A multi-scale low-wear fit method to reduce the number of switching times of doubly-fed fan crowbar
A doubly-fed, multi-scale technology, applied in the field of power systems, can solve the problems that the wind farm is difficult to meet the low-voltage ride-through standard, and the fault characteristics of the doubly-fed wind turbine are complex, so as to improve the low-voltage ride-through capability, reduce the number of switching, The effect of ensuring voltage stability
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] Such as figure 1 As shown, a multi-scale low-wear fit method to reduce the number of switching times of the doubly-fed fan crowbar, the steps are as follows:
[0024] S1, real-time monitoring of the doubly-fed wind turbine grid-connected point voltage, and predict whether the rotor current will exceed the limit, and judge whether to switch the control mode.
[0025] S1.1, collect the voltage of the grid-connected point of the wind turbine.
[0026] S1...
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