Wind turbine virtual inertia control method, system, storage medium and computing device
A technology for wind turbines and virtual inertia, which is applied in wind power generation, electrical components, circuit devices, etc., can solve the problem that wind turbines do not have inertia support capability, and achieve the effect of promoting application, saving costs, and improving grid stability.
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Embodiment 1
[0131] This embodiment discloses a method for controlling virtual inertia of a wind turbine, and the steps are as follows:
[0132] 1) Initialization state:
[0133] After the wind turbine is powered on, self-inspection, when its safety chain is in a normal state, wait for the wind turbine to be connected to the grid to generate electricity, read the data of the wind turbine, and read the variable of the wind turbine: the current demand grid-connected active power P 1 , speed V, torque T 2 and frequency change rate df / dt; the speed V is the real-time mechanical speed of the wind turbine, and the torque T 2 is the torque reference value calculated by the controller of the wind turbine, the power P 1 is the required grid-connected active power value calculated by the controller of the wind turbine, and the frequency change rate df / dt is the instantaneous value of the three-phase voltage Ua, Ub, After Uc, it is calculated by using the phase-locked loop (PLL) of the full-power ...
Embodiment 2
[0180] This embodiment discloses a wind turbine virtual inertia control system, such as figure 1 As shown, it includes an initialization module, a virtual inertia control judgment module, a virtual inertia control target power calculation module, a kinetic energy adjustment value limiting control module, a virtual inertia start control module, a virtual inertia control module and a virtual inertia control exit module.
[0181] The initialization module performs the following operations:
[0182] After the wind turbine is powered on, self-inspection, when its safety chain is in a normal state, wait for the wind turbine to be connected to the grid to generate electricity, read the data of the wind turbine, and read the variable of the wind turbine: the current demand grid-connected active power P 1 , speed V, torque T 2 and frequency change rate df / dt; the speed V is the real-time mechanical speed of the wind turbine, and the torque T 2 is the torque reference value calculated...
Embodiment 3
[0228] This embodiment discloses a storage medium, which stores a program. When the program is executed by a processor, the method for controlling the virtual inertia of a wind turbine set in Embodiment 1 is implemented, specifically as follows:
[0229] 1) Initialization state:
[0230] After the wind turbine is powered on, self-inspection, when its safety chain is in a normal state, wait for the wind turbine to be connected to the grid to generate electricity, read the data of the wind turbine, and read the variable of the wind turbine: the current demand grid-connected active power P 1 , speed V, torque T 2 and frequency change rate df / dt; the speed V is the real-time mechanical speed of the wind turbine, and the torque T 2 is the torque reference value calculated by the controller of the wind turbine, the power P 1is the required grid-connected active power value calculated by the controller of the wind turbine, and the frequency change rate df / dt is the instantaneous va...
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