Smooth switching method for control strategy of voltage source type converter
A control strategy, voltage source technology, applied in the direction of power transmission AC network, circuit devices, electrical components, etc., can solve problems such as the inability to meet the high flexibility and controllability requirements of flexible DC transmission, increase adjustment time, etc., to achieve fast and smooth switching. process, reducing transient impact, and the effect of ingenious and reasonable scheme design
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[0040] see figure 1 , figure 2 , the voltage source converter control strategy referred to in the present invention includes power and reactive power decoupling control and active and reactive power non-decoupling control. Active and reactive decoupling controls include but are not limited to constant active and reactive power control, constant DC voltage and reactive power control, constant active power and AC voltage control, constant DC voltage and AC voltage control, and DC voltage slope control. Active and reactive non-decoupling controls include but are not limited to amplitude and phase control. The control strategy smooth switching method provided by the present invention is applicable when these types of control strategies are switched.
[0041] Specifically, the voltage source converter control strategy smooth switching method provided by the present invention includes the following steps:
[0042] (1) The control system collects actual electrical values, specifi...
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