Self-synchronizing voltage source type photovoltaic power generation grid-connected anti-impact technology and device
A photovoltaic power generation, voltage source technology, applied in circuit devices, AC network voltage adjustment, electrical components, etc., can solve the problems of affecting the power quality of the power grid, large inrush current, etc., to maintain a constant, maintain the output voltage, and reduce the impact. Effect
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Embodiment 1
[0062] The invention provides a self-synchronizing voltage source type photovoltaic power generation grid-connected anti-impact method, such as figure 1 Shown: includes:
[0063] Step 1: Obtain the mechanical power output by the prime mover of the governor based on the obtained grid current parameters and the given value of the prime mover output mechanical power;
[0064] Step 2: Calculate the excitation current based on the grid current parameters and the variation law of the synchronous generator reference voltage amplitude, combined with the closed-loop control equation of the excitation controller;
[0065] Step 3: Based on the mechanical power output by the prime mover of the governor, the governor is used to perform a frequency regulation, and based on the excitation current, the excitation regulator is used to perform a voltage regulation, so as to realize the grid-connected impact of photovoltaic power generation.
[0066] Wherein, the mechanical power output by the ...
Embodiment 2
[0116] Based on the same inventive concept, the present invention also provides a self-synchronous voltage source type photovoltaic power generation grid-connected anti-shock device, which is characterized in that it includes: a governor and an excitation controller;
[0117] Both the governor and the excitation controller are located inside the generator and are electrically connected to the generator;
[0118] The governor obtains the mechanical power output by the prime mover of the governor based on the obtained grid current parameters and the given value of the prime mover output mechanical power to perform a frequency modulation;
[0119] The excitation controller performs primary voltage regulation based on the variation law of the grid current parameter and the reference voltage amplitude of the synchronous generator, combined with the excitation current calculated by the closed-loop control equation of the excitation controller.
[0120] Among them, it also includes: ...
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