Anti-sagging control method for photovoltaic inverter in microgrid
A photovoltaic inverter and anti-sag technology, applied in photovoltaic power generation, photovoltaic modules, irreversible DC power input conversion to AC power output, etc., can solve the problem of affecting the power quality of micro-grids and adjusting the voltage of micro-grids without considering photovoltaics The ability of the micro-power supply, the complexity of the type of micro-power supply, etc.
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[0019] The photovoltaic inverter anti-droop control method in the microgrid of the present invention specifically includes the following steps:
[0020] (1) The anti-sag control module 1 collects the frequency f and voltage V of the AC bus of the microgrid, and the given rated frequency f 0 , rated voltage V 0 Make a difference, the difference is multiplied by the set anti-sag coefficient m and n respectively, and then superimposed to the active and reactive power reference command P o , Q 0 , get the active and reactive power command P ref , Q ref ; Among them, active and reactive power reference command P o , Q 0 Obtained via the power coordinating controller section. The anti-droop control is shown in the following formula:
[0021] P ref = P 0 + m ...
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