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    Islanding a plurality of grid tied power converters
    6.
    发明授权
    Islanding a plurality of grid tied power converters 有权

    公开(公告)号：US09819190B2

    公开(公告)日：2017-11-14

    申请号：US15196869

    申请日：2016-06-29

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva Somani ,  John C. Palombini

    IPC: H02J3/38

    CPC classification number: H02J3/381 ,  H02J2003/388 ,  Y02P80/14 ,  Y02P80/152

    Abstract: A power system having a plurality of power converters coupled together at a point of common coupling (PCC). The power converters are coupled to a load and provide a combined power converter output to the load. A switch is coupled in series between the PCC and an external grid. When the switch is closed, the power system is in a grid-tied configuration and when the switch is open, the power system is in a microgrid configuration. A control system coupled to the power converters enables the switch to open and close in response to a signal received from one or more sensors monitoring the external grid, enables the power converters to operate in a current control mode when the switch is closed, and transitions the power converters from grid-tied mode to microgrid mode and synchronize the power converters such that the converters share the load.

    Real-time control of microgrids with explicit power setpoints: unintentional islanding
    7.
    发明授权
    Real-time control of microgrids with explicit power setpoints: unintentional islanding 有权

    公开(公告)号：US09774191B2

    公开(公告)日：2017-09-26

    申请号：US14846782

    申请日：2015-09-06

    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)

    Inventor： Mario Paolone ,  Jean-Yves Le Boudec ,  Andrey Bernstein ,  Lorenzo Enrique Reyes Chamarro

    IPC: H02J3/38 ,  H03L5/00 ,  H02J3/14 ,  G05B13/04

    CPC classification number: H02J3/38 ,  G05B13/04 ,  H02J3/14 ,  H02J2003/388 ,  Y02B70/3225 ,  Y02P80/14 ,  Y02P80/152 ,  Y04S20/222

    Abstract: The invention provides a method for coping with an unintentional islanding of an electrical distribution grid within a Commelec-type framework for the real-time control of micro-grids, of Resource Agents (RA) controlled by Grid Agents (GA), comprising at least maintain at any time before the unintentional islanding occurs a rating of all resource agents controlled by a same grid agent in view of their ability to be a slack resource, by computing the rating based on a power availability and on a state-of-energy of each resource, the state-of-energy quantifying an amount of energy that may be withdrawn from a potential slack irrespectively of a PQ profile, whereby the PQ profile describes bounds for active and reactive power that a resource can inject or absorb; and a shedding list of all the resources that have to be shed if a current best candidate slack resource is selected, the current best candidate slack resource being the slack resource having the best rating of all resources as determined in the step of rating all resource agents, the shedding list being obtained by computing from an uncertainty of the resources and a predetermined order of shedding priority. The method further comprises continuously monitor islanding conditions via an available real-time state estimation process, and when an islanding condition is detected, causing the grid agent to shed all resources in the shedding list and choose an initial slack based on the rating obtained before the islanding occurrence from the step of rating of all resource agents.

    Load Profile Selection in Adaptive Dynamic Islanding Using Batteries
    8.
    发明申请
    Load Profile Selection in Adaptive Dynamic Islanding Using Batteries 审中-公开

    公开(公告)号：US20170220010A1

    公开(公告)日：2017-08-03

    申请号：US15014515

    申请日：2016-02-03

    Applicant: International Business Machines Corporation

    Inventor： Anamitra R. Choudhury ,  Sampath Dechu

    IPC: G05B19/042

    CPC classification number: H02J3/00 ,  G05B2219/2639 ,  H02J3/34 ,  H02J3/38 ,  H02J9/06 ,  H02J2003/007 ,  H02J2003/388 ,  Y02E60/76 ,  Y04S40/22

    Abstract: Methods, systems, and computer program products for load profile selection in islanding using batteries are provided herein. A computer-implemented method includes generating a usage pattern model for a battery based on (i) information pertaining to consumers of the battery, (ii) information pertaining to usage of the battery, and (iii) information pertaining to network outages, wherein the network is linked to the battery; selecting a subset of the consumers of the battery to supply energy from the battery, during a network outage, based on (i) the usage pattern model, (ii) the lifespan of the battery, (iii) performance of the network, (iv) historical consumption data attributed to each of the consumers, and (v) a predetermined minimum amount of energy required to be supplied to the consumers during a network outage; and outputting instructions to activate and/or deactivate distribution components within the network based on said selecting.

    ELECTRICAL SYSTEMS AND METHODS FOR ISLANDING TRANSITIONS
    9.
    发明申请
    ELECTRICAL SYSTEMS AND METHODS FOR ISLANDING TRANSITIONS 审中-公开

    公开(公告)号：US20170179847A1

    公开(公告)日：2017-06-22

    申请号：US15380278

    申请日：2016-12-15

    Applicant: S&C Electric Company

    Inventor： David Glenn PORTER

    IPC: H02M7/44 ,  H02J3/38 ,  H02M1/32 ,  H02M1/08 ,  H02M1/42

    CPC classification number: H02M7/44 ,  H02J3/383 ,  H02J3/386 ,  H02J3/387 ,  H02J2003/388 ,  H02M1/08 ,  H02M1/32 ,  H02M1/42 ,  H02M2001/0009 ,  Y02E10/563 ,  Y02E10/763

    Abstract: Electrical systems and related operating methods are provided. One exemplary electrical system includes a sensing arrangement coupled to an electrical grid interface to measure an electrical characteristic of the electrical grid interface, a power conversion module having an output coupled to the electrical grid interface, and a control module coupled to the sensing arrangement and the power conversion module. The control module determines a reference value for the electrical characteristic, identifies an islanding condition based on a difference between a value for the electrical characteristic and the reference value, determines a target output value for the power conversion module based on the difference, and in response to the islanding condition, operates the power conversion module to provide the target output value for the electrical characteristic at the output. The target output value reduces the difference while a connection arrangement is being opened to achieve islanding.

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