Abstract: An energy management device in embodiments includes a selection unit and an output unit. The selection unit selects a power supply or load to be controlled in accordance with responsibility, among a plurality of power supplies or loads having different responsibilities, in accordance with a command used to change an amount of consumption of a power supplied from a commercial power supply. The output unit outputs a control signal used to change the amount of consumption of power supplied from the commercial power supply to a control circuit configured to control the power supply or load selected by the selection unit.

Abstract: A storage battery operation plan creation device of an embodiment includes a planner. The planner creates an operation plan of a storage battery on the basis of a graph created on the basis of both a prediction result of each of a power demand and an amount of power generated by a system which uses renewable energy and electricity rate information representing information of an electric power unit price of each time, the graph including a link representing a change of the remaining amount of the storage battery due to charging/discharging of the storage battery at each time and information of a power cost of a destination node of the link caused by the change of the remaining amount.

Abstract: According to an embodiment, energy management system includes client and server. Server includes acquisition unit, estimation unit, calculator and controller. Acquisition unit acquires data concerning electrical equipment in a building including a storage battery from client. Estimation unit estimates energy demand and energy generation amount in building based on the data. Calculator calculates, based on the energy demand and the energy generation amount, operation schedule of the electrical equipment to optimize energy balance in building under a constraint that minimizes dump power to be discarded after storage battery is fully charged. Controller creates control information to control electrical equipment based on operation schedule.

Abstract: According to an embodiment, energy management system includes estimating module, preparing module and controller. Estimating module estimates energy demand of a home, and obtains estimated value of energy demand of home. Estimating module estimates energy generation amount and obtains estimated value of the generation amount. Preparing module prepares discharge strategy, based on the estimated energy demand and generation amount. Discharge strategy maximizes balance obtained by subtracting power purchase loss from power selling profit, by using a push-up effect. The controller controls discharge of the energy storage, based on actual values of the energy demand and the generation amount, and the discharge strategy.

Abstract: According to one embodiment, energy manager includes first estimator, second estimator, creator and controller. First estimator estimates power amount of power generator. Second estimator estimates energy demand. Creator creates schedule of devices based on estimated power amount and energy demand. Controller controls the devices based on the schedule. Second estimator includes storage, extractor and calculator. Storage accumulates load data. Extractor extracts load patterns including different load data. Calculator calculates weight for each of extracted patterns. Creator includes simulator and scheduler. Simulator simulates evaluated value of each schedule based on the pattern and weight. Scheduler creates schedule based on evaluated value.

Abstract: An energy management system (EMS) according to an embodiment has an EMS functional system which estimates at least one parameter value indicating a property of a power conditioner device. The functional system estimates at least one parameter value indicating a property of the power conditioner device on the basis of measured values of the power conditioner device for converting a DC power to an AC power to output the AC power to a power distribution system, the DC power having been inputted from a power generator or the power storage device.

Abstract: An energy management system includes an overcharging-overdischarging risk storage and a generation storage optimization planner. The overcharging-overdischarging risk storage stores an overcharging-overdischarging risk indicating a risk for overcharging-overdischarging to a power storage device of a hybrid power conditioner for converting a DC power to an AC power to output the AC power to a power distribution system, the DC power inputted from a power generator or the power storage device, the hybrid power conditioner converting an AC power into a DC power to output the DC power to the power storage device, the AC power inputted from the power distribution system. The generation storage optimization planner calculates a control plan value for charging-discharging to the power storage device of the hybrid power conditioner on the basis of at least the overcharging-overdischarging risk, a power demand estimation, and a generated-power estimation for the power generator of the hybrid power conditioner.

Abstract: A price information determination device of an embodiment includes a determiner. The determiner determines electric-price-related information to be output for a consumer from a harmonic intensity of electric current or electric power in an electric power system and from an electric power consumption reduction target; wherein the determination is made based on a correlation among the electric-price-related information, the harmonic intensity of electric current or electric power in the electric power system, and electric power consumption in the electric power system.

Abstract: According to an embodiment, an estimation system estimates the power generation amount of a photovoltaic power generation unit. The estimation system includes a calculation unit and a coefficient optimization unit. The calculation unit calculates the estimated value of the power generation amount from the estimated value of a solar irradiance based on a power generation coefficient that converts the solar irradiance into the power generation amount. The coefficient optimization unit adaptively changes the power generation coefficient.

Abstract: According to an embodiment, energy management system manages energy of customer, including a power generation device configured to generate power derived from renewable energy and a battery capable of being charged and discharged. System includes estimator, creator and controller. Estimator estimates energy demand of customer to obtain an estimated demand, and estimates the power generation amount of the power generation device to obtain an estimated power generation amount. Creator creates operation schedule of the battery, which can minimize electricity purchase cost using push up effect of electricity selling profit by discharging the battery, based on estimated demand and power generation amount. Controller controls battery based on operation schedule.

Abstract: According to an embodiment, energy management system manages energy of customer, having vehicle with battery, and a power generator. Energy management system includes estimator, creator, and controller. Estimator estimates demand of customer to obtain demand estimated value, and estimates power production amount of power generator to obtain production amount estimated value. Creator creates discharge strategy capable of maximizing differential between electricity purchase loss and electricity selling profit using push up effect of sold electricity amount by discharging battery under constraint for use of battery. Controller controls discharge of the battery based on actual values of demand, production amount, and discharge strategy.

Abstract: According to an embodiment, energy management system manages energy of customer, including water heater uses renewable energy as heat source. Energy management system includes acquisition unit, estimator, creator and controller. Acquisition unit acquires data concerning energy associated apparatuses including water heater, power generator, battery and energy consuming device from customer. Estimator estimates energy demand and supply of customer based on the data. Creator creates operation schedules based on the estimated demand and supply so as to minimize energy cost of customer under a condition that surplus power to be discarded when the battery is fully charged is minimized. Controller controls energy associated apparatuses based on the operation schedules.

Abstract: According to an embodiment, an energy management system includes estimator, calculator, creator and controller. Estimator estimates energy demand of customer to obtain estimated demand, and estimates power generation amount of renewable power generator to obtain estimated power generation amount. Calculator calculates operation schedule of nonrenewable power generator based on estimated demand and estimated power generation amount. Creator creates strategy maximizes difference between electricity cost loss and profit using push up effect by discharge of battery based on estimated demand and power generation amount, and schedule. Controller controls discharge of battery based on actual value of demand and power generation amount, schedule and strategy.

Abstract: According to an embodiment, energy management system includes estimating module, preparing module and controller. Estimating module estimates energy demand of a home, and obtains estimated value of energy demand of home. Estimating module estimates energy generation amount and obtains estimated value of the generation amount. Preparing module prepares discharge strategy, based on the estimated energy demand and generation amount. Discharge strategy maximizes balance obtained by subtracting power purchase profit and loss from power selling profit, by using a push-up effect. The controller controls discharge of the energy storage, based on actual values of the energy demand and the generation amount, and the discharge strategy.

Abstract: According to an embodiment, energy management system includes client and server. Server includes acquisition unit, estimation unit, calculator and controller. Acquisition unit acquires data concerning electrical equipment in a building including a storage battery from client. Estimation unit estimates energy demand and energy generation amount in building based on the data. Calculator calculates, based on the energy demand and the energy generation amount, operation schedule of the electrical equipment to optimize energy balance in building under a constraint that minimizes dump power to be discarded after storage battery is fully charged. Controller creates control information to control electrical equipment based on operation schedule.

Abstract: According to one embodiment, energy management system includes client and server. Server includes acquisition unit, estimation unit, calculator and controller. Acquisition unit acquires, from the client, data concerning electrical equipment of a customer to which a power grid supplies power. Estimation unit estimates energy demand of electrical equipment based on acquired data. Calculator calculates operation schedule of electrical equipment, which can optimize energy balance of customer, based on the estimated energy demand. Controller transmits control information to control electrical equipment based on calculated operation schedule to client.

Abstract: According to one embodiment, energy manager includes first estimator, second estimator, creator and controller. First estimator estimates power amount of power generator. Second estimator estimates energy demand. Creator creates schedule of devices based on estimated power amount and energy demand. Controller controls the devices based on the schedule. Second estimator includes storage, extractor and calculator. Storage accumulates load data. Extractor extracts load patterns including different load data. Calculator calculates weight for each of extracted patterns. Creator includes simulator and scheduler. Simulator simulates evaluated value of each schedule based on the pattern and weight. Scheduler creates schedule based on evaluated value.

Abstract: A radar detection device of an example of the present invention includes a section which increments a value of a counter when a first difference value between a receiving power value in detecting an edge of a received signal of wireless communication and a receiving power value after a first time elapses since the edge detection is more than a first threshold, and a section which determines whether a second difference value between the value of the counter and a value of the counter before a third time is not lower than a second threshold in each of passage of a second time, and determines that radar is detected when the second difference value is not lower than the second threshold.

Abstract: A wireless communication equipment system which performs wireless communication among one master station and more than one slave station is configured so that each of the slave stations requests the master station to reply acknowledgement frames so as to perform transmission acknowledgement to broadcast frames or multicast frames transmitted from the master station. The master station is configured to decide order of replies of the acknowledgement frames of the slave stations which have requested the replies of the acknowledgement frames and to notify the order of the replies of the acknowledgement frames.

Abstract: When a communication is performed between an access point and a wireless terminal according to the IEEE 802.11 of a wireless LAN communication, a MAC layer block of a wireless communication apparatus used as the access point adds an identifier showing a support of aggregated transmission of a MAC layer management frame or upper layer several frames to a body of a beacon frame.