Deepwater semi-submersible platform type wind power plant

Abstract

The invention discloses a deepwater semi-submersible platform type wind power plant which comprises a plurality of wind turbines, a deepwater semi-submersible platform used for supporting wind turbines and a hanging chain type anchoring mechanism, wherein the anchoring mechanism is used for anchoring the deepwater semi-submersible platform at the bottom of the sea; the deepwater semi-submersible platform comprises a deck platform, a tuned liquid column damper device and a underwater buoyancy tank, wherein the tuned liquid column damper device is arranged inside the deck platform; the deck platform is connected with the underwater buoyancy tank through a stand column; the bottom of the underwater buoyancy tank is connected with the hanging chain type anchoring mechanism. Aiming at the existing wind power plant frequency fixed defect, the seakeeping of the wind motor system in heavy storm wave can be greatly improved, the vibration strength of the wind motor system local component is greatly reduced, and the economical efficiency of the wind motor system is greatly improved.

Description

technical field [0001] The invention relates to a device in the technical field of offshore wind power generation, in particular to a deep-water semi-submersible platform-type floating wind farm with adjustable frequency. Background technique [0002] At present, a considerable part of my country's electricity supply comes from coal-burning thermal power generation. The emissions generated by coal-fired power generation will cause serious environmental pollution and induce annoying smog weather. Another big disadvantage of coal-fired power generation is that coal is a non-renewable resource. With the sharp increase of human energy demand, the coal resources on the earth are being consumed rapidly and become increasingly depleted. Therefore, in recent years, people have become more and more It has turned its attention to wind power, a clean renewable energy source, and the development of wind power has gradually developed from land development to offshore wind power developme...

AI Technical Summary

Problems solved by technology

But according to Hogben, N., Duncan, N.M.C. & Olliver, G.F. (1986), Global Wave Statistics, Unwin Brothers, London book list and read the wave statistics around the world, it can be considered that in a certain sea area throughout the year There are four dominant wave frequencies (one per season), even if the floating foundation of the wind turbine has adjusted its resonance frequency during the design process to avoid the dominant wave frequency in a certain season in the sea area, but because the floating foundation The dominant frequency of the waves in the sea area changes throughout the year, which will make the vibration damping design of the floating foundation useless in most of the time throughout the year, so it cannot meet the current requirements

[0004] With the development of deep-sea wind power development technology, some engineers also proposed to install a tuned liquid column damper for deep-water floating wind turbines, but the conventional tuned liquid column damper can only change the oscillation frequency by adjusting the length of the liquid column in the U-shaped tube , so that when the design of the deep-water floating wind turbine is completed, its fixed vibration frequency cannot match the wave dominant frequency that changes throughout the year in the sea area where it is located, which will cause the tuned liquid column damper to lose most of the time throughout the year. function, so it cannot meet the current requirements

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