Optimal control method for uniform fatigue distribution of wind farm units under active power output regulation

Abstract

The invention discloses an optimizing control method for uniform fatigue distribution of parts of a wind power station unit under active power regulation. DEL data modeling is conducted on the parts of the wind power unitunder an active power regulation mode, optimizing control over a wind power station with the complex terrain is conducted based on a DEL data model, the control strategy adopts anintelligent active power distribution strategy based on wind regime characteristic measurement, therefore, the optimizingcontrol method is suitable for the wind power station with the complex terrainand with the small wake effect; and by optimizing uniform fatigue distribution of the parts of the wind power station unit under active power regulation, the production-manufacturing and maintenancecosts of wind power generating equipment are reduced effectively, and the stability of a wind power generating system is improved.

Description

technical field [0001] The invention relates to the technical field of wind farms, in particular to an optimal control method for fatigue uniform distribution of components of wind farms, which is suitable for complex places with small wake effects. Background technique [0002] In my country, as the development of ideal wind farm resources is gradually exhausted, the development of onshore wind power has shifted to complex terrain wind farms with low wind speed and high turbulence. According to statistics, the area of ​​low wind speed resources available nationwide accounts for 68% of the country's wind energy resource areas; most of these low wind speed areas are complex terrain, and are close to the receiving end of the grid load. Compared with the regular layout of wind turbines in simple terrain wind farms, the layout of wind farms in complex terrains has significant differences. For wind farms with complex terrain, it is difficult to adjust the active power. The diffe...

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Problems solved by technology

However, while the above method solves the problem of active power regulation, it brings new problems: the allocation strategy that only considers the active power demand leads to severe uneven fatigue distribution among wind farm units in complex terrain, and the units with high average wind speed and turbulence intensity Component fatigue loads are much greater than other units, ultimately shortening service life

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