Off-grid and grid-connected self-adaptive wind turbine generator set control device and method

Abstract

The invention discloses an off-grid and grid-connected self-adaptive wind turbine generator set control device and an off-grid and grid-connected self-adaptive wind turbine generator set control method. The off-grid and grid-connected self-adaptive wind turbine generator set control device comprises a wind turbine generator set, a rectifying module, an off-grid switch, a grid-connected switch, aninverter module, a hydrogen generation module and a control module, wherein the wind turbine generator set is connected with the rectifying module, the rectifying module is connected in series with the off-grid switch and the hydrogen generation module, the rectifying module is connected in series with the grid-connected switch and the inverter module, a series branch circuit in which the off-gridswitch and the hydrogen generation module locate is connected in parallel with a series branch circuit in which the grid-connected switch and the inverter module locate, and the inverter module is connected with a public power grid; and the control module is connected with the wind turbine generator set, the off-grid switch and the grid-connected switch, and is used for controlling the switchingon and off of the off-grid switch and the grid-connected switch according to an operating state of the wind turbine generator set. The off-grid and grid-connected self-adaptive wind turbine generatorset control device and the off-grid and grid-connected self-adaptive wind turbine generator set control method realize the automatic switching of off-grid and grid-connected states of the wind turbinegenerator set; and electric energy is directly delivered into the hydrogen generation module in the off-grid mode, thereby improving the utilization rate of energy.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an off-grid self-adaptive control device and method for a wind power generating set. Background technique [0002] As a kind of power generation equipment, wind turbines are divided into two power generation modes: grid-connected and off-grid. In the grid-connected mode, the wind turbine is connected to the public grid, and the generated electric energy enters the public grid. In the off-grid mode, the wind turbine is directly connected to the storage battery, and the generated electric energy enters the storage battery directly without going through the public grid. In order to make the wind power generator applicable to a wider range, it is necessary to provide a wind power generator working mode that integrates off-grid and grid connection. [0003] The prior art provides a grid-connected and off-grid integrated device for microgrid wind turbines as follows: th...

AI Technical Summary

Problems solved by technology

[0005] In the off-grid mode, the electric energy generated by the wind turbine is stored in the battery pack, and the battery is used as a power source to provide electric energy for the electrical appliances. During the charging and discharging process of the battery, the electric energy conversion inevitably produces losses, and the resource utilization rate is low.

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