| 摘要 |
PROBLEM TO BE SOLVED: To eliminate inconveniences, such as incapability to make reliable compensation against load fluctuation, which are encountered when an unbalanced load of a distribution system is compensated on the distribution system side. SOLUTION: A consumer to whom power is distributed through a low-voltage distribution line is provided with a storage battery BAT for power storage and a power conditioner PC. The power conditioner is provided with power converting means (CON, TR, FIL, etc.), capable of bidirectionally converting power between the alternating current of the low-voltage distribution line and the storage battery and a control circuit C therefor. Unbalanced line voltage or line current or unbalanced line voltage and line current that may be produced in the low-voltage distribution line is compensated in parallel. Constitution based on a combination of the storage battery and privately owned electrical power facilities, power conversion wherein the power conditioner charges the storage battery with midnight power, constitution wherein power conversion of supplying power from the storage battery or privately owned electrical power facilities to the low-voltage distribution line, and constitution wherein the power conditioner suppresses higher harmonies produced in the low-voltage distribution line are also included. |
