Panasonic Intellectual Property Management Co., Ltd.

Kenji Nakakita

Kiyotaka Takehara

Akira Baba

Hitoshi Nomura

Shinpei Hibiya

Fumitaka Ogasawara

Akiko Takamiya

Yasuhiro Yanagi

Rikiya Masuda

Erina Nagae

Yoshitaka Tezuka

Akiko Okamura

The power management system includes: a power management device for managing power to be used by multiple power loads; and a large power-using power load. The large power-using power load is defined as a power load which shows a power consumption larger than a difference between allowable power and an upper limit power smaller than the allowable power when operating at a maximum power consumption. The power management device calculates remaining available power available for the large power-using power load, from the total power consumption of the multiple power loads and the upper limit power, and notifies the remaining available power to the large power-using power load. The large power-using power load starts to operate under a condition that its power consumption is equal to or less than the remaining available power notified by the power management device.

Power management system, power management device, and large power-using power load

A controller includes a request acquisition unit that receives an operation permission request from a device, a calculation unit that calculates margin electric power derived from measurement by a measurement unit and an upper limit electric power, and a suppression unit that instructs the device to lower electric power consumption. When the margin electric power is less than the required electric power, the controller suppresses electric power consumption in devices in lower priority order stored in a priority storage unit within the suppression unit, such that electric power consumption increase in the management area may remain within the margin electric power. Then the controller issues the requesting device permission-or-denial for the operation, from the calculation unit.

Power management device and power management system

Disclosed is an electric power supply system which has: a common power source which stores and supplies a power via a local power grid; and a distributed power source which supplies a power to buildings and a surplus to the common power source. The electric power supply system further includes a first power meter measuring the amount of power supplied from a commercial power source, a second power meter measuring the amount of power received from and supplied to the common power source via the local power grid, and a distribution control device which distributes a power from the common power source to the area based on the amounts of power as measured by the first power meter and the second power meter.

Electric power supply system

A demand measurement unit measures load demand power and a power generation measurement unit measures solar cell output power. A threshold storage unit stores a discharge control threshold for determining whether to discharge remaining storage cell power. When demand power exceeds generated power, a command unit controls storage cell discharge by comparing remaining storage cell power with the discharge control threshold and transmits a control command to a power conditioner. If the remaining storage cell power exceeds the discharge control threshold, then the command unit commands storage cell discharge. A threshold setting unit sets the discharge control threshold, and updates the discharge control threshold when that value changes.

Power supply system

A controller installed at each consumer side comprises: a power generation amount acquisition unit acquiring the amount of electricity that has been generated in a solar cell; a power selling amount acquisition unit acquiring the amount of electricity for sale that has been allowed to flow into an electric power system by reverse power flow, among the electricity generated in the solar cell; and a power selling suppression control unit configured to set a threshold value for the amount of the electricity for sale, as proportional to the amount of the generated electricity acquired by the power generation amount acquisition unit, and configured to suppress the reverse power flow into the electric power system so that the amount of the electricity for sale is set to the threshold value or less.

Electric power control device and electric power control system using same

An object is to allow intuitively understand whether display information displayed on a display device indicates favorable state or unfavorable state for a user. An acquisition unitacquires energy-related information. A communication unitis connected to a display deviceand an operation device. Display information to be displayed on the display devicehas a stratum structure including first display information as a top tier and second display information, the first display information including at least two categories which express the favorability about the energy-related information, the second display information including plural kinds of information so that the lower tier includes more detailed information. An information generation unittransmits second display information to the display deviceupon receiving a request from the operation devicewhen first display information is displayed on the display device

Growing community of inventors

Osaka, Japan

Kenji Nakakita