Offshore wind and ocean current energy storage power generation system realized by utilizing hydraulic transmission

Abstract

The invention discloses an offshore wind and ocean current energy storage power generation system realized by utilizing hydraulic transmission and belongs to the technical field of renewable energy power generation. The offshore wind and ocean current energy storage power generation system comprises a wind energy and ocean current energy acquisition and conversion system, a hydraulic system, an energy storage device, a power generation system and a detection control system, wherein the wind energy and ocean current energy acquisition and conversion system is connected with the hydraulic system through a wind energy coupler (27) and an ocean current energy coupler (4); the hydraulic system is connected with the power generation system through a coupler (13); and the energy storage device is connected with the hydraulic system through an electromagnetic directional valve (8). By the system, the problem that the energy transfer direction is changed due to change of wind direction and flow direction is solved by utilizing the hydraulic transmission and energy storage technologies on the basis of power generation technology of fully integrating two renewable resources, namely the wind energy and ocean current energy, and the aim of continuously and stably generating power at constant frequency by employing random and intermittent wind energy and ocean current energy is fulfilled.

Description

technical field [0001] The invention relates to a power generation system utilizing wind energy and ocean current energy, and belongs to the technical field of renewable energy power generation. Background technique [0002] The ocean not only has huge wind resources, but also has abundant hydrodynamic resources. In the existing technology, in addition to the large-scale implementation of offshore wind power generation, the US Renewable Energy Laboratory (NREL) proposed the idea of ​​ocean current power generation on offshore floating platforms and conducted related theoretical research, but it has not yet used wind energy and ocean current energy at the same time. Large-scale power generation from renewable resources. [0003] Whether it is the sole use of offshore wind power generation or the sole use of ocean current power generation, it will cause the problem of insufficient utilization of marine renewable resources for power generation. Integrating two abundant re...

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Problems solved by technology

However, the system does not consider the problem of energy storage, which reduces the utilization rate of resources; the process of directional rotation and constant frequency power generation of the generator is relatively complicated, which increases the complexity of system control; the rigid connection makes the system extremely vulnerable to the instantaneous load of renewable resources impact, shortening the useful life of the system

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