Regulation control of wind generator set

Abstract

The invention provides an adjustment and control method for a windmill generator, which comprises a generator unit and an adjuster. An active speed loss adjustment windmill generator unit is adopted; speed loss feature is adopted for a blade; blade space variation adjustment is adopted for the adjustment system. At low wind speed, the distance between blades can be adjusted to the position for acquiring maximal power and the adjustment of blade distance angle optimizes the power output of the machine unit. When the power produced by the windmill generator unit exceeds the rated power, the distance of blades actively adapts to the direction of speed loss and harnesses the power within the rated value and limit the maximal power output of the machine unit. Along with the continuous change of wind speed, the blades need only to be finely tuned to maintain the state of speed loss. During braking, the blades can be adjusted to resemble the effect of pneumatic braking, thereby greatly reducing the impact on a transmission system from mechanical braking.

Description

technical field [0001] The invention relates to a regulation and control method of a generating set, in particular to a regulation and control method of a wind power generating set. Background technique [0002] With the application of computer technology and advanced control technology to the field of wind power, the control technology of wind power generation in grid-connected operation has developed rapidly. The advantage of the stall adjustment type is that the stall adjustment is simple and reliable. When the change of the output power caused by the change of the wind speed is only through the passive stall adjustment of the blades, the control system does not perform any control, which greatly reduces the control system. The disadvantage is that the blades are heavy and large. (Compared with variable pitch fan blades), the blades, wheel loads, towers and other components are under greater force, and the overall efficiency of the unit is low. The advantage of variable p...

AI Technical Summary

Problems solved by technology

[0002] With the application of computer technology and advanced control technology to the field of wind power, the control technology of wind power generation in grid-connected operation has developed rapidly. The advantage of the stall adjustment type is that the stall adjustment is simple and reliable. When the change of the output power caused by the change of the wind speed is only through the passive stall adjustment of the blades, the control system does not perform any control, which greatly reduces the control system. The disadvantage is that the blades are heavy and large. (Compared with variable pitch fan blades), the blades, wheel loads, towers and other components are under greater force, and the overall efficiency of the unit is low. The advantage of variable pitch adjustment is that the force on the blades is small, and the blades made It is relatively light, and the pitch angle can be automatically adjusted according to the wind speed, so it can absorb as much wind energy as possible and convert it into electrical energy, while maintaining a stable power output in the high wind speed section. The disadvantage is that the structure is more complicated and the failure rate is relatively high.