Large-sized wind generating set peak adjusting and controlling method with minimum clearance being increased

Abstract

The invention discloses a large-sized wind generating set peak adjusting and controlling method with the minimum clearance being increased. According to the large-sized wind generating set peak adjusting and controlling method with the minimum clearance being increased, power peak adjusting is added based on a traditional control strategy and pitch starts changing in advance, the thrust is reduced, and the minimum clearance is increased when the power achieves a certain limiting value. The large-sized wind generating set peak adjusting and controlling method with the minimum clearance being increased has the advantages of being simple and efficient in control, obvious in minimum clearance increasing effect and small in power generation loss; increasing the minimum clearance and meanwhile reducing set over-speed halt caused by gust of wind at the rated wind speed; being benefited to reduce manufacturing costs of the large-sized wind generating set and improving competitiveness; increasing the minimum clearance, reducing load, shortening the design period and reducing costs of per kilowatt on the basis that geometric designs of critical components do not modified although partial electric power is lost.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a peak regulation control method for increasing the minimum headroom of a large wind power generating set. Background technique [0002] In recent years, worldwide, especially in China, the installed capacity of wind turbines has continued to increase rapidly, and there are fewer and fewer high-quality wind resources available. And in China, low wind speed wind resources are close to the load center, which is conducive to the output of wind power. Therefore, the market urgently needs wind turbines suitable for low wind speed areas. In order to quickly respond to market demand, complete machine design manufacturers usually choose based on the original model Carry out technical upgrades, optimize the design of some components, and increase the diameter of the wind rotor to meet the needs of low wind speed areas and reduce the cost of electricity. However,...

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Problems solved by technology

[0003] From the point of view of the complete machine design manufacturer, on the basis of the original model, if the geometric design of the wheel hub and drive chain is not changed, the minimum headroom will hardly meet the requirements of the GL specification, and it is not conducive to the safe operation of the unit; The geometric design of these key components will take a long development cycle and increase the cost

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