbine.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power disaster monitoring, and in particular relates to analyzing the influence of different ground motions on the vibration of offshore wind turbines. Background technique [0002] Offshore wind power is one of the future development directions of the wind power industry. However, judging from the current construction and approval of offshore wind power projects and future plans, a large proportion of offshore wind power sites are located near the earthquake zone, and there is a high potential Risk of earthquake damage. Therefore, a reasonable seismic design is very important to avoid a significant increase in the design cost of the support structure on the premise of ensuring the safety of the offshore wind power equipment and its support structure. [0003] In view of the large-scale development of offshore wind power and the fact that some coastal areas are located above seismic zones, ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a system and method for monitoring the impact of earthquakes on the vibration of offshore wind turbines, so as to overcome the problem of seismic accuracy in coastal wind farm areas, and overcome the problem that the data quoted directly from the range in GB50011 does not include coastal wind power areas. Design specifications and potential safety hazards caused by inaccurate parameters

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