Charge/discharge management device

A charge/discharge management device provided in a power generation equipment including a power generation system in which a generated power fluctuates depending on weather and a storage battery system and connected to a power system,

• wherein the power generation system includes a power meter that detects the generated power, and
• wherein the storage battery system includes
• a storage battery,
• a battery management unit configured to monitor a state of the storage battery, and
• a power conditioning system having a function of converting AC power outputted by the power generation system to DC power and charging the DC power to the storage battery, and a function of converting the DC power of the storage battery to the AC power and discharging the AC power to the power system,
• the charge/discharge management device comprising
• a charge/discharge command unit configured to determine charge/discharge commands for the power conditioning system on the basis of the generated power detected by the power meter and storage battery information supplied from the battery management unit, such that a change rate per unit time of a power supplied to the power system to a rated power (hereinafter, described as a system supply power change rate) is within a fluctuation range of ±n %, and an SoC (State of Charge) of the storage battery approaches an SoC target value.