Wind power plant level multi-working-condition double-fed unit static and stable order reduction method
A doubly-fed unit, static and stable technology, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of no reduced-order model accuracy verification and no consideration of the applicability of a single-machine reduced-order model.
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[0047] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:
[0048] A wind farm level multi-working condition doubly-fed unit static stability reduction method, comprising the following steps:
[0049] Step 1. Establish the coordinate system of the doubly-fed unit, and build a detailed model of three different working conditions of the doubly-fed unit: super-synchronous, sub-synchronous and power limited.
[0050] A double-fed unit coordinate system is established, which are the system reference coordinate system, the generator rotor reference coordinate system, the stator flux linkage reference coordinate system and the grid-side inverter AC voltage reference coordinate system. Build under DIgSILENT such as figure 1 The physical model shown, and associated with the coordinate system, clarifies the generator equation convention, unifies the reference coordinate system of the stator flux linkage, and determi...
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