Auxiliary power supply system of wind generation set, wind driven generator and auxiliary power supply power supply method of wind generation set

Abstract

The invention provides an auxiliary power supply system of a wind generation set, a wind driven generator and an auxiliary power supply power supply method of the wind generation set. The auxiliary power supply system of the wind generation set comprises a box type transformer, an auxiliary transformer, a tower footing cabinet and a main control cabinet. A first super capacitor is arranged in the tower footing cabinet, and the box type transformer, the auxiliary transformer, the first super capacitor and the main control cabinet are electrically connected in sequence. The auxiliary power supply system of the wind generator set further comprises a solar photovoltaic device which is electrically connected with the first super capacitor and used for supplying electricity for the first super capacitor. According to the mentioned technical scheme, in the process of debugging a fan, electric energy provided by the solar photovoltaic device can meet the debugging requests of the wind generation set, electricity does not need to be taken from a power grid with the help of the auxiliary transformer, the wind generation set is enabled to be capable of being started normally, and grid connection can be carried out on the wind generation set. In addition, due to the fact that the solar photovoltaic device can supply electricity for the first super capacitor continuously, the possibility that electricity lacking conditions occur to the first super capacitor is greatly reduced, and the service life of the super capacitor is prolonged.

Description

technical field [0001] The invention relates to the hardware system technology of a wind turbine, in particular to a self-consumption power system of a wind turbine, a wind power generator and a self-consumption power supply method thereof. Background technique [0002] Wind power is one of the renewable energy sources, which is cheap, inexhaustible, inexhaustible and environmentally friendly. Wind turbines are the core equipment in wind power generation, and their main function is to convert wind energy into electrical energy. When the wind turbine converts wind energy into electrical energy, the equipment of the wind turbine also needs electric energy to ensure the normal operation of the control system, yaw system, pitch system and safety chain on the wind turbine. The wind power generator includes a tower tube fixedly arranged on the foundation and a nacelle cover arranged on the top of the tower tube, and the inner chamber of the tower tube and the nacelle cover commun...

AI Technical Summary

Problems solved by technology

[0005] In practical applications, the wind turbine needs to be debugged before starting up. During the debugging process, in order to ensure safety, the box-type transformer box-type transformer does not take power from the grid, and the auxiliary transformer cannot supply power to the first supercapacitor.

Therefore, during the commissioning process, the self-consumption power of the wind turbine comes from the electric energy stored in the first supercapacitor, and the electric energy stored in the first supercapacitor is limited, which makes it difficult to meet the demand for electric energy during the commissioning process of the wind turbine

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