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公开(公告)号：US20210111549A1
公开(公告)日：2021-04-15
申请号：US16788408
申请日：2020-02-12
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , David J. Casebolt , Krishnanjan Gubba Ravikumar , Austin Edward Wade , Lisa Gayle Nelms , Brian R. Clark
IPC: H02H1/00
Abstract: The present disclosure pertains to systems and methods for monitoring electrical arc events in an electric power system. In one embodiment, a system may comprise an arc flash detection (AFD) unit to detect electromagnetic radiation generated by an electrical arc event, a primary protection relay to generate measurements of an electric current, and an integrator. In various embodiments, the integrator may comprise a communication port to receive the detection of the electrical arc event and the measurements of the electric current. The integrator may also comprise a processing subsystem to validate the detection of the electrical arc and generate protective actions to interrupt the flow of the current to the electrical arc event.
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公开(公告)号：US20210109157A1
公开(公告)日：2021-04-15
申请号：US16919891
申请日：2020-07-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Krishnanjan Gubba Ravikumar , Austin Edward Wade
IPC: G01R31/327 , G01R35/02
Abstract: Systems and methods testing a power protection relay include a merging unit to receive signals from an electric power delivery system. The merging unit includes a test signal input to receive test signals from a testing device, a relay output to output at least one of the test signals to a power protection relay, a distribution output to output at least another of the test signals to one or more additional merging units, and a switch subsystem to route the test signal to the relay output or the distribution output.
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公开(公告)号：US20210109156A1
公开(公告)日：2021-04-15
申请号：US16835450
申请日：2020-03-31
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , David E. Whitehead , Tony J. Lee , David J. Casebolt , Krishnanjan Gubba Ravikumar , David Schmidt , Austin Edward Wade
IPC: G01R31/327 , H01H47/00 , H02H1/00
Abstract: Systems and methods for testing a protection relay, such as a primary bus protection relay, may include a testing device for providing current signals imitating current on both sides of a bus to the primary bus protection relay. The signals may be provided using signals corresponding with a signal format from merging units or other monitoring devices. The testing device may be configured to receive communications from the primary bus protection relay for evaluation of the operation of the primary bus protection relay.
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公开(公告)号：US20200096959A1
公开(公告)日：2020-03-26
申请号：US16136883
申请日：2018-09-20
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Krishnanjan Gubba Ravikumar , Scott M. Manson , Mahipathi Reddy Appannagari , Benjamin E. Armstrong
Abstract: The present disclosure relates to systems and methods of simulating a power system using field data. For example, an embodiment may include a processor operatively coupled to a memory. The processor may receive a power system model representative of an actual power system. The processor may receive field data from the actual power system. The processor may initialize the power system model based on the field data to represent a state of the actual power system. The processor may simulate at least one scenario on the power system model. The processor may provide results of simulating the at least one scenario.
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公开(公告)号：US10476268B2
公开(公告)日：2019-11-12
申请号：US15893405
申请日：2018-02-09
Applicant: Schweitzer Engineering Laboratories Inc.
Inventor： Krishnanjan Gubba Ravikumar , Scott M. Manson , Benjamin E. Armstrong
Abstract: The present disclosure describes load shedding management systems and methods. A load shedding management system may simulate multiple load shedding actions. Based on the simulations the load shedding management system may select a load shedding action. The load shedding management system may send a signal to trip a set of breakers to implement the load shedding action.
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Patent Agency Ranking
公开(公告)号：US20190252883A1
公开(公告)日：2019-08-15
申请号：US15893405
申请日：2018-02-09
Applicant: Schweitzer Engineering Laboratories Inc.
Inventor： Krishnanjan Gubba Ravikumar , Scott M. Manson , Benjamin E. Armstrong
Abstract: The present disclosure describes load shedding management systems and methods. A load shedding management system may simulate multiple load shedding actions. Based on the simulations the load shedding management system may select a load shedding action. The load shedding management system may send a signal to trip a set of breakers to implement the load shedding action.
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公开(公告)号：US10381835B1
公开(公告)日：2019-08-13
申请号：US15893423
申请日：2018-02-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: The present disclosure provides systems and methods for managing an electric power delivery system. The systems and methods may limit generated power of the power delivery system from surpassing a load demand, in order to avoid system instability. The systems and methods may receive an excess generation value and manage generators to runback and/or shed to maintain excess generation below a threshold. The systems and methods may determine a plurality of generator groups for runback. The runback capacity of the generators may be compared against the excess generation. If the excess generation is not greater than the runback capacity, the systems and methods may select generator groups until the runback capacity of the selected groups is greater than the excess generation, and may runback those generators according to runback set points. The unselected generators may continue normal operation to be available for another runback request.
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48.发明申请公开(公告)号：US20180323611A1
公开(公告)日：2018-11-08
申请号：US15587179
申请日：2017-05-04
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Krishnanjan Gubba Ravikumar
CPC classification number: H02J3/00 , G05B17/02 , H02H1/0061 , H02J13/0006 , H02J2003/007
Abstract: Protective IEDs in an electrical power system, such as distributed controllers, may periodically or in real-time communicate updated protection settings to a wide-area controller, such as a coordination controller, that defines and/or implements a remedial action scheme to protect the electrical power system. The wide-area controller may utilize real-time protection setting information from a plurality of protective IEDs to perform dynamic transient model simulations based on (1) the current topology of the power system, (2) real-time measurements from the system, and (3) the updated, real-time protection settings of various IEDs within the system. The results of the updated transient model simulations may be used to dynamically adjust the remedial actions scheme of the wide-area controller.
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公开(公告)号：US09906041B2
公开(公告)日：2018-02-27
申请号：US15071512
申请日：2016-03-16
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem to obtain a first plurality of time-stamped electrical parameter measurements from a first node. A measurement analysis subsystem may compare the first plurality of time-stamped electrical parameter measurements and the second plurality of time-stamped electrical parameter measurements. The first node and the second node may be associated in an electrical island by a topology detection subsystem based on the correlation. A control subsystem may be configured to implement a control action based on the association of the first node and the second node in the electrical island.
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公开(公告)号：US20170271882A1
公开(公告)日：2017-09-21
申请号：US15071512
申请日：2016-03-16
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem to obtain a first plurality of time-stamped electrical parameter measurements from a first node. A measurement analysis subsystem may compare the first plurality of time-stamped electrical parameter measurements and the second plurality of time-stamped electrical parameter measurements. The first node and the second node may be associated in an electrical island by a topology detection subsystem based on the correlation. A control subsystem may be configured to implement a control action based on the association of the first node and the second node in the electrical island.
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