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公开(公告)号：US10289081B2
公开(公告)日：2019-05-14
申请号：US14683397
申请日：2015-04-10
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Ratnesh Sharma , Ceyhun Eksin
Abstract: A system to manage a power grid includes one or more storage and generator devices coupled to the power grid; and a decentralized management module to control the devices including: a module to perform decentralized local forecasts; and a module to perform decentralized device reconfiguration.
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公开(公告)号：US10234511B2
公开(公告)日：2019-03-19
申请号：US14846149
申请日：2015-09-04
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Ratnesh Sharma
Abstract: Systems and methods for optimal sizing of one or more grid-scale batteries for frequency regulation service, including determining a desired battery output power for the one or more batteries for a particular period of time. A battery size is optimized for the one or more batteries for the particular period of time, and the optimizing is repeated using different time periods to generate a set of optimal battery sizes based on at least one of generated operational constraints or quality criteria constraints for the one or more batteries. A most optimal battery is selected from the set of optimal battery sizes.
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公开(公告)号：US20190036482A1
公开(公告)日：2019-01-31
申请号：US16037381
申请日：2018-07-17
Applicant: NEC Laboratories America, Inc.
Inventor： Chenrui Jin , Babak Asghari , Ratnesh Sharma
IPC: H02S40/38 , H02J7/35 , H01L31/042 , H02J7/00
Abstract: A computer-implemented method executed on a processor for outputting a smoothed photovoltaic (PV) power output from a battery of a power control system communicating with one or more microgrids is presented. The method includes curtailing an input signal received from a plurality of sensors, smoothing the input signal by employing a fuzzy logic based low pass filter having an adaptive window to generate a power reference command, applying a hard ramp rate limit to the power reference command, adjusting battery power output of the battery to satisfy battery constraints and a no-power-from-grid constraint, and distributing energy from the battery based on the adjusted battery power output.
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34.发明申请公开(公告)号：US20190005554A1
公开(公告)日：2019-01-03
申请号：US15992955
申请日：2018-05-30
Applicant: NEC Laboratories America, Inc.
Inventor： Babak Asghari , Ratnesh Sharma , Mohammad Rasoul Narimani
Abstract: A system, method, and computer-program product are provided for controlling a distributed energy storage system (ESS) operatively coupled to one or more microgrids. The system includes a memory for storing program code. The system further includes a processor for running the program code to respectively assign a first, a second, and a third set of weights to a first, a second, and a third objective function formulated to minimize an ESS cost, minimize a Demand Charge (DC) cost, and maximize a Photovoltaic utilization, respectively. The processor further runs the program code to execute a multi-objective ESS optimizing engine to obtain a set of different monthly-based optimal solutions for controlling the ESS by concurrently processing the first, the second, and the third objective functions using different ones of the weights from the first, the second, and the third set of weights.
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公开(公告)号：US20180330250A1
公开(公告)日：2018-11-15
申请号：US15974155
申请日：2018-05-08
Applicant: NEC Laboratories America, Inc.
Inventor： Kiyoshi Nakayama , Ratnesh Sharma
CPC classification number: G06N5/04 , G06N99/005 , H02J13/0006
Abstract: A computer-implemented method for detecting and predicting anomalies in an energy management system is presented. The method includes detecting, in real-time, a first set of outliers for a plurality of energy devices under operation, predicting a second set of outliers for running the plurality of energy devices, analyzing historical energy data of the plurality of energy devices to extract a third set of outliers, receiving feedback, in real-time, from a user regarding each of the first, second, and third sets of outliers, and training the energy management system with the real-time feedback received from the user to automatically optimize a threshold of error detection.
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Patent Agency Ranking
公开(公告)号：US20180166878A1
公开(公告)日：2018-06-14
申请号：US15833343
申请日：2017-12-06
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Ratnesh Sharma , Ramin Moslemi
CPC classification number: H02J3/14 , G05B15/02 , G06F17/18 , G06N20/00 , G06Q10/04 , H02J3/32 , H02J7/0013 , H02J7/007 , H02J2003/003 , H02J2007/0067
Abstract: A computer-implemented method, system, and computer program product are provided for demand charge management. The method includes receiving an active power demand for a facility, a current load demand charge threshold (DCT) profile for the facility, and a plurality of previously observed load DCT profiles. The method also includes generating a forecast model from a data set of DCT values based on the current load DCT profile for the facility and the plurality of previously observed load DCT profiles. The method additionally includes forecasting a monthly DCT value for the facility using the forecast model. The method further includes preventing actual power used from a utility from exceeding the next month DCT value by discharging a battery storage system into a behind the meter power infrastructure for the facility.
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公开(公告)号：US09966777B2
公开(公告)日：2018-05-08
申请号：US14802564
申请日：2015-07-17
Applicant: NEC Laboratories America, Inc.
Inventor： Feng Guo , Ratnesh Sharma
CPC classification number: H02J7/0065 , H02M7/483 , H02M7/537 , H02M2007/4835
Abstract: A modular multilevel converter for hybrid energy storage includes a battery. Three phases are connected in serial to the battery and in parallel to one another, each phase having two arms of sub-modules and buffer inductors. Each of the sub-modules includes a half-bridge and an ultracapacitor. A control module is configured to control the battery output power and ultracapacitor output power independently.
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公开(公告)号：US20170317498A1
公开(公告)日：2017-11-02
申请号：US15489805
申请日：2017-04-18
Applicant: NEC Laboratories America, Inc.
Inventor： Feng Guo , Ratnesh Sharma
CPC classification number: H02J13/0006 , G05B15/02 , H02J3/12 , H02J3/18 , H02J3/382 , H02J3/50 , H02J2003/007 , Y02E40/30 , Y02E40/72 , Y02E60/76 , Y04S10/123 , Y04S40/22
Abstract: A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (DGs) is presented. The computer-implemented method includes collecting, by a resiliency controller including at least a voltage control module, measurement data from the microgrid, using, by a reactive power estimator, reactive power estimations to calculate an amount of reactive power for each of the DGs, and using a dynamic droop control unit to distribute the reactive power to each of the DGs of the microgrid.
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公开(公告)号：US09785130B2
公开(公告)日：2017-10-10
申请号：US14681027
申请日：2015-04-07
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Ratnesh Sharma
CPC classification number: G05B15/02 , G05B2219/2639 , G06Q10/04 , G06Q10/063 , G06Q50/06 , H02J3/12 , H02J3/382 , H02J7/34 , H02J2003/003 , Y04S10/54
Abstract: A method for power management includes applying a decentralized control to manage a large-scale community-level energy system; obtaining a global optimal solution satisfying constraints between the agents representing the energy system's devices as a state-based potential game with a multi-agent framework; independently optimizing each agent's output power while considering operational constraints and assuring a pure Nash equilibrium (NE), wherein a state space helps coordinating the agents' behavior in energy system to deal with system-wide constraints including supply demand balance, battery charging power constraint and satisfy system-wide and device-level (local) operational constraints; and controlling distributed generations (DGs) and storage devices using the agent's output.
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公开(公告)号：US20170256004A1
公开(公告)日：2017-09-07
申请号：US15416810
申请日：2017-01-26
Applicant: NEC Laboratories America, Inc.
Inventor： Ali Hooshmand , Seyyed Ali Pourmousavi Kani , Ratnesh Sharma , Shankar Mohan
Abstract: A system and method are provided. The system includes a processor. The processor is configured to receive power related data relating to power usage of power consuming devices at a customer site from a plurality of sources. The processor is further configured to generate object function inputs from the power related data. The processor is additionally configured to apply the generated object function inputs to an objective function to determine an optimal capacity for a battery storage system powering the power consuming devices at the customer site while minimizing a daily operational power cost for the power consuming devices at the customer site. The processor is also configured to initiate an act to control use of one or more batteries of the battery storage system in accordance with the optimal capacity for the battery storage system.
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