Abstract: The present application is concerned with a flexible way of operating a wind farm with a plurality of degrading wind turbine components. According to the invention, maintenance scheduling and power production in the wind farm are handled concurrently in a single optimization step. Instead of a serial approach first scheduling maintenance activities and subsequently adapting the power production and/or wind turbine operation the two aspects are optimized together. The wind farm operation takes maintenance aspects into account by adapting life index or health status based on modeled mechanical and electrical stress. Accordingly, the wind farm owner may decide when and how much energy to produce accepting which level of stress to the turbine equipment.

Abstract: A supply and demand adjustment system capable of making supply and demand adjustment of energy while changing an incentive to consumers. The supply and demand adjustment system includes: a supply and demand adjustment device; supply and demand arbitration terminals; and a supply and demand arbitration device. The supply and demand arbitration device determines an incentive target value, makes a request to each of the consumers to reduce usage of the energy within a range of the incentive target value, summarizes a reducible energy amount responsive to this request and given from each of the consumers in replies through the supply and demand arbitration terminals, and transmits the summarized amount to the supply and demand adjustment device. The supply and demand adjustment device and the supply and demand arbitration device make the supply and demand adjustment dynamically while changing the incentive target value.

Abstract: The present invention is an apparatus and method for using aggregated loads from a plurality of distributed energy resources to perform a function at a power distribution feeder. The invention includes a plurality of distributed energy resources, wherein at least one distributed energy resource includes a renewable energy resource, a communication network, a control device, a power distribution feeder coupled to the control device, and an energy storage system coupled to the power distribution feeder. The control device sends a signal to the plurality of distributed energy resources via the communication network. The signal is a request to switch a status of one or more of the distributed energy resources if one or more distributed energy resources is within a predetermined condition. Loads from the one or more of the distributed energy resources that switched status are aggregated to perform a function at the power distribution feeder.

Abstract: A method controls a micro-grid connected to a power distribution system. The method determines parameters of a model of dynamics of the micro-grid using measurements of power flow at a point of common coupling (PCC) of the micro-grid with the power distribution system. The model is exponentially stable on a voltage set-point at the PCC and the method determines, using the parameters of the model, an amount of reactive power required to maintain the voltage at the PCC asymptotically stable on the voltage set-point. Next, the method controls a generator of the micro-grid to produce the amount of reactive power.

Abstract: A vehicle power transmitting and receiving control device, applied to a vehicle including an on-vehicle power storage device that transmits and receives power to and from an external power supply device and a communication unit that performs bidirectional communication to transmit and receive the power, includes a determination unit that determines, when an abnormality occurs in the bidirectional communication performed before transmitting and receiving the power, whether or not to continue the bidirectional communication in accordance with a content of the abnormality.

Abstract: Disclosed herein is a novel method for operating a hydropower reservoir which is an improvement over the existing single-parameter (the current month) USACE Rule Curve approach, the improvement comprising the consideration of a second parameter, namely the water level of the reservoir at the beginning of the month, in the decision-making process for operation of the reservoir.

Abstract: A charge control system creates a charge schedule for charging a power storage device installed on a vehicle. The power storage device is charged from a power supply located outside the vehicle. The vehicle is configured to allow charging of the power storage device from the power supply at a plurality of charging sites. The charge control system includes a learning unit and a creating unit. The learning unit is configured to learn a stay period of the vehicle for each of the charging sites. The creating unit is configured to estimate a departure time of the vehicle when the vehicle stays at any one of the charging sites, and create the charge schedule according to the departure time.

Abstract: A system tool merges different load forecasts for power grid centers. A plurality of load forecast engines are coupled to a load forecast interface and a relational data base that saves load forecast engine data as an input through the load forecast interface. A comprehensive operating plan is coupled to the load forecast engines and the relational database. The comprehensive operating plan is configured to integrate individual load forecasts into a composite load forecast to present a comprehensive, synchronized and harmonized load forecast. A program interface provides access to the composite load forecasting schedule.

Abstract: One exemplary embodiment is directed to an end node that includes functionality to read information stored on or in a segment of physical communication media that is attached to the end node and to communicate the read information over a network (for example, to an aggregation point). Another exemplary embodiment is directed a wall outlet that includes functionality to read information stored on or in a segment of physical communication media connected to it and communicate at least a portion of the information read from the segment of physical communication media to an aggregation point. Another exemplary embodiment is directed a wall outlet that includes a switch and functionality to read information stored on or in a segment of physical communication media connected to it and to communicate at least a portion of the information read from the segment of physical communication media to an aggregation point.

Abstract: An energy event recording apparatus is mounted on each of a plurality of equipment installed at a business facility. When a change in the amount of the flow or stock of energy is detected in the apparatus mounted, each of a plurality of the energy event recording apparatuses records journal information, which associates the amount of change to a debit side item and a credit side item, respectively, and notifies an energy management server of the journal information. The energy management server calculates pieces of journal information conveyed from a plurality of recording apparatuses, respectively, based on the debit side item and the credit side item.

Abstract: Methods and devices are provided for prompting information. The method includes: temperature in a smart socket is acquired; the temperature in the smart socket is compared with a preset temperature threshold value, and it is determined whether power of electric equipment connected with the smart socket is higher than an upper limit of an acceptable power range of the smart socket according to a comparison result; when the power of the electric equipment is determined to be higher than the upper limit of the acceptable power range of the smart socket, alarming information indicating that the power of the electric equipment is excessively high is generated; and the alarming information is pushed to a mobile terminal bound with the smart socket.

Abstract: An air-conditioning control system includes a grouping target apparatus storage unit that stores information about a plurality of air-conditioning apparatuses which are rotation group setting targets; an attribute storage unit that stores an attribute of each of the air-conditioning apparatuses; a group setting rule storage unit that stores a group setting rule for reducing, between the rotation groups, a difference in total power consumption of air-conditioning apparatuses having an identical attribute; a power consumption obtaining unit that obtains information about power consumption values of the air-conditioning apparatuses; a group determination unit that determines rotation groups to which the air-conditioning apparatuses belong in accordance with the power consumption values of the air-conditioning apparatuses and the group setting rule; and a group storage unit that stores grouping information indicating the rotation groups to which the air-conditioning apparatuses belong.

Abstract: An advanced metering infrastructure (AMI) portal system and method for coordinating access to meter data within an AMI data repository. The advanced metering infrastructure (AMI) portal system includes a data repository, a first portal, and a second portal. The data repository is configured to store data related to a plurality of devices within an AMI. The first portal includes a device list. The device list includes a list of at least one of the plurality of devices associated with a customer. The second portal is configured to retrieve the device list from the first portal, and further configured to request meter data for the at least one of the plurality of devices in the device list from the data repository.

Abstract: A method of identifying consumption of a utility by devices in a group of devices, wherein each device in the group of devices has a plurality of device-states and is arranged to consume the utility, the method comprising, for a given measurement period in a supply of the utility to the group of devices: obtaining a time-based vector of total levels of consumption of the utility by the group of devices during the given measurement period; for each of a plurality of group-states, wherein each group-state corresponds to each device in the group of devices being in a corresponding device-state, calculating a score representing a likelihood that the group of devices is in the group-state during the given measurement period, wherein said score is based on a likelihood of the obtained vector occurring based on a multivariate statistical model, corresponding to the group-state, of the total level of consumption of the utility by the group of devices during a measurement period in the supply of the utility to the gro

Abstract: An a remote battery management system, a management device for such a system and a remote battery management method are provided, with which a demand for electrical power of an external power grid is identified and then met with the help of a battery system connected to that power grid.

Abstract: The subject technology provides for identifying a set of similar users. Energy usage data is retrieved for the set of similar users. Next, based at least on the retrieved energy usage data, a comparison of energy usage of each user in the set of similar users is performed. Based on the comparison of energy usage, at least one user is selected from the set of similar users to include in a campaign. A target for energy usage is then identified for the at least one user.

Abstract: A method for characterizing buildings, including retrieving a plurality of baseline energy use data sets for the buildings from a baseline data stores; generating energy use data sets for each of the buildings, each of the energy use data sets comprising energy consumption values along with corresponding time and outside temperature values, where the energy consumption values within each of the sets are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values, and where each of the plurality of lag values is different from other ones of the plurality of lag values; performing a regression analysis on the each of the plurality of energy use data sets to yield corresponding regression model parameters and a corresponding residual; determining a least valued residual from all residuals yielded by the regression engine, the least valued residual indicating a corresponding energy lag for the each of the buildings; and categorizing the buildings into types accord

Abstract: A system (2) for monitoring resource flows at a number of devices (D1, D2, D3) includes a receiving unit (4) which receives data from a number of sensors (S1, S2, S3, S4, S5) configured to detect the flow rate and/or the change in the flow rate at device level, and a number of meters (M1, M2, M3) configured to measure the flow for at least a part of the devices (D1, D2, D3). The system (2) has a calculation module (8) configured to receive information from the sensors (S1, S2, S3, S4, S5) and the meters (M1, M2, M3), and the calculation module (8) includes a mathematical statistical model (38) configured to estimate and/or predict flow of resource and/or performance (e.g., activity) of at least a selection of the devices (D1, D2, D3).

Abstract: An optimization system for a central plant includes a processing circuit configured to receive load prediction data indicating building energy loads and utility rate data indicating a price of one or more resources consumed by equipment of the central plant to serve the building energy loads. The optimization system includes a high level optimization module configured to generate an objective function that expresses a total monetary cost of operating the central plant over the optimization period as a function of the utility rate data and an amount of the one or more resources consumed by multiple groups of the central plant equipment. The optimization system includes a load change penalty module configured to modify the objective function to account for a load change penalty resulting from a change in an amount of the building energy loads assigned to one or more of the groups of central plant equipment.

Abstract: Embodiments provide systems, apparatus and methods for energy management.

Abstract: Provided is a storage battery management device (10) including a price information acquisition unit (11) that acquires power purchasing price information indicating a power purchasing price for each time period of power supplied from an electric power system, a remaining discharge capacity information acquisition unit (12) that acquires remaining discharge capacity information indicating the amount of power that can be discharged to a load from a storage battery, and a discharging schedule generation unit (13) that generates a discharging schedule in which an upper limit of the amount of power discharged from the storage battery is determined for each of a plurality of discharging time periods divided for each unit time, using the power purchasing price information and the remaining discharge capacity information.

Abstract: Embodiments include methods and systems for forecasting electrical demand of a building. Aspects include receiving a weather forecast for an upcoming day and receiving a historical data file comprising historical weather data and historical electrical load data for the building for a plurality of previous days. Aspects also include comparing the historical weather data for each of the plurality of previous days to the forecast and calculating a baseline electrical consumption of the building for the upcoming day based on the comparison.

Abstract: A power flow control system is provided that is capable of improving the reliability of controlling power flow fluctuation and creating wide applicability for systems that control power flow fluctuation. A power-varying device (101) varies the distribution line power amount, which is a value of the power flow that flows in a distribution line (112) to which is connected a plurality of power sources (111) that each generate power. A measurement device (102) measures an index value relating to the total generated power amount, which is the sum total of the amount of power generated by each of the power sources. A calculation device (103) estimates the total generated power amount from the index value, and according to the estimation result, regulates the amount of change in the distribution line power amount that is changed by the power-varying device.

Abstract: Methods for controlling an energy storage device to reduce peak power demand at a site are provided. In one embodiment, load data corresponding to a load in a utility grid-connecting energy generation (EG) system is received. The load data may be sampled at a first predetermined interval, and the EG system may include an energy storage device. A load threshold level is received, and a discharge control signal is generated. The discharge control signal may be generated when the measured load is at or above the load threshold level. The control signal may be applied to the measured load for a second predetermined interval that is longer than the first predetermined interval.

Abstract: System and method for the distributed control and management of a microgrid. The system comprises a plurality of intelligent devices in communication through a network with a data model unit for storing global parameters of the microgrid, an input profile generator module and an exchange manager module. When a global parameter is updated in a data model unit, it is replicated in every data model unit. A first set of intelligent devices is associated and in communication with different power devices of the microgrid, the data model units collecting data monitored by the power device and the input profile generator module iteratively calculating an available range of power that the power device can produce or consume. The exchange manager module iteratively calculates power exchanges between different power devices of the microgrid considering the available ranges of power of the power devices and at least one input parameter.

Abstract: Embodiments provide systems, methods and apparatus for controlling an energy delivery system including providing an energy management system (EMS) having a wind power management (WPM) system and using the WPM system for determining sensitivity values for a plurality of wind farms within the energy delivery system; maximizing wind power generation from the plurality of wind farms within a set of security limits defined based on the sensitivity values; minimizing wind power generation loss from the plurality of wind farms; determining wind farm security-priority groups; minimizing wind power generation production cost based on cost priority of the wind farms in each security-priority group; and minimizing wind power generation production cost based on energy bids for each wind farm in each security-priority group. Numerous other aspects are provided.

Abstract: The present invention discloses a maintenance schedule optimization method for an electric power system including large-scale wind power to build objective function to make it get optimal results, then constrain the objective function, constraint conditions include: constrain according to maintenance natural environment; constrain according to maintenance time of wind power plant; constrain according to maintenance site of wind power plant; constrain according to system reliability at wind power plant; constrain according to maintenance continuity of generator unit. Under the above constraint conditions, the electric power system is modeled with heuristic algorithm according to the above objective function.

Abstract: An energy management device which manages energy usage of at least one electric device, the energy management device including a sensor unit for detecting environment conditions including at least one of temperature, humidity, and luminance of an environment where the electric device is used; a pattern analyzing unit for analyzing an energy usage pattern of a user for using the electric device; and an energy management unit for generating energy management information for managing energy usage of the electric device based on the detected environment conditions and the analyzed energy usage pattern.

Abstract: Embodiments of the present invention provide a train control method for maximizing utilization of regenerative energy. The method mainly comprises: working out a matching error ?T of a current matched pair of trains Mx (i, j) of a station in the current running situation; and comparing the matching error ?T with a preset maximum adjustable error ?Tx of the current matched pair of trains Mx (i, j) of the station and determining a strategy for adjusting train running of the current matched pair of trains Mx (i, j) according to comparison results.

Abstract: A method for dispatching buildings participating in a demand response program including generating data sets for each of the buildings, each having energy consumption values along with corresponding time and outside temperature values, where the energy consumption values within each set are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values, and where each lag value; performing a regression analysis on each set to yield corresponding regression model parameters and a corresponding residual; determining a least valued indicating a corresponding energy lag for each of the buildings; and using outside temperatures, regression model parameters, and energy lags for all of the buildings to estimate a cumulative energy consumption for the buildings, and to predict a dispatch order reception time for a demand response program event.

Abstract: A system and method for energy management for multi customer multi time zone distributed facilities are disclosed. In one embodiment, data associated with the energy management of the multi customer distributed facilities located in different time zones is obtained based on associated energy models by a data acquisition/integration layer. Further, the obtained data for energy management of the multi customer distributed facilities is transformed by a data management layer. Furthermore, control commands are generated using the transformed data and associated one or more pre-defined thresholds and set-points by an energy transaction layer. Also, energy of the multi customer distributed facilities is substantially simultaneously managed using the generated control commands by the energy transaction layer.

Abstract: In an approach for optimizing query executions a processor receives a request to transfer data from a first table to a second table. A processor detects a relationship between the first table and the second table, wherein the relationship is based on a similarity between the first table and the second table. A processor identifies at least a first access path for transferring the data from the first table to the second table. A processor calculates a first cost of transferring the data from the first table to the second table using the first access path based on the similarity between the first table and the second table, wherein the first cost indicates estimated processor usage to transfer the data.

Abstract: Method for controlling a technical system including a power grid, connected to at least one energy supply system. The method ensures that the consumption of electrical energy of the grid is within a given load curve by avoiding or compensating peak loads; including the steps of: a) providing data of the total load occurring in the grid to a load data processor; b) the processor processing said data and determining curves of a plurality of load components of the total load; c) determining future load curves for each component for a time period ahead; d) superimposing the future load curves and determining a future total load curve for the future total load and future peak loads; and e) controlling the technical and/or energy supply systems based on the determined future total load curve to avoid exceeding given load limits and future peak loads or allocate energy required in the future.

Abstract: Systems and methods for managing power on an electric power grid including a server for communicating IP-based messages over a network with distributed power consuming devices and/or power supplying devices, the IP-based messages including information relating to activities by the power consuming devices and/or the power supplying devices; and wherein the information is transformed by the system into settlement grade data corresponding to the activities of the power consuming devices and/or the power supplying devices.

Abstract: A method for balancing electric consumption generated by a plurality of electric loads includes: estimating an absorbed energy (Ek) by the loads in a predetermined time interval, and if a value of the estimation of absorbed energy by the loads is not within an interval defined by a minimum and a maximum consumption threshold, calculating a quantity of energy to be varied in accordance with a difference between the value of the estimation of the absorbed energy and an expected value of energy, determining a strategy including at least an action to be carried out to vary the energy supplied to the single loads, with an aim of reducing the difference between the estimated absorbed energy and the expected value thereof, actuating a scheduling of electric consumption in accordance with a determined strategy.

Abstract: The present application discloses a method for optimized design of an independent micro-grid system, the independent micro-grid system comprising diesel generators, wind powered generators, a photovoltaic array, and an energy storage battery, the optimization method referring specifically to a multi-objective optimization design model based on the independent micro-grid system. In terms of the optimization planning design model, the method takes into account a combined start-up mode for a plurality of diesel generators and a control strategy for coordinating between the energy storage battery and the diesel generators, such that the usage rate of renewable energy in the independent micro-grid is higher, and operations more economical and environmentally friendly. Regarding the stability of the system optimization planning design model, the method takes into account the reserve capacity needed for stability of the independent micro-grid.

Abstract: Certain embodiments include receiving load data from an energy generation (EG) system, where the load data is provided by a load meter, and where the load data corresponds to a predetermined time period. The predetermined time period may be during peak daylight hours (e.g., between 10 A.M. and 2 P.M). The method includes receiving EG data from the EG system, where the EG data corresponds to EG generation by an EG circuit over the predetermined time period, and determining if an inverse relationship exists between the load data and EG data. The method includes determining that the load meter is installed upstream from the EG circuit if an inverse relationship between the load data and EG data exists, and determining that the load mater is installed downstream from the EG circuit if an inverse relationship between the load data and EG data does not exist.

Abstract: An extract, transform and load (ETL) data storage system performs extract, transform and load operations to load target tables with data extracted and transformed data from multiple data sources. Transformations include matching and linking date temporarily stored in intermediate tables by entity across data sources. Data may be organized by entity and time, and analytical records can be generated from the intermediate tables according to variable transforms. The analytical records may be used for predictive analytics.

Abstract: A method for optimizing a fleet of generating assets in which groupings include remotely located power blocks that operate so to collectively generate a fleet output level. The method may include: receiving real-time and historical measured values of operating parameters; for each of the generating assets, deriving a relational expression between the measured values of the process inputs and the measured values of the process outputs; defining a selected operating period; selecting competing operating modes for the fleet; based on the relational expressions and a generating configuration of the competing operating modes, calculating a result set for the operation of the fleet proposed during the selected operating period; defining a cost function; and evaluating each of the result sets pursuant to the cost function and, based thereupon, designating one of the competing operating modes as an optimized operating mode.

Abstract: An iterative framework to optimally integrate various distributed generations (DG) and demand responsive resources (DRR) within a distribution system into transmission market clearing. The concept of distribution aggregated demand and distribution aggregated utility represent a summed distribution level information in consuming electricity that encompasses preferences of the individual DGs and DRRs. This distribution level preference, which is derived based on unbalanced three-phase AC optimal power flow, is bid into the transmission level for optimal market clearing. When the aggregated preferences cannot be obtained, an iterative method enables the transmission and distribution networks to exchange price and demand information. A competitive equilibrium is reached when the method converges to a price-demand coupling point.

Abstract: Systems and methods for managing power on an electric power grid including a server for communicating IP-based messages over a network with distributed power consuming devices and/or power supplying devices, the IP-based messages including information relating to activities by the power consuming devices and/or the power supplying devices; and wherein the information is transformed by the system into settlement grade data corresponding to the activities of the power consuming devices and/or the power supplying devices.

Abstract: The systems and methods disclosed herein relate to management of peak electrical demand as registered by an electrical utility meter of an electrical utility customer. The metered demand level of the customer may be monitored over a first portion of a demand charge measuring period, then a cumulative amount of energy consumed by the customer in the first portion and a projected total energy consumed during the demand charge measuring period may be calculated. Next, an offset energy amount may be determined that is the amount required to bring a net amount of energy consumed by the customer during the demand charge measuring period to lie within a target value range for the demand charge measuring period. A power source such as a battery may then be controlled to provide the offset energy amount to the customer over a second portion of the demand charge measuring period.

Abstract: A method for performing wireless charging control of an electronic device and an associated apparatus are provided, where the method includes: performing at least one detection operation at a direct current (DC) output terminal of a rectifier of the electronic device to generate at least one detection result, wherein two alternating current (AC) input terminals of the rectifier are coupled to two terminals of a power input coil of the electronic device, and the at least one detection operation is not performed at the power input coil; and estimating input power of the power input coil according to the at least one detection result with aid of a set of predetermined data, and sending a packet carrying information corresponding to the estimated input power, for performing wireless charging foreign object detection (FOD), wherein the set of predetermined data is stored in a non-volatile (NV) memory of the electronic device.

Abstract: A system and method for computing at a facility having systems of multiple compute nodes to execute jobs of computing. Power consumption of the facility is managed to within a power band. The power consumption may be adjusted by implementing (e.g., by a power balloon) activities having little or no computational output.

Abstract: The invention relates to a method for detecting a fuel leakage in the fuel distribution system between a fuel control valve and at least one burner of a gas turbine during the operation of the gas turbine. In order to detect a fuel leakage, the fuel consumption is approximated in accordance with the mechanical power of the gas turbine, the fuel amount fed to the fuel distribution system is determined, and the leakage flow is determined from the difference between the fed fuel amount and the fuel consumption. The invention further relates to a gas turbine for performing such a method.

Abstract: A method of initializing a meter reading device that communicates a current meter value of a meter to a central metering facility includes capturing, by a camera, an optical image of the meter that displays meter information and determining an initial meter value from the meter information in the optical image of the meter. The method further includes initializing the meter reading device using the initial meter value.

Abstract: Systems and methods for storing power from distributed generation systems or other loads and sources that affect line voltage are disclosed. In embodiments, a water heater can be powered in a way that absorbs excess power from the grid by heating water when a controller senses excess power generation in the grid. Excess power generation can be sensed by either an increase in line voltage amplitude above a predetermined standard, or an increase in line voltage frequency above a predetermined standard.

Abstract: A method for operating a domestic appliance to reduce consumption of one or more operating resources includes receiving data about a temporal cost profile of the operating resources, having a first time interval with low costs and a second time interval with high costs, comparing a operating time period with the first time interval and determining a point in time for starting operation as a function of a result of the comparison, when the operating time period is longer than the first time interval, determining a temporal program segment with a higher consumption than other program segments based on a temporal consumption profile that describes consumption as a function of time during operation, and determining the point in time for starting the operation such that the program segment with the higher consumption falls within the first time interval.

Abstract: This invention provides a server system in which a plurality of servers are divided into a plurality of groups in accordance with a physical arrangement. The server system includes at least one system power provider that distributes and provides system power to each of the plurality of groups, a battery that corresponds to each of the plurality of groups and provides stored power to at least two servers included in the group, and a controller that controls each of the servers included in one group based on power providable by the system power provider and the battery.

Abstract: The electrical consumption mitigation provided by energy storage systems can be unreliable when a consumption peak lasts long enough to deplete the energy stored and the remainder of the peak is unmitigated. By implementing a waiting period between detecting the peak and discharging the energy storage in which characteristics of the peak are observed, a peak mitigation system can lengthen the effective discharge duration of the energy storage system and prevent unmitigated plateaus from appearing. For example, when a consumption plateau is detected, the system may discharge at a slower rate than when a spike is detected in order to prolong mitigation activities before the conclusion of the plateau. Thus otherwise-incurred demand-related utility charges can be reduced without having to increase the capacity of the mitigation system. In some cases, these processes are performed with respect to the bounds of demand-averaged time periods used to calculate demand charges.