Wind power transformer and manufacturing method thereof

Abstract

The invention relates to a wind power transformer and a manufacture method, wherein the wind power transformer comprises an iron core, a low tension coil with insulating ends and a high tension coil. A protection screen arranged between the low tension coil and the high tension coil, which surrounds the outer surface of the low tension coil for one cycle. The head and the tail ends of the protection screen are lapped, and an insulation separator is arranged between the lapped two ends. When wind power grid system has excess voltages of instantaneous mutation, the wind power transformer can prevent the low tension coil, and an alternating-current winding of a wind-driven generator and a low voltage control system which are connected with the low tension coil from invading by excess voltages, thereby ensuring running safety of the wind power transformer, the wind-driven generator and the low voltage control system.

Description

technical field [0001] The invention relates to a transformer, in particular to a wind power transformer and a manufacturing method thereof. Background technique [0002] Wind power is a clean renewable energy. In recent years, my country's wind power industry has developed rapidly, and wind power will become the third largest source of conventional power in my country. However, wind power technology is still in its infancy in my country. Aspects also need to be continuously improved, improved and perfected. In a wind power system, wind turbines transmit electrical energy to the grid through wind power transformers. When there is an instantaneous sudden overvoltage in the power grid, the high-voltage coil of the wind power transformer connected to the power grid will naturally suffer from over-voltage damage (under the condition of reasonable insulation coordination, the high-voltage coil of the wind power transformer has the ability to withstand the corresponding over-volta...

AI Technical Summary

Problems solved by technology

At the same time, due to the capacitive coupling between the high and low voltage coils of the transformer, the overvoltage will pass through the low voltage coil to the AC winding of the wind turbine connected to it and the control system on the low voltage side, and in severe cases will cause the AC of the wind turbine to Faults due to insulation damage of windings or low-voltage control systems

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