Power storage system, apparatus and method for controlling charge and discharge, and program
AssigneeNEC Corporation
InventorHideyuki HASEGAWA
Life of this patent
Estimating the term…
Abstract
The charging and discharging control apparatus is an apparatus that controls charging and discharging of a power storage apparatus. The power storage apparatus is connected to an AC power line and is connectable to a specific load without involving the AC power line. The AC power line is connected to a power system, is connected to a direct-current power line through a DC/AC conversion apparatus (PV-PCS), and is connectable to a general load. The charging and discharging control apparatus includes an acquisition unit that acquires information on a direction of a current in the AC power line, and a control unit that supplies electric power to the power storage apparatus when a current is flowing from the AC power line to the power system.
Claims21
A power storage system comprising:
- a power storage unit;
- and
- a control unit that controls charging and discharging of the power storage unit,
- wherein the power storage unit is connected to an AC power line and is capable of supplying electric power to a specific load without involving the AC power line,
- the AC power line is connected to a power system, is connected to a DC power generation apparatus through a DC/AC conversion apparatus, and is connectable to a general load, and
- the control unit supplies electric power to the power storage unit when a current is flowing from the AC power line to the power system.
A charging and discharging control apparatus that controls charging and discharging of a power storage apparatus,
- the power storage apparatus being connected to an AC power line, and
- the AC power line being connected to a power system, being connected to a DC power generation apparatus through a DC/AC conversion apparatus, and being connectable to a load,
- the charging and discharging control apparatus comprising:
- an acquisition unit that acquires information on a direction of a current in the AC power line;
- and
- a control unit that supplies electric power to the power storage apparatus when a current is flowing from the AC power line to the power system.
A control method performed by a charging and discharging control apparatus, the charging and discharging control apparatus being connected to a power storage apparatus capable of charging electricity generated by a DC power generation apparatus,
- the power storage apparatus being connected to an AC power line, and being capable of supplying electric power to a specific load without involving the AC power line, and
- the AC power line being connected to a power system, being connected to the DC power generation apparatus through a DC/AC conversion apparatus, and being connectable to a general load,
- the control method performed by the charging and discharging control apparatus comprising
- supplying electric power to the power storage apparatus when a current is flowing from the AC power line to the power system.
21-28. (canceled)
Dependencies are inferred from the claim text.