Method for improving stability of wind power generator set at high-altitude area

Abstract

The invention provides a method for improving the stability of a wind power generator set at a high-altitude area. The method comprises the following steps: determining the rated wind speed of a plain type wind power generator set when the plain type wind power generator set of the same wind area grade is directly applied to the high-altitude area according to the wind area grade and the annual average air density; and changing the impeller system of the plain type wind power generator set to obtain a wind power generator set capable of working steadily at the high-altitude area according to the rated wind speed. By adopting the method, the plain type wind power generator set can be designed and reformed simply and efficiently, and the wind power generator set capable of working steadily at the high-altitude area can be obtained, thus the wind power generator set suitable for the high-altitude area can be researched and developped with lower cost.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to a method for improving the stability of wind power generators in high-altitude areas. Background technique [0002] As a kind of clean energy, wind energy plays an increasingly important role in international energy conservation and emission reduction, and as an energy conversion device for wind energy and electric energy - wind turbines play an increasingly important role in my country's manufacturing industry. [0003] More than 90% of the wind power projects that have been developed in my country are concentrated in non-high-altitude areas, and the western high-altitude areas with relatively good wind resources, such as Qinghai, Tibet, and Yunnan, have not yet realized or only a few installed capacity. Therefore, few wind power projects have been developed. That is to say, at present, the technology of plain-type wind turbines suitable for non-high-altitude areas in my count...

AI Technical Summary

Problems solved by technology

As the wind speed continues to increase, the blades enter a deep stall state. At this time, because the pitch control system cannot judge the pitch angle of the blades according to the aerodynamic power of the impellers, the wind turbine cannot work normally.

In addition, the thrust load of wind turbines continues to increase with the increase of wind speed, which may easily lead to catastrophic accidents in which wind turbines are blown down by strong winds.

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