公开(公告)号：US20240313531A1

公开(公告)日：2024-09-19

申请号：US18415845

申请日：2024-01-18

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION

发明人： Daisuke TAKEDA ,  Kenji MITSUMOTO ,  Koji SASAKI ,  Koji TOBA

IPC分类号： H02J3/00 ,  H02J9/06 ,  H02J13/00

CPC分类号： H02J3/0012 ,  H02J3/003 ,  H02J9/06 ,  H02J13/00001 ,  H02J13/00002 ,  H02J2203/10 ,  H02J2300/20

摘要： An energy management system is disclosed. In the system, a mode identification unit identifies whether a microgrid is in a grid connection mode or in an isolated operation mode. A prediction unit predicts, during the grid connection mode, an amount of demand for electric power in the microgrid and an output amount of renewable energy. The prediction is performed for a case where the grid connection mode is continued and for a case where the grid connection mode is switched to the isolated operation mode. A planning unit creates a facility operation plan for the microgrid to be applied to the grid connection mode and the isolated operation mode. A display I/F unit displays, on a display device in the grid connection mode, operation information representing operation of the microgrid during the isolated operation mode.

公开(公告)号：US20240305096A1

公开(公告)日：2024-09-12

申请号：US18667399

申请日：2024-05-17

申请人： Huawei Digital Power Technologies Co., Ltd.

发明人： Meiqing Zhang ,  Shuo Wang ,  Mingxuan Dong ,  Kai Xin

IPC分类号： H02J3/00

CPC分类号： H02J3/0012

摘要： An output end of a power converter is connected to a microgrid bus, and the microgrid bus is connected to an external power grid through a grid-tied switch. When detecting that a power grid fails, the power converter is in a first current source control mode. After a duration of the power grid failure reaches a first duration, the power converter switches from the first current source control mode to a first voltage source control mode. The first current source control mode is a current source failure ride-through control mode. The first voltage source control mode is a voltage source failure ride-through control mode. The first duration is less than a second duration, and the second duration is a time interval between a moment at which the power grid fails and a moment at which the grid-tied switch is turned off.

公开(公告)号：US12079252B2

公开(公告)日：2024-09-03

申请号：US17340724

申请日：2021-06-07

申请人： Longyu Chen

发明人： Longyu Chen

IPC分类号： G06F16/29 ,  G01R31/08 ,  G06Q50/06 ,  G06T11/20 ,  H02J3/00

CPC分类号： G06F16/29 ,  G01R31/088 ,  G06Q50/06 ,  G06T11/203 ,  H02J3/0012

摘要： The present application provides a modeling analysis method for a device management network and an electronic device. The modeling analysis method includes: acquiring position information and type information of a first node acquired by a user terminal; and displaying the first node on an electronic map according to the position information and type information of the first node, and establishing, in accordance with a first predetermined rule and on the electronic map, a line connection between the first node and at least one second node displayed on the electronic map. By the technical solution of the present application, a network model can be automatically constructed for rapid analysis, so that users can check the network diagram and network analysis results in real time, quickly, and automatically, so as to improve the real network of the physical world based on the rapid analysis of the network model.

公开(公告)号：US20240288482A1

公开(公告)日：2024-08-29

申请号：US18600022

申请日：2024-03-08

申请人： University of Manitoba

发明人： Athula Dayanarth Rajapakse ,  Naushath Mohamed Haleem ,  Jagannath Sri Wijekoon

IPC分类号： G01R31/08 ,  H02J3/00 ,  H02J3/36 ,  H02J13/00

CPC分类号： G01R31/085 ,  H02J3/0012 ,  H02J3/36 ,  H02J13/00002 ,  H02J2203/20

摘要： There is disclosed a method for identifying one or more faulted conductors in a power transmission system having at least two power-transmitting conductors and a method for determining fault location. Both methods include steps of monitoring current signals which are representative of currents in the conductors at a generally common location within the power transmission system; filtering the current signals; determining a maximum rate of change of each filtered current signal within a predetermined time interval after the fault event has commenced; and calculating a ratio of a pair of the maximum rates of change of the filtered current signals. For fault classification, the ratio is compared against a discrimination factor to identify the one or more faulted conductors. For fault location, the calculated ratio is compared against the calibration data to determine the distance from the connection terminal of the faulted conductor to the fault location.

公开(公告)号：US12068602B2

公开(公告)日：2024-08-20

申请号：US17427285

申请日：2020-01-31

申请人： Duke Energy Corporation

发明人： W R M Anuja Ratnayake ,  Daniel Woodall ,  Andrew Kling ,  Gerard Rendell ,  Jacob A. Richardson ,  Miguel Armando Sanda ,  Jose Martin Cardenas ,  John Templeton Pressley ,  Rakesh Kumar Belchandan

IPC分类号： H02J3/00 ,  G05B19/042 ,  H02J3/06

CPC分类号： H02J3/0012 ,  G05B19/042 ,  H02J3/06 ,  G05B2219/2639 ,  H02J2203/10 ,  H02J2203/20 ,  H02J2300/22

摘要： A control system for a power distribution grid including an electrical distribution circuit includes a processor configured to perform operations including constructing a grid model comprising edges and nodes representing assets and transmission paths of the power distribution grid, generating an analysis of an operation of the power distribution grid over a predetermined time duration, determining a plurality of constraint violations based on the analysis of the operation of the power distribution grid within the predetermined time duration, generating a plurality of alterations to the power distribution grid, respective ones of the plurality of alterations resolving at least one of the constraint violations, selecting a first alteration of the plurality of alterations to the power distribution grid responsive to determining that the selected first alteration resolves at least two of the plurality of constraint violations, and autonomously implementing the first alteration to the power distribution grid.

公开(公告)号：US20240275169A1

公开(公告)日：2024-08-15

申请号：US18567954

申请日：2022-05-09

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： Ningning Chen ,  Shan Zhang ,  Jing Wang ,  Meng Huang

IPC分类号： H02J3/32 ,  H02J3/00 ,  H02J7/00

CPC分类号： H02J3/32 ,  H02J3/0012 ,  H02J7/0048 ,  H02J7/00712 ,  H02J2203/10

摘要： The present disclosure discloses a control method for an energy storage system and apparatus, an energy storage system, and an energy storage device. The control method includes obtaining an operation parameter of a power grid and an electric quantity state of an energy storage battery in an energy storage system; and controlling working states of the power grid, the energy storage battery, a first auxiliary power supply, and a second auxiliary power supply according to the operation parameter of the power grid and the electric quantity state of the energy storage battery.

公开(公告)号：US12062913B2

公开(公告)日：2024-08-13

申请号：US17874840

申请日：2022-07-27

申请人： SANYO DENKI CO., LTD.

发明人： Takashi Kataoka ,  Noriaki Kasuga ,  Masaki Miyashita

IPC分类号： H02J3/00 ,  G01R19/165 ,  G01R19/22 ,  G01R19/252

CPC分类号： H02J3/0012 ,  G01R19/16547 ,  G01R19/16571 ,  G01R19/22 ,  G01R19/252

摘要： An input power monitoring circuit includes a rectifier circuit, a divided voltage generator circuit, a divided voltage comparator circuit, a switching circuit, and a computing device. The divided voltage comparator circuit is configured in such a manner that polarity of an output signal that is outputted from a first comparator upon a first rectified divided voltage exceeding a first comparison voltage is opposite to polarity of an output signal that is outputted from a second comparator upon a second rectified divided voltage exceeding a second comparison voltage. Output terminals of the first and second comparators are connected to each other. A connection point between the output terminals of the first and second comparators is connected to an input terminal of the switching circuit. The computing device measures frequency of a pulse signal outputted from the switching circuit, and determines the voltage state of input power based on the measured frequency.

公开(公告)号：US12062912B2

公开(公告)日：2024-08-13

申请号：US17621533

申请日：2020-04-15

申请人： Schneider Electric USA, Inc.

发明人： Daniel Douglas Sabin

IPC分类号： H02H3/20 ,  G01R31/08 ,  H02J3/00

CPC分类号： H02J3/0012 ,  G01R31/086 ,  H02H3/20 ,  H02H3/207 ,  H02J3/00

摘要： A method includes capturing at least one energy-related waveform using at least one intelligent electronic device in an electrical system, and processing electrical measurement data from, or derived from, the at least one energy-related waveform to identify disturbances in the electrical system. In response to identifying the disturbances in the electrical system, each sample of the at least one energy-related waveform associated with the identified disturbances is analyzed and categorized into one of a plurality of disturbance categories. The disturbance categories may include voltage sags due to upline electrical system disturbances, voltage sags due to downline electrical system faults, voltage sags due to downline transformer and/or motor magnetization, and voltage sags due to other downline disturbances. A disturbance categorization is determined for the at least one energy-related waveform based on the categorization of each sample. An action is taken based on the disturbance categorization.

公开(公告)号：US12051940B2

公开(公告)日：2024-07-30

申请号：US18078573

申请日：2022-12-09

申请人： Google LLC

发明人： Sangsun Kim ,  Krishnanjan Gubba Ravikumar

IPC分类号： H02J9/06 ,  G01R19/02 ,  H02J3/00

CPC分类号： H02J9/062 ,  G01R19/02 ,  H02J3/0012

摘要： Disclosed are devices, systems, and methods for operating a backup power source or an uninterruptible power supply (UPS) that can be used in data centers and that provide a backup power source to power the data center when utility power is compromised. A power delivery system that provides power to a primary system may include a UPS with a state timing control system that operates a bypass static switch. The state timing control system can determine when to transition the primary system from the utility power supply to the backup UPS, based on the current AC voltage conditions. The state timing control system may perform modeling to emulate the intermediate DC voltage of an actual rectifier, and particularly emulate the holdup capacitor voltage. The emulated capacitor voltage can be obtained in real time by both an input power model based on RMS utility voltage and the actual rectifier output load.

公开(公告)号：US20240231407A1

公开(公告)日：2024-07-11

申请号：US18351089

申请日：2023-07-12

申请人： Causam Enterprises, Inc.

发明人： Joseph W. Forbes, JR.

IPC分类号： G05F1/66 ,  G05B15/02 ,  G05B19/042 ,  H02J3/00 ,  H02J3/14 ,  H02J13/00

CPC分类号： G05F1/66 ,  G05B15/02 ,  G05B19/042 ,  H02J3/00 ,  H02J3/001 ,  H02J3/0012 ,  H02J3/14 ,  H02J13/00 ,  H02J13/00001 ,  H02J13/00004 ,  H02J13/00028 ,  H02J13/00034 ,  G05B2219/40458 ,  H02J2203/20 ,  Y02B70/3225 ,  Y02E60/00 ,  Y04S20/222 ,  Y04S40/20

摘要： 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.