Dry type transformer device for offshore wind power generation

Abstract

The invention provides a hermetic, auto-cycling and auto-cooling dry type transformer device used for offshore wind power generation and installed in an offshore wind generator tower or an engine compartment. The device mainly comprises a resin molded dry type transformer, a hermitic metal shell, an inner cooler, an outer cooler, a cooling pump and a controller. With the adoption of the metal hermetic shell, the erosion of the external moisture, salt and corrosive gas can be effectively prevented; the transformer is not in direct contact with the offshore natural environment, has strong anti-corrosion ability and long service life; the transformer material has properties of flame retardant and self-extinguishment, and is not easy to occur the fire accident;a low-voltage coil and high-voltage coil winding is provided with a cooling wind duct; and a guide plate device is adopted, so that the heat dissipation efficiency is increased greatly; and the transformer has strong overload ability and is especially suitable for rapid fluctuation occasions of wind generation power.

Description

technical field [0001] The invention relates to a transformer device, in particular to a dry-type transformer device installed in an offshore wind power generator tower or used for fully enclosed internal circulation. Background technique [0002] The transformer is the main equipment used by the offshore wind farm to send electricity to the wind turbine. Its function is to transform the 690v electric energy generated by the offshore wind turbine into 35kv through the transformer, transmit it to the onshore substation, and then connect it to the grid through the onshore substation. . Due to the influence of marine climate, environment and other factors, such as: the special location where the transformer is placed, there is no surface on the sea, the location for placing the transformer can only be in the tower or the engine room; the transformer room needs to be well ventilated to dissipate its own Due to the particularity of the natural environment at sea, the service lif...

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Problems solved by technology

Due to the influence of marine climate, environment and other factors, such as: the special location where the transformer is placed, there is no surface on the sea, the location for placing the transformer can only be in the tower or the engine room; the transformer room needs to be well ventilated to dissipate its own Due to the particularity of the natural environment at sea, the service life of conventional transformers in offshore wind farms can only be It is the period of 1 / 3-1 / 4 of the service life on land

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