Photovoltaic power generation system with storage batteries
First Claim
1. A photovoltaic power generation system with storage batteries comprising:
- a solar cell device;
an inverter which converts a direct current generated by the solar cell device into an alternating current;
a device for supplying the alternating current to a power consumption section;
storage batteries which store electric power;
a switch control device for switching to output electric power from the solar cell device to the storage batteries or the inverter;
a power control device for controlling discharge of power stored in the storage batteries in accordance with a certain time period of high power demand represented by a fluctuation curve of power demand and supplying power from the storage batteries along with power generated by the solar cell device to the inverter
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Abstract
An object of the present invention is to provide a system capable of reducing optimally peak demand for power by using small capacity storage batteries.
The present invention was made to provide a photovoltaic power generation system which links with a utility power system, feeds electric power generated by a solar cell device to an inverter in order to convert the electric power into alternating current, and supplies the alternating current to a power consumption section. The photovoltaic power generation system comprises storage batteries for storing electric power and a switch control device for switching to output electric power from the solar cell device to the storage batteries or the inverter. Also the photovoltaic power generation system controls discharge of the electric power stored in the storage batteries with reference to a specific period of high power demand represented by a fluctuation curve of power demand, and supplies the electric power from the storage batteries along with generation power from the solar cell device to the inverter.
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Citations
15 Claims
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1. A photovoltaic power generation system with storage batteries comprising:
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a solar cell device;
an inverter which converts a direct current generated by the solar cell device into an alternating current;
a device for supplying the alternating current to a power consumption section;
storage batteries which store electric power;
a switch control device for switching to output electric power from the solar cell device to the storage batteries or the inverter;
a power control device for controlling discharge of power stored in the storage batteries in accordance with a certain time period of high power demand represented by a fluctuation curve of power demand and supplying power from the storage batteries along with power generated by the solar cell device to the inverter - View Dependent Claims (2, 3, 4, 5, 6)
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7. A photovoltaic power generation system with storage batteries comprising:
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a solar cell device;
an inverter which converts a direct current generated by the solar cell device into an alternating current;
a device for supplying the alternating current, which converted by the inverter, to a power consumption section, and which links with a utility power system;
storage batteries which store electric power;
a switch control device for switching to output electric power from the solar cell device to the storage batteries or the inverter;
a charging control device for controlling the storage battery to charge with electric power selected either from electric power generated by a solar cell device at the off-peak period of power demand after sunrise, electric power supplied from the utility power system during the night, or both;
a power control device for controlling discharge of power stored in the storage batteries in accordance with a certain time period of high power demand represented by a fluctuation curve of power demand and supplying power from the storage batteries along with power generated by the solar cell device to the inverter. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification