Abstract: A computer system provides online state estimation (SE) and topology identification (TI) using advanced metering infrastructure (AMI) measurements in a distribution network. The computer system obtains input data including the AMI measurements, a network configuration, and line parameters; solves an SE and TI problem formulated from the input data and power equations of the distribution network; and periodically updates states and topology of the distribution network during power system operation. To solve the SE and TI problem, the computer system constructs a mixed-integer convex approximation programming (MICP) model to obtain an initial topology; generates neighboring spanning trees according to the MICP model and the initial topology; evaluates performance of each neighboring spanning tree with a matching index that is an indication of power flow performance; and chooses a tree topology of a neighboring spanning tree having a minimum matching index as a final network topology of the distribution network.

Abstract: A method of trading electrical energy is provided. The method comprises a smart agent receiving state data affecting electricity usage within an electrical power grid over a specified time period and forecasting, with a supply/demand model, supply and demand for electricity within the power grid according to the state data. The smart agent uses a reinforced learning neural network to calculate a price for electricity according the state data and forecasted supply and demand. The smart agent submits an order to a matching engine to buy or sell electricity on the power grid at the calculated price according to specified market rules. The smart engine receives an acknowledgment from the matching engine if the order is matched to another agent on the power grid or a rejection from the matching engine if the order is not matched to another agent.

Abstract: A solar power generation control device, controlling a solar power generation system configured to charge a power storage device of a vehicle with electric power generated by a solar cell provided in the vehicle, includes: an acquisition unit that acquires environmental information on weather or a planimetric feature around the vehicle; a prediction unit that predicts a change in solar radiation state of the vehicle based on the environmental information acquired by the acquisition unit and a moving state of the vehicle; and a control unit that controls an operation mode of the solar power generation system, including a first mode, in which the power storage device is charged with electric power generated by the solar cell, and a second mode, in which power consumption of the solar power generation system is lower than in the first mode, based on a prediction result of the prediction unit.

Abstract: Systems and methods for improving load energy forecasting in the presence of distributed energy resources in which a revised load forecast is calculated based on forecasted meteorological conditions data, forecasted wind and solar energy, forecasted load data, time data and time-series variables determined based on an analysis of the historical data. In exemplary embodiments, the revised load forecast is provided to energy management computer systems to enable appropriate levels of generation of conventional and renewable energy generation within the electric power grid.

Abstract: Provided is a control module of a converter, in particular a power converter of a wind power installation, which is configured to control the converter in such a way that the converter emulates a behavior of a synchronous machine, comprising an, in particular internal, control loop which has an, in particular adjustable, virtual admittance by means of which the converter is controlled in order to emulate the behavior of the synchronous machine.

Abstract: The novel use of separate programs to control a parallel execution of a plurality of large scale linear program solvers executing sequentially on separate cores is disclosed. An embodiment detailing the system's use in optimizing a utility company's assets is also disclosed. As upgrades or better programs become available, in some embodiments each program in the system can be replaced without affecting the structure of the other programs. In some embodiments, the use of cloud based architecture allows for improved data collection and system execution as all that is needed to process data at a faster speed is to “rent” the additional physical or virtual cores from the provider.

Abstract: When a baseline is in a certain state, a server executes a process including: a step of calculating an amount of power exchanged between a battery and a power grid during the first charging control; a step of calculating an amount of power exchanged between the battery and the power grid during the second charging control; a step of calculating an amount of power exchanged between the battery and the power grid during the first power feeding control; a step of calculating an amount of power exchanged between the battery and the power grid during the second power feeding control; and a step of setting a calibration line for the amount of power.

Abstract: A power trading management apparatus receives power supply application data including the amount of supplied power and a supply period from a supply-side computer, and receives power demand application data including the amount of requested power and a request period from a demand-side computer, determines whether or not a first trading condition in which the supply period is a period earlier than the request period is satisfied, decides the amount of transmitted power for a power demand apparatus based on an amount of power of the amount of supplied power or the amount of requested power when the first trading condition is satisfied, and stores the amount of supplied power in a power storage and discharge apparatus from a power supply apparatus in the supply period and discharges the amount of transmitted power decided by the decision processing to the power demand apparatus from the power storage and discharge apparatus.

Abstract: A distributed energy management system includes a photovoltaic (PV) source, and a plurality of controllable loads in communication with the PV source. The plurality of controllable loads include a first controllable load including a first interactive plug associated with a first connected state timer and a first disconnected state timer, and a second controllable load including a second interactive plug associated with a second connected state timer and a second disconnected state timer. The PV source is configured to determine a maximum PV power, determine a difference between the maximum PV power and a current PV power, responsive to determining that the difference is less than or equal to a threshold power, set the reference AC voltage as a first voltage, and responsive to determining that the difference is greater than the threshold power, set the reference AC voltage as a second voltage greater than the first voltage.

Abstract: The present invention provides a power trading system that executes power trading between a plurality of apparatuses, wherein at least one apparatus of the plurality of apparatuses includes a management unit configured to manage electric energy of a battery, and the management unit manages the electric energy of the battery by discrimination between electric energy derived from exhaustible energy and electric energy derived from renewable energy.

Abstract: A method for managing an energy generation system is disclosed. The system includes a cluster of power generators connected by a connectivity network. Each power generator includes an inverter having a respective controller, and at least a data set available to the controller for controlling the respective power generator. Each inverter transmits through said connectivity network, to the other inverters of the cluster, information concerning said data set available to it, said information being sufficient to check whether the data sets available to each inverter are aligned. Each inverter receives, through said connectivity network, information concerning the data set available to other inverters of the cluster and checks whether the data set available to it is aligned with the data sets available to the other inverters of the cluster.

Abstract: An energy control system (ECS) for controlling an energy storage system (ESS's) that includes energy storage devices(s) or an energy storage combination (ESDC's) including?1 of the energy storage devices and ?1 of the energy storage combinations. A power conversion system is coupled to an output of the ESDC, and a transformer is coupled to an output of the power conversion system. The ECS includes an ECS server and an ESS adapter configured for providing an interface between ECS server and the ESS. The ECS server is configured for reading status data from the ESS and submitting schedules including selected charging and discharging times to the ESS, monitoring or displaying a variance between an expected performance of the ESS based on the schedules and an actual ESS performance, and responsive to the variance being determined to be above a predetermined threshold, sending an update of the schedules to the ESS.

Abstract: The disclosure provides a method and a system for dispatching a multi-region power system. The method includes: obtaining, by each regional system operator, basic operating parameters of the regional power system; establishing, by each regional system operator, a dispatching model of the regional power system based on the basic operating parameters; identifying, by each regional system operator, an aggregation model of the regional power system based on the dispatching model of the regional power system; reporting, by each regional system operator, the aggregation model to the cross-region system operator; establishing, by the cross-region system operator, a reduced dispatching model of the multi-region power system based on the aggregation model from each regional system operator; and solving, by the cross-region system operator, the reduced dispatching model to obtain a dispatching result of each regional power system.

Abstract: A system for enhanced power system model validation is provided. The system includes a computing device including at least one processor in communication with at least one memory device. The at least one processor is programmed to store a plurality of models for a plurality of devices and a plurality of input files associated with the plurality of models, receive, from a user, a selection of model of the plurality of models to simulate, retrieve one or more input files of the plurality of input files, perform a model validity check on the selected model, if the selected model passed the model validity check, perform a model calibration on the selected model, and if the selected model passed the model calibration, perform a post evaluation on the selected model.

Abstract: A system and method to selectively pass and damp oscillations in an electric power grid via a controller of a power electronic device irrespective of the modes of the power oscillations. The system and method includes multiple limiters having dynamic limits that are openable and closeable to control the response of the controller, damping ratio dynamic gain control logic that determines a dynamic gain for a control signal based on the oscillation characteristics of one or more input signals, and pulse counter logic to selectively control at least one of the limiters based on the pulse count of the control signal.

Abstract: A method for operating an electric island power network having a renewable energy generation plant, a conventional energy generation plant, an energy store, and an energy consumer, includes: defining first operating parameters for the network for when a frequency and/or voltage of the network is outside defined limits; operating the network using the first operating parameters causing the frequency and voltage of the network to both be within the defined limits; defining second operating parameters for the network after the expiration of a defined time span over which the frequency and voltage have remained within the defined limits, the second operating parameters being defined such that operating the network using the second operating parameters causes the network to operate cost-optimally. If verified that the second operating parameters ensure that the frequency and voltage remain within the defined limits, operation using the second operating parameters is maintained. Otherwise, it is discontinued.

Abstract: An energy efficiency data collection system architecture may be configured to enable efficient and accurate collection of energy efficiency data associated with users and/or sites associated with users and generation of profiles associated with the users based on the energy efficiency data. An energy efficiency data collection service may receive location information, image data, and user-input data from an application operating on a mobile device associated with a user. The energy efficiency data collection service may generate profiles based on the information received from the application and may provide incentives to the users in response to participating in an energy efficiency data collection survey.

Abstract: In one or more embodiments, a liquid management system may include multiple impellers; multiple liquid transfer lines; a first impeller system that includes a first impeller of the multiple impellers; a second impeller system that includes a second impeller of the multiple impellers; and a shaft, coupled to the first impeller system and coupled to the second impeller system and configured to transfer the at least the portion of the energy to the second impeller system. The liquid management system may be configured to be coupled to an information handling system. The first impeller system may be configured to harvest, via rotation of the first impeller, energy from a flow of a liquid. The second impeller system may be configured to create pressure difference between two of the multiple liquid transfer lines coupled to the second impeller system.

Abstract: A method and apparatus for analyzing power devices in a circuit are disclosed. In one embodiment, a power analysis apparatus analyzes information on power supplied to the circuit and classifies the power patterns into groups of their own similar power patterns by making reference to the information on the power patterns, so as to acquire at least one piece of motif information which is information on at least one fingerprint. The apparatus further counts the frequency of occurrence of each motif and determines a pair of specific motifs having the difference between the counted frequencies of occurrence, which is within a predetermined value range, and average power variation values symmetrical to each other, whereby an accurate determination can be made as to the individual power devices in the circuit.

Abstract: Systems, methods, and non-transitory computer-readable storage media for a fast power network simulator. A system configured per this disclosure can use identify a power network, the power network comprising generators, transmission lines, and loads, and receive a model of the power network. The model of the power network can include: models of the generators modeled as differential equations, and models of the transmission lines and the loads modeled as algebraic equations. The system can convert, via a processor, the algebraic equations of the models of the transmission lines and the loads to additional differential equations, then combine, via the processor, the differential equations and the additional differential equations, to yield combined differential equations. The system can then iteratively solve linear equations, via the processor, associated with the combined differential equations, to yield solutions, and output the solutions as part of a power simulation of the power network.