| CPC H02J 3/144 (2020.01) [H02J 3/46 (2013.01); H02J 2203/10 (2020.01)] | 14 Claims |
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1. An output distribution method of a power supplying system which includes a plurality of power conditioning systems (PCSs), the output distribution method comprising:
a required output power comparing operation of comparing required output power of a power supplying system with a reference value;
a unit operation PCS power allocating operation of, when the required output power exceeds the reference value, equally allocating the required output power to the plurality of PCSs and operating the plurality of PCSs in a first mode;
a maximum power-operated PCS power allocating operation of, when the required output power does not exceed the reference value, assigning one or more maximum power-operated PCSs to be operated with maximum operation ratio power based on a maximum operation ratio and a minimum operation ratio;
a residual power-operated PCS power allocating operation of, when residual power, which is not allocated in the maximum power-operated PCS power allocating operation, exceeds minimum operation ratio power, assigning a residual power-operated PCS to be operated with the residual power and operating the residual power-operated PCS in a second mode together with the one or more maximum power-operated PCSs; and
a maximum power-operated PCS power reallocating operation of, when the residual power, which is not allocated in the maximum power-operated PCS power allocating operation, does not exceed the minimum operation ratio power, equally dividing and reallocating the required output power to the maximum power-operated PCSs assigned in the maximum power-operated PCS power allocating operation and operating the maximum power-operated PCSs in a third mode,
wherein the maximum operation ratio and the minimum operation ratio are set based on a predicted power generation value of the power supplying system, a power market trend, and a reference set value, and
wherein the power market trend is a power market price.
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