Wind energy and tidal current energy coupled power generation method and system based on offshore horizontal axis wind turbine platform

Abstract

The invention provides a wind energy and tidal current energy coupled power generation method and system based on an offshore horizontal axis wind turbine platform. The method comprises the steps thatactive power of a wind generating set in the wind generating platform is monitored and collected in real time; the difference between the active power of the wind generating set and the rated power of the wind generating set is calculated; and the operation state and the power output of a tidal current energy power generation unit are controlled according to the calculated capacity difference signal to achieve wind-tide coupled power generation. According to the method, on the basis of the existing offshore wind power generation platform, existing power transmission equipment of offshore windpower is fully utilized to fuse tidal current energy power generation and wind power, offshore wind power capacity vacancy is filled through tidal current energy power generation, and wind power fluctuation is compensated in combination with a wind tide coupling control strategy, so that the offshore wind energy and tidal current energy coupling power generation system with stable output is constructed, the comprehensive utilization rate of offshore renewable energy sources and the reliability of the power generation system are improved at low construction cost, and the economic benefits of the whole power generation are improved.

Description

technical field [0001] The invention belongs to the technical field of joint power generation of offshore wind energy and tidal current energy, and in particular relates to a wind energy and tidal current energy coupled power generation method and system based on an offshore horizontal axis wind turbine platform. Background technique [0002] The ocean covers 70% of the earth's surface and contains enormous energy. Offshore energy is a clean and renewable energy that can be directly used by people in ocean energy. The scientific development of offshore energy has important strategic significance for alleviating the energy crisis, reducing environmental pollution, and adjusting the energy structure. At present, due to the limitation of technical conditions, the offshore renewable energy with development and utilization value is mainly wind energy, tidal energy, tidal current energy and wave energy. Among them, compared with other offshore energy utilization technologies, the...

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