Wind power plant double-element equivalent model construction method
A technology of equivalent model and construction method, which is applied in wind power generation, electrical components, circuit devices, etc., and can solve problems such as large environmental complexity, large errors, and poor accuracy
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specific Embodiment approach 1
[0061] Specific implementation mode one: the following combination figure 1 Describe this embodiment, a method for constructing a two-element equivalent model of a wind farm described in this embodiment, the specific steps of the method include:
[0062] Step 1. According to the actual power of n wind turbines in the wind farm, split each wind turbine into an equivalent value, so that the power of each wind turbine after splitting is the same, and obtain N equivalent wind turbines; wherein, N>n>0;
[0063] Step 2. Aggregating and simplifying the mathematical models of N equivalent wind turbines to obtain the model parameters of the equivalent wind turbine A1;
[0064] Step 3: Construct the model of the equivalent wind turbine A2 and connect it in parallel with the equivalent wind turbine A1, obtain the parameters of the equivalent wind turbine A2 according to the constant input impedance and the law of energy conservation; complete the construction of the two-element equivale...
specific Embodiment
[0166] Specific embodiments: this embodiment is specifically a two-element equivalent method when the wind turbine parameters are different;
[0167] The two-element equivalent model when the wind turbine parameters are different is the same as that when the parameters are the same, and the parameter calculation process is also the same.
[0168] (1) Method for determining parameters of equivalent machine A1
[0169] Split each wind turbine in the wind farm according to its input wind power into corresponding N 1 , N 2 , N 3 …N n Equivalent wind turbines, the equivalent parameters are:
[0170] (N i Taiwan, i=1,2,3...n) (37)
[0171] Among them, H i is the inertia time constant of the i-th wind turbine in the original wind farm; Z i is the impedance parameter of the i-th wind turbine in the original wind farm. The only difference from formula (2) is that because the parameters of n wind turbines are different, the parameters cannot be expressed uniformly.
[0172] ...
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