| 摘要 |
PROBLEM TO BE SOLVED: To optimize voltage of a distribution line to which a distributed power supply is interconnected to enhance the stability in power supply.SOLUTION: A distributed power supply system according to an embodiment is a system in which a distributed power supply (a photovoltaic power generator) is interconnected to a distribution line via a smart meter 3. A distribution automation system 1 collects a voltage value of a node to which the distributed power supply is interconnected in the distribution line and a voltage value of a transformer substation for distribution, and collects a power amount to be transmitted to the distribution line, which is measured by the smart meter 3, via a meter data management system 2. When the voltage value of the node is greater than a voltage target value, the distribution automation system 1 calculates a reactive power control amount by using the voltage value of the node, the voltage value of the transformer substation for distribution, the voltage target value, the power amount acquired by the smart meter 3, and a distribution line impedance of the node, and transmits the amount obtained by distributing the reactive power control amount to the distributed power supply to the smart meter 3 via the meter data management system 2 as a command value to control a reactive power of a photovoltaic inverter 4. |
