Abstract: The DC-AC inversion of solar power in systems having high voltage, highly varying photovoltaic power sources may be provided to optimize input into a high voltage, high power photovoltaic DC-AC inverter. The inverter may coordinate the conversion of solar power in photovoltaic DC-DC power converters to achieve a desired inverter operating condition. Desired inverter operating conditions may include singular voltage inputs, optimal voltage inputs, inverter sweet spot voltage inputs, and the like. The converters may be coordinated to convert output to optimal input characteristics of the inverter, to control a posterior photovoltaic operating condition, to control the converter for inverter operating conditions, and the like. Output from the inverter may be transferred to a power grid at high power levels with coordinated control possible for various elements.

Abstract: An energy management system and a control method thereof reduces traffic load between the energy management system and display devices by transmitting changes in states of a plurality of home appliances to the display devices in a bundle form, upon occurrence of an event to control an energy level according to variation in electricity price.

Abstract: A wind energy installation control device includes a wind rotor, a generator driven by the wind rotor, a torque control unit configured to control a torque of the generator, and a control system. The control system includes a detector configured to identify a grid dip and an end of the grid dip, a residual torque transmitter configured to provide a set point for a torque of the generator after identification of the grid dip, and an initializer configured to initialize a component of the torque control unit at the set point. Accordingly, upon return of grid power after a grid dip, the vibration behavior of a wind power system can be significantly improved. Overload of a drive train upon return of grid voltage can thus be reduced.

Abstract: An example information processing device includes first and second receiving units, a deciding unit, and first and second transmitting units. The first receiving unit receives adjustment limit information from a plurality of first external devices. The deciding unit determines adjustment rules on the basis of the adjustment limit information. The first transmitting unit transmits the adjustment rules to second and third external devices. The second receiving unit receives determination information from a fourth external device. The second transmitting unit transmits the adjustment rules to the first external devices when integrated schedule information satisfies a condition. When the integrated schedule information does not satisfy the condition, the deciding unit changes the adjustment rules. When the deciding unit has changed the adjustment rules, the first transmitting unit transmits new adjustment rules to the second and third external devices.

Abstract: Systems and methods for distributed energy services management are disclosed. A particular embodiment includes: receiving an input command via a network interface at a site gateway, the input command including information for controlling one or more physical devices at a site; converting, by use of a data processor, the input command to a virtualized command in a common command format; executing, by use of the data processor, one or more executor modules to cause execution of one or more corresponding virtual devices associated with the virtualized command; and using the executed one or more virtual devices to control the corresponding one or more physical devices at the site.

Abstract: A method is provided in one example embodiment and includes communicating a query over a network to a plurality of entities that reside in a domain, the query including a request for data relating to energy use. The query can be generated by one or more computing devices belonging to the domain. A selected one of the computing devices can control power consumption for the entities in the domain. In other embodiments, a discovery protocol (DP) and a link layer discovery protocol (LLDP) is used for transporting events regarding the entities that connect or disconnect from the network. The entities send discovery events over a DP/LLDP protocol, identifying them as part of the domain. In yet other embodiments, the method includes querying a selected one of the entities to determine, if the selected entity moved to a certain energy level, an energy consumption value at the certain energy level.

Abstract: Some embodiments relate to a method a method of using a network which to control multiple power management systems. The method includes using the network to access multiple generator controllers where each generator controller operates an internal combustion engine driven generator that is part of a respective power management system. Each respective power management system includes an automatic transfer switch that is configured to receive power from the internal combustion engine driven generator and a primary power source. In some embodiments, using the network to access multiple generator controllers includes using a server on the network to access multiple generator controllers. The method further includes using the network to exchange communications with the generator controller in each of the multiple power management systems in order permit the generator controllers to exercise the internal combustion driven generators in each of the respective power management systems.

Abstract: Apparatus for providing energy management with automation control features are invented. Power consumption details for building or household can be known as well as the expected power bill in advance. The operation status of specific appliance can also be monitored and controlled. Wireless technology is used as a communication medium with a plurality of appliances which facilitates the management of energy consumption with different applications, like checking the operation status, operating hours and consumption data. An advanced feature of communication with the utility provides power information and instant messaging to users. A consumption target can also be set to economize the electricity bill.

Abstract: A power control system comprises a power accumulating system including a storage cell charged with electric power supplied from a power generating system and supplying a vehicle with electric power, and a control device controlling a cumulative power amount that is an amount of electric power accumulated in the storage cell. The power control system accepts drive schedule data representing whether or not the vehicle is to be used during a predetermined period. The power control system charges the storage cell till the cumulative power stored in the storage cell reaches a first threshold when the drive schedule data represents the vehicle is to be used during the period, or otherwise, it charges the storage cell till the cumulative power stored in the storage cell reaches a second threshold smaller than the first threshold when the drive schedule data represents the vehicle is not to be used during the period.

Abstract: Disclosed herein are an apparatus and method for saving energy in a building. The apparatus for saving energy in a building includes an interface unit, a building information definition unit, an ontology representation unit, and an energy management unit. The interface unit receives the external and internal contexts and characteristics of the building from a building information provision module within the building. The building information definition unit defines the external and internal contexts and characteristics of the building as building information using a specific representation format. The ontology representation unit represents the building information in a form of an ontology model. The energy management unit selects an energy management service based on an ontology model corresponding to the current context and characteristics of the building received via the interface unit, and saves energy in the building based on the selected energy management service.

Abstract: Provided a cluster control system which controls energy storage systems (ESSs) within the cluster and a method for distributing energy among the ESSs in the cluster. The control system includes: ESSs which are provided in a consumption facility or a building and which supply power to respective loads in the facility or building; and a cluster control server distributing energy between the ESSs in the cluster based on an energy level with respect to stored energy amounts of the ESSs. Energy in a cluster in which a plurality of distributed ESSs are grouped is efficiently distributed to a predetermined zone partitioned by the cluster such that the cluster may mange the energy independent of supply of the energy from an external power system.

Abstract: A system for managing a battery in communication with an electrical grid that includes (a) a data collector to collect data representative of an electrical grid; (b) an ASC controller operatively coupled to the data collector and adapted to receive collected data therefrom, the ASC controller comprising a financial strategizer to send instructions based on the collected data; and (c) a battery controller operatively coupled to the ASC controller to receive the instructions transmitted by the ASC controller, the battery controller configured to dictate whether the battery receives electricity from, or transmits electricity to the electrical grid.

Abstract: A computer-implemented platform server and method is provided for energy management operations in a Smart Grid environment. The platform server includes an application module configured to operate any of a plurality of Smart Grid Applications. A consumer-side module is configured for bi-directional communication with a plurality of consumer-side intelligent appliances. An Operations Technology (OT) module is configured for communication with an electrical grid Energy Management System (EMS). A translation module is coupled to, and configured to translate data received from, the application, consumer-side, and OT modules, so that the platform is configured to selectively receive, translate, and transmit data from and among any of said application, consumer-side, and OT modules, to facilitate automated energy management operations in a Smart Grid environment.

Abstract: A system and method for upgrading or otherwise improving performance and/or operation of a transmission grid are provided. The system and method involve identifying transmission grid constraint(s), e.g., transmission bottlenecks or other causes of system congestion, and implementing step(s) to alleviate such constraint(s) on terms and conditions that shift initial capital requirements away from grid owners/operators. The capital-shifting mechanisms generally include installation of and/or access to equipment for monitoring and/or measuring grid performance parameter(s) on a predetermined basis, e.g., in real-time, on a daily basis or the like. A processor is provided that is programmed to calculate a payment stream to be paid to the independent party responsible for effectuating the grid performance upgrade based on measurement of performance parameters.

Abstract: Disclosed are an apparatus and a method for determining a power using mode of an electric device when there is a demand response request. The apparatus for determining a power using mode, includes: a message receiver receiving a demand response request message requesting a reduction in use of power of a smart grid management server; an information receiver receiving status information of the energy storage means; a determinator determining whether power supply from the energy storage means is performed using the status information of the energy storage means when receiving the demand response request message, and determining a power using mode of the electric device according to the determining whether the power supply is performed.

Abstract: An aggregated management system for managing a commodity, such as electricity or gas, is disclosed. The system includes: a plurality of commodity resources; an availability calculator; a resource aggregator, wherein each resource, depending on availability data from the availability calculator, is aggregated to represent an aggregated resource; a resource controller, wherein each commodity resource, depending on availability, is selectively operated by the resource controller in response to a resource instruction; and an interlace to provide information regarding the aggregated resource and receive resource instructions regarding the aggregated resource for the resource controller.

Abstract: An energy consuming device comprises a power consuming feature/function and a controller operatively connected to the power consuming feature/function. The controller is configured to operate the device including the power consuming feature/function in one of a plurality of operating modes, including at least a normal operating mode during an associated off-peak demand period of an associated energy supplying utility and an energy savings mode during an associated peak demand period of the associated energy supplying utility. The controller is configured to provide a user a grace period during the associated peak demand period to allow the user to change the operating mode of the power consuming feature/function from the energy savings mode to another operating mode including the normal operating mode thereby allowing additional use of the power consuming feature/function during the associated peak demand period.

Abstract: A system, method, and apparatus for integrating distributed energy sources, energy storage, and balance of system components into a single device with systems and control for monitoring, measuring, and conserving power generated on the premise. A data processing gateway, hybrid inverter/converter and charge controller provide flexibility in the multi-voltages, output capacities, and photovoltaic array sizes coupled to the apparatus and system. The system and apparatus may be used in various commercial and residential applications. A user may store energy provided by one or more alternate energy sources coupled to an energy storage module. The system provides a compact enclosure that fits within a utility workspace and enclosures that can be mechanically coupled together, placed in parallel or in a series.

Abstract: The present inventors recognized a need to leverage the data from Advanced Metering Systems (AMIs) in the management of electrical outages. To address this and/or other needs, the present inventors devised, among other things, systems, methods, and software that not only intelligently filter and communicate AMI outage data to Outage Management Systems (OMSs), but also facilitate communications between OMSs and multiple types of AMI systems. One exemplary system includes an outage management module that receives AMI outage data in the form of “last gasp” messages from meters and determines whether the OMS is already aware of a power outage associated with those meters. If the OMS is already aware of an outage associated with these meters, the outage management module excludes the outage reports from its communications with the OMS, thereby preserving its capacity to handle new outage information and overcoming a significant obstacle to using AMI data within OMSs.

Abstract: A multi-phase power control switch has multiple power controller channels, each of which includes at least one power controller having a microprocessor. Each of the microprocessors cross communicates with each other of the microprocessors using a data bus.

Abstract: A Power-over-Ethernet (PoE) device (200) for use in a PoE system is described. The PoE device (200) comprising a first PoE port (210) for connecting the device to an upstream PoE device or a central control unit, a second PoE port (220) for connecting the device to a downstream device or PoE device and a control unit (240) for controlling data (335) and/or power communication (400) between the first (210) and second (220) PoE port. The control unit (240) further comprises a first power input terminal (305) connected to the first PoE port (210) to receive electrical power (320) for powering the control unit (240).

Abstract: In embodiments of a stability control system, a computing device includes a device housing that is integrated with a display device, and the device housing tilts for multiple display positions. Pivotable components are mechanically-linked and pivot in coordination to position the device housing in a display position, and sensors detect positioning inputs that are received to re-position the device housing. Clutch mechanisms are implemented to limit and/or resist movement of the pivotable components based on the positioning inputs. A stability controller can be implemented to control the clutch mechanisms based on sensor data from the sensors to position the device housing in a display position.

Abstract: A method for analyzing an electrical power system includes analyzing data representing a signal of interest of the power system, the data containing at least one power system event; and based on the analysis, associating the power system event with a root cause. A computer program product is also provided for carrying out the method.

Abstract: A system for encouraging the use of renewable energy sources and suitable for the conservation of energy resources through the efficient management of energy storage and delivery includes connections to a power source, an energy storage subsystem, and a power grid. The system includes a power routing subsystem coupled to the source and grid, and adapted to operate in a bypass mode, in which energy is transferred from the source to the grid. The system includes a conversion subsystem coupled to the routing and storage subsystems, and switchable in substantially real-time between a storage mode, in which energy is transferred from the routing to the storage subsystem, and a generation mode, in which energy is transferred from the storage to the routing subsystem for delivery to the grid. The system also includes a controller for directing the modes based at least in part on a market factor.

Abstract: An apparatus for controlling peak demand of a resource. The apparatus includes a plurality of devices and a plurality of control nodes. Each of the plurality of devices consumes a portion of the resource when turned on, and the each are capable of performing a corresponding function within an acceptable operational margin by cycling on and off. Each of the plurality of control nodes is coupled to a corresponding one of the plurality of devices, where the plurality of control nodes is coupled together via a demand coordination network, and where the plurality of control nodes coordinates run times for the each of the plurality of devices to reduce the peak demand of the resource, and where one or more of the run times start prior to when otherwise required to maintain corresponding local environments, but which still operate within the acceptable operating margin for the corresponding local environments.

Abstract: There is provided a power control apparatus including an input unit to which attribute information regarding a type of generation of power is input, a determination unit configured to determine the type of generation of the power corresponding to the attribute information according to the attribute information, and a power control unit configured to control use of the power according to a determination result by the determination unit.

Abstract: Provided are a battery state-of-charge (SOC) estimation method and a battery management system which are capable of estimating an SOC using an inexpensive processor and a small-capacity memory. The SOC estimation method includes an SOC table creation step, an SOC calculation step, an SOC comparison step, and a processing step. The battery management system includes a battery, a sensing resistor, a control switch unit, and a processor.

Abstract: A power control system includes a power reduction module operable to reduce power to a connected load, a switching module operable to selectively transfer power directly to the load or to the power reduction module, a harmonic reduction module connected to an output of the power reduction module for reducing signal harmonics from power transferred to the load, a controller linked to the switching module to provide control signals, a resistor coupled between the switching module and the power reduction module, and a resistor voltage monitor coupled between the switching module and the resistor, wherein the resistor voltage monitor measures a voltage across the resistor and sends voltage measurement data to the controller. The power control system is connected to various types of loads.

Abstract: An electronic circuit configured to operate in any of a plurality of charging and heating modes for two batteries, a primary battery and a secondary battery. The electronic circuit includes a plurality of switch and diode pairs in a stacked configuration. The stacks of switch and diode pairs are connected to an inductor, to a plurality of mode control switches, and the two batteries. The mode control switches are used to set the modes, which include a charging mode, a self-heating, a power exchange-heating mode, and a direct power transfer mode.

Abstract: A method for simulating a compressor of a gas turbine may generally include determining a predicted pressure ratio and a predicted mass flow of the compressor based on a model of the gas turbine, monitoring an actual pressure ratio and an actual mass flow of the compressor, determining difference values between at least one of the predicted pressure ratio and the actual pressure ratio and the predicted mass flow and the actual mass flow, modifying the difference values using an error correction system to generate a compressor flow modifier and using the compressor flow modifier to adjust the predicted pressure ratio and the predicted mass flow.

Abstract: The invention relates to a power supply apparatus and also to a power supply arrangement. The power supply apparatus comprises an interface to the load. The power supply apparatus also comprises at least one controllable solid-state switch, for supplying power between the aforementioned load and the power supply apparatus. The power supply apparatus comprises a controller, which is fitted to control the at least one controllable solid-state switch at the selected switching frequency. The switching frequency is selected such that the noise of the load corresponding to the selected switching frequency meets the selection criterion.

Abstract: Provided are a network system and a method of controlling the same. The network system includes an energy supply part including a plurality of power supply sources, an energy metering part communicating with the plurality of power supply sources, the energy metering measuring energy supplied from the plurality of power supply sources, an energy management part receiving energy-related information supplied from the energy supply part, and an energy consumption part consuming power supplied from the energy supply part, the energy consumption part being operable and controllable by the energy management part. At least one power supply source of the plurality of power supply sources is selected according to an order of priority of a power supply, based on energy information related to the plurality of power supply sources. Thus, the power supply source having minimum costs is selected to efficiently manage energy within an intellectual power supply network.

Abstract: An electric power facility control and monitoring system includes: a rule storage having an identifier of a device, an operation status of the device, a numerical value indicating an importance level of the operation status of the device, and a control content for the device set as a rule relating to an event; a diagram storage storing a wiring diagram or layout diagram of the device for each circuit; an automatic selection unit retrieving from the diagram storage the wiring diagram or layout diagram of a section of a bay upon reception of notification of the occurred event, the wiring diagram or layout diagram including an identifier of a device included in a rule in the rule storage matching to a content of the event notification; and a display control unit outputting to a monitor the wiring diagram or layout diagram retrieved by the automatic selection unit.

Abstract: A system and method of dynamic distributed control with network topology discovery in an isolated distribution grid is provided. Source modules connect to AC generators and output high voltage DC power on ports. Load modules receive the high voltage DC power on connected ports and convert the DC power to AC power. Loads are connected to AC outlets on load modules. A source module discovers the connected network topology through a series of states following the reading of a configuration file. Each module has a microprocessor. Each microprocessor runs control algorithms using its adjacency map as input. Respective adjacency maps are monitored, compared, and amended as needed to maintain consistency across all adjacency maps, thus ensuring consistent distributed control of the power distribution grid.

Abstract: Systems and methods are described herein for managing the operations of a plurality of microgrid modules. A microgrid module includes transformers and/or power converters necessary for modifying the input AC or DC power sources to meet the required characteristics of the output power. The microgrid module further comprises a control software module and a power router software module. The control software module receives data from sensors in the microgrid module and controls the flow of power with controllable elements. The power router software module controls the operation of the power router. The power router can detect changes in demand for power within the microgrid module or from other microgrid modules. The power router can adjust the flow of power between the microgrid modules in response to changes in the supply of power to the microgrid module and changes in the demand for power from the microgrid module.

Abstract: A method and associated system for managing power within an aircraft electrical system, the aircraft having a generator driven by a gas turbine engine for the supply of electrical power to the system, wherein the generator and electrical system are connected to a common energy store. The method includes determining predicted electrical energy demands of the system and predicted thrust demands for the gas turbine engine over at least a portion of a flight. A plurality of time periods within at least a portion of the flight are defined and a desired rate of charge of the energy store for each time period is determined based upon the predicted thrust and electrical energy demands over the time period. The rate of charge of the energy store is controlled during the flight in accordance with the determined desired rate of charge for each time period.

Abstract: A printing apparatus comprises: a storage unit configured to store a power usage of each of one or more other printing apparatuses connected to a power supply system to which the printing apparatus is connected; and a print execution controller. The print execution controller is configured to: keep track of which of the other printing apparatuses are in printing operation; calculate, upon receipt of a print instruction from any of the external apparatuses, a total of power usages of the other printing apparatuses that are in printing operations; inhibit the printing apparatus from printing when an expected power exceeds a predetermined allowable value, the expected power is a sum of the calculated total of power usages and the power usage of the printing apparatus during the printing operation; and allow the printing apparatus to print when the expected power is equal to or below the predetermined allowable value.

Abstract: An intelligent electronic device having an audible and visual interface for providing audible and visual instructions to a user in an event of an alarm or trouble indication in the electrical power system. The intelligent electronic device includes at least one sensor configured for measuring at least one power parameter of an electrical circuit and generating at least one analog signal indicative of the at least one power parameter; at least one digital to analog converter for receiving the at least one analog signal and converting the at least one analog signal to at least one digital signal; a processor configured for receiving the at least one digital signal and detecting at least one event occurring in the electrical circuit; and an interface configured for providing instructions associated to the at least one detected event. The instructions may be in the form of text, audio and/or video.

Abstract: An outage schedule management apparatus and a method are provided, wherein a topology change is executed in response to an outage schedule set up by a user input, and a validity determination is executed to system operation standard to approve an outage.

Abstract: The invention relates to a method for optimizing the supply of energy, over a time interval/of duration D, to an installation equipped with N energy distribution devices operating in all-or-nothing mode and by duration modulation, an operation duration ?i being allocated to each of the N energy distribution devices over the time interval/by a command/control system of the installation. According to the method: a schedule is defined over the time interval/by means of the time division of the set of operating sequences of the N energy distribution devices (B1,B2 . . .

Abstract: An article of manufacture for an energy system that has one or more tangible, machine-readable media. The machine-readable media have processor-executable instructions encoded thereon. The media includes instructions to receive status data from a network management system. The status data corresponds to a device in the energy system. The media also includes instructions to provide the status data to an asset information system. The media includes instructions to receive asset status data from the asset information system. The media also includes instructions to provide the asset status data to a utility management system.

Abstract: A system for tuning the operation of a gas turbine is provided based on measuring operational parameters of the turbine and directing adjustment of operational controls for various operational elements of the turbine. A controller is provided for communicating with sensors and controls within the system. The controller receiving operational data from the sensors and comparing the data to stored operational standards to determining if turbine operation conforms to the standards. The controller then communicates selected adjustment in an operational parameter of the turbine. The controller then receives additional operational data from the sensors to determine if an additional adjustment is desired or is adjustment is desired of a further selected operational parameter.

Abstract: A voltage control and conservation (VCC) system is provided, which includes three subsystems, including an energy delivery (ED) system, an energy control (EC) system and an energy regulation (ER) system. The VCC system is configured to monitor energy usage at the ED system and determine one or more energy delivery parameters at the EC system. The EC system may then provide the one or more energy delivery parameters to the ER system to adjust the energy delivered to a plurality of users for maximum energy conservation.

Abstract: A method for managing the charging of an electric vehicle. The method includes receiving a request for a charge transfer for an electric vehicle over a network link between an electric vehicle charging station and a cloud server. The network link has a mobile device disposed between the electrical vehicle charging station and the cloud server for facilitating communication between the charging station and the cloud server.

Abstract: System and method include precisely modeling of a facility's energy usage over time based on historic data, and precisely predicting or measuring its actual, reduced energy usage over time after a redesign, retrofit, or renovation, or other positive change to the facility. The energy cost savings, whether over a time point of view (POV) of predicted, real-time, or historic, are creditable to the intervening remediation or renovation of the facility's energy footprint. In accordance with one embodiment, multiple-variable inputs are modeled using arithmetic regression and steepest-descent convergence arithmetic solutions based in large part on building-science (construction) data versus outside average temperature (t) that simplifies the modeling and measurements. Additionality is thus addressed along with a system and method that is more accurate, more repeatable, more reliable, and thus more credible and more readily monetized.

Abstract: A system for collaborative energy management and control in a building, including an energy management controller, one or more occupant HMIs that supports two-way communication between building occupants and a facility manager, and between building occupants and the energy management controller, and a facility manager HMI that supports two-way communication between the facility manager and the building occupants, and between the facility manager and the energy management controller, in which the occupant HMI allows building occupants to provide temperature preferences to the facility manager and the energy management controller, and the facility manager HMI allows the facility manager to configure an energy policy for the building as a set of rules and to view occupants' aggregated temperature preferences, and the energy management controller determines an optimum temperature range that resolves conflicting occupant temperature preferences and occupant temperature preferences that conflict with the facility m

Abstract: A hierarchical architecture for optimizing hybrid energy storage system performance includes a physics layer which provides at least two energy storage sources, wherein each source generates a source signal. The architecture further includes a technology control layer that receives the source signals into a corresponding controller, and where each controller has a parameter table. A technology control interface signal is generated by the controller and the parameter table working together. A storage network layer receives the technology control interface signals into a storage system optimization controller to manage operation of the different energy sources.

Abstract: In an energy automation system for an electrical energy supply network, a local data processing device executes a program with functions for controlling and/or monitoring the energy supply network. The processing device is connected to a plurality of automation devices and to at least one remote data storage device, in which at least one program component for the program is stored. The start phase of the program is shortened by using a copy of the program component stored locally. When the program execution starts, the local data processing device checks if the copy of the local program component matches the current program component stored in the remote data storage device. The local data processing device executes the program with the copy of the program component if there is a match. Otherwise, it retrieves the program component from the remote memory and executes the program using the retrieved program component.

Abstract: A method for load control in an electrical distribution system using energy usage profiles based on temporal measurements. A load control unit (10) installed at a customer site profiles equipment (E1-En) directly connected to the load control unit and remotely located equipment (RE1-REn) wirelessly connected to the load control unit using measurements of time rather than energy usage. This reduces the cost and complexity of the load control unit. Profiling is done for individual pieces of load controlled equipment rather than for the site as a whole. This improves data resolution. The load control unit controls the load only when the equipment is powered, and adaptively synchronizes load shedding during this time, so to improve local load control performance. Termination of a load control event results in gradual reduction in load shedding so to control the inrush of demand seen by the distribution system.

Abstract: An electric power leveling controller includes an information acquisition unit that acquires information of electric energy consumption from a power consuming device consuming electric energy from the power source and electric energy charged into a power storage device, a storage unit that stores a specific threshold value for each power storage device, and a control unit that causes a first power consuming device to be power-supplied by the power source, causing the power storage device corresponding to the first power consuming device to be charged with a difference between the specific threshold value and the electric energy consumption, causing the power source to supply to a second power consuming device electric energy corresponding to the specific threshold, and causing the power storage device corresponding to the second power consuming device to discharge to the second power consuming device the difference between the electric energy consumption and the specific threshold value.