Abstract: A storage battery system connected to a power system includes: a storage battery; a BMU which monitors a state of the storage battery; a PCS which converts AC power of the power system into DC power to charge the storage battery with the DC power and converts DC power of the storage battery into AC power to discharge the AC power to the power system; and a control device. The control device receives a charge/discharge request from an EMS and storage battery information supplied from the BMU and controls the PCS based on the charge/discharge request and the storage battery information. The control device includes a charge/discharge command unit which calculates chargeable/dischargeable electric power based on the storage battery information and determines a charge/discharge command to the PCS based on the charge/discharge request by using the chargeable/dischargeable electric power as a constraint condition.

Abstract: A storage battery system connected to a power system includes: a storage battery; a BMU which monitors a state of the storage battery with a first sensor; a PCS which charges the storage battery and discharges from the storage battery with reference to an output value of a second sensor similar in type to the first sensor; and a control device. The control device receives a charge/discharge request and storage battery information supplied from the BMU and controls the PCS based on the charge/discharge request and the storage battery information. An abnormality detection unit of the control device acquires the output value of the second sensor from the PCS, and detects abnormality of any sensor as a result of comparison between the output value of the second sensor and an output value of the first sensor included in the storage battery information.

Abstract: A storage battery system having enhanced safety of the interlock processing. A storage battery system connected to a power system and operative based on a charge/discharge request from an EMS includes: a battery management unit configured to monitor a state of the storage battery; a power conditioning system; and a control device configured to receive the charge/discharge request and storage battery information supplied from the battery management unit and to control the power conditioning system based on the charge/discharge request and the storage battery information. The control device further includes an interlock processing unit configured to perform interlock processing upon detection of abnormality of the storage battery system, the interlock processing corresponding to a content of the detected abnormality.

Abstract: A storage battery system connected to a power system and operative based on a charge/discharge request from an EMS includes: a battery management unit configured to monitor a state of the storage battery; a power conditioning system; a control device configured to receive the charge/discharge request and storage battery information supplied from the battery management unit and to control the power conditioning system based thereon; an on-site monitoring and operating device directly connected to the control device, the on-site monitoring and operating device including a display unit configured to display the storage battery information and an operation unit configured to enable an on-site charge/discharge request to the AC-DC converter to be input. The control device includes an on-site request adjustment unit configured to receive the on-site charge/discharge request and the storage battery information and to determine a charge/discharge command to the power conditioning system based thereon.

Abstract: In an electrical storage device management system, a control part monitors the temperatures of electrical storage cells. In electrical storage systems that are in a charging/discharging operating state, if the temperature of any of the electrical storage cells has reached a first threshold temperature, the control part switches an electrical storage system that includes this electrical storage cell to a non-charging/discharging state. The control part also switches one of the electrical storage systems that is in the non-charging/discharging state, to the charging/discharging operating state.

Abstract: In an electrical storage device management system, a control part monitors the temperatures of electrical storage cells. In electrical storage systems that are in a charging/discharging operating state, if the temperature of any of the electrical storage cells has reached a first threshold temperature, the control part switches an electrical storage system that includes this electrical storage cell to a non-charging/discharging state. The control part also switches one of the electrical storage systems that is in the non-charging/discharging state, to the charging/discharging operating state.

Abstract: A peak cut system which can reduce the running cost of a power-generating device even when a peak cut process is carried out. In a peak cut system, a control unit executes such a control procedure that a peak cut process is first carried out only by the discharge from a power storage device and the power generation by a power-generating device is carried out only when a predetermined amount of peak cut cannot be achieved only by the discharge from the power storage device.

Abstract: A heat transfer device that allows high-accuracy temperature management of an entire piping system. The heat transfer device transferring heat to the piping system through which a fluid flows includes: a high heat conductive heat transfer block surrounding the piping system; a heat pipe embedded in the heat transfer block along an extension direction of the piping system; and a heater applying heat to the heat pipe. The heat transfer block includes a plurality of divided blocks dividable along the extension direction of the piping system.