Equivalent calculation method for large-scale wind power plant of parallel structure
A large-scale wind farm and equivalent calculation technology, applied in the field of value calculation, can solve problems such as the inability to reflect the influence of small disturbance stability of wind farms, and achieve the effect of reducing computational complexity and data storage capacity
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[0024] The present invention proposes an equivalent calculation method for a large-scale wind farm with a parallel structure, including:
[0025] Step 1: Establish a linearized state-space model of the wind farm for the parallel structure wind farm composed of M wind turbines;
[0026] Step 2: Through the equivalent transformation of the state variables of the wind farm, the linearized state space matrix of the wind farm is similarly transformed into a block diagonal matrix;
[0027] Step 3: Decoupling the linearized state-space model of the wind farm as follows: M-1 subsystems are composed of a wind turbine connected to the infinite bus through a line, and the Mth subsystem is connected to the outside by a wind turbine through a modified network For power system configuration, according to the linearized model of the Mth subsystem, its nonlinear model is inversely deduced to obtain the equivalent model of a single wind farm;
[0028] Step 4: Divide the Mth subsystem into two...
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