Energy conversion layered optimization control system and method for wave energy power generation device

Abstract

The invention discloses an energy conversion layered optimization control system and method for a wave energy power generation device. The system employs a three-layer system architecture, a layered control layer receives an electric energy dispatching instruction of an island microgrid, manages a function control layer, and also transmits the real-time operation condition of the wave energy powergeneration device to a monitoring system of the island microgrid, the function control layer receives a control instruction of the layered control layer and manages a function implementation layer ina unified mode, the function implementation layer comprises a wave energy capture system control unit, a hydraulic energy conversion system control unit and an electric energy conversion system control unit, power matching and operation optimization among the wave energy capture system, the hydraulic energy conversion system and the electric energy conversion system are realized, and the efficiency and controllability of the wave energy, the hydraulic energy and an electric energy multistage energy conversion system of the wave energy power generation device are improved, so that the controllability and stability of electric energy output of the wave energy power generation device are improved, and grid-connected coordinated operation of the wave energy power generation device from the island microgrid is facilitated.

Description

technical field [0001] The present application relates to the technical field of wave energy power generation, and in particular to an energy conversion hierarchical optimization control system and method for a wave energy power generation device. Background technique [0002] Due to the long distance from the islands in the deep sea to the main land power grid, the construction cost of offshore power transmission is high, and it is difficult to achieve grid connection with the land main power grid. As a result, the remote seas far away from the land have problems such as single power supply methods and high power supply costs. [0003] Wave energy is one type of ocean energy, which is generated by wave motion on the ocean surface, and is composed of kinetic energy generated by particle motion in fluctuating water and potential energy of the vertical displacement of the wave surface relative to the average water surface. The use of wave energy to generate electricity can par...

AI Technical Summary

Problems solved by technology

In the current wave energy generation device that uses the wave energy-hydraulic energy-electric energy conversion link, more attention is paid to the system reliability of the power generation device and the adaptability to the harsh marine environment, and the automatic control technology at all levels of the energy conversion system has yet to be developed. There is still a lot of room for improvement in the energy conversion efficiency of wave power generation, the controllability of the energy conversion process, and the stability and controllability of power output.

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