Four-stage hierarchical control method for tandem double-wind-wheel wind turbine generator

Abstract

The invention discloses a four-stage hierarchical control method for a tandem double-wind-wheel wind turbine generator, and belongs to the technical field of wind power control. Four-stage hierarchical control logic is adopted, and through a four-stage control framework of a single-wind-wheel control stage, a two-wind-wheel coordination control stage, a double-wind-wheel unit system control stage and a network source coordination stage, complete protection control logic is formed from a double-wind-wheel unit network source side to a unit side, a cooperative control side and a single-wind-wheel side in a layer-by-layer progressive mode. The four-stage hierarchical control aims at optimal unit output and lowest load and cooperatively controls double-wind-wheel output, so that the unit efficiency is higher, grid connection is more friendly, the wind energy utilization rate is increased, the kilowatt-hour cost of the wind turbine generator is greatly reduced, and the grid connection characteristic of the unit is improved.

Description

technical field [0001] The invention belongs to the technical field of wind power control, and in particular relates to a four-level hierarchical control method for a tandem double wind turbine wind turbine. Background technique [0002] With the rapid development of wind power installed capacity, the current mainstream wind turbines adopt the form of single wind turbine horizontal axis, and are developing towards large-scale development. However, with the large-scale development of wind turbines, their core key technologies are subject to many restrictions, and there is an urgent need to develop new forms. High-efficiency wind energy conversion device. [0003] The tandem double-wind rotor structure is valued for its high efficiency and mature key core equipment. The tandem double wind turbine unit has two front and rear wind rotors, and the two wind rotors are coupled to each other, interact and work together, so the operation of the double wind turbine unit is very diffe...

AI Technical Summary

Problems solved by technology

The tandem double wind turbine unit has two front and rear wind rotors, and the two wind rotors are coupled to each other, interact and work together, so the operation of the double wind turbine unit is very different from the single wind turbine unit, but the existing reports of double wind turbines The control logic of the wind turbines still adopts the traditional control logic of the single wind turbines, resulting in the failure of the wind energy utilization efficiency of the double wind turbines to be optimal, and poor grid friendliness

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