公开(公告)号：US20190249543A1

公开(公告)日：2019-08-15

申请号：US15893225

申请日：2018-02-09

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B47/12 ,  G05B23/02 ,  E21B47/00 ,  H02H1/00 ,  H02H3/10

CPC分类号： E21B47/12 ,  E21B17/003 ,  E21B47/00 ,  G05B23/0208 ,  G05B2219/25004 ,  H02H1/0007 ,  H02H1/0092 ,  H02H3/105 ,  H04L12/40013

摘要： A reconfigurable network for interconnecting tools in a bottom hole assembly is disclosed. The network includes nodes that have reconfigurable switches that can be configured to provide a conductive path for the bus through the node, connect a terminator to the bus, and/or connect a tool to the bus. The exact configuration (i.e., states) of the switches in each node may be automatically selected based on a detected fault in a tool attached to a node and/or the state of other switches in the node or/a specific request is received. Various node embodiments and a method and circuit for automatically disconnecting a tool from the network in response to a tool fault are further disclosed.

公开(公告)号：US20190237965A1

公开(公告)日：2019-08-01

申请号：US16170280

申请日：2018-10-25

申请人： S&C Electric Company

发明人： Paul Michael Pabst ,  Michael James Higginson ,  Keith Moses

IPC分类号： H02H7/28 ,  H02H1/00

CPC分类号： H02H7/28 ,  H02H1/0092

摘要： A method for correcting protection settings in a relay provided in a micro-grid between a grid-connected settings group when the micro-grid is electrically coupled to a utility grid and an islanded settings group when the micro-grid is disconnected from the utility grid. The method determines whether the micro-grid is connected to the utility grid and what settings group the relay is in. The method changes the settings group of the relay to the grid-connected settings group if a time that the micro-grid is connected to the utility grid and the relay is in the islanded settings group exceeds a predetermined time and changes the settings group of the relay to the islanded settings group if the time that the micro-grid is not connected to the utility grid and the relay is in the grid-connected settings group exceeds the predetermined time.

公开(公告)号：US20190222017A1

公开(公告)日：2019-07-18

申请号：US16361468

申请日：2019-03-22

申请人： Hubbell Incorporated

发明人： William Vernon Miller, III ,  Gary Michael Miller

IPC分类号： H02H1/00

CPC分类号： H02H1/0015 ,  G01R31/1227 ,  G01R31/1272 ,  H01H9/50 ,  H01H2083/201 ,  H02H1/0092

摘要： Method and system allowing more accurate detection and identification of unwanted arcing include novel processing of signal voltage representing recovered power-line current. In one implementation, arc-faults are detected based on numerical analysis where individual cycles of line voltage and current are observed and data collected during each cycle is processed to estimate likelihood of presence of arc-event within each individual cycle based on pre-defined number of arc-events occurring within pre-defined number of contiguous cycles. In another implementation, fast transient current spikes detection can be done by: computing difference values between consecutive line-current samples collected over a cycle, average of differences, and peak-to-peak value of line-current; comparing each difference value to average of difference; comparing each difference value to peak-to-peak value; and, based on calculation of composite of two comparisons, using thresholds to determine if arcing is present within processed cycle.

公开(公告)号：US20190013667A1

公开(公告)日：2019-01-10

申请号：US16065693

申请日：2016-07-18

申请人： CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED ,  STATE GRID CORPORATION OF CHINA ,  STATE GRID CENTRAL CHINA GRID COMPANY LTD.

发明人： Huanzhang Liu ,  Zexin Zhou ,  Dingxiang Du ,  Yarong Guo ,  Xiao Li ,  Xuming Liang ,  Delin Wang ,  Xingguo Wang

IPC分类号： H02H7/26 ,  H02H1/00

CPC分类号： H02H7/265 ,  H02H1/0007 ,  H02H1/0092

摘要： A method of free wave energy protection for a half-wavelength line based on a one-sided current includes: performing sampling and calculation on a current at protection measuring points to obtain variations in current sampling values; and activating a protective element to determine an occurrence time of a fault in a half-wavelength line. A free wave energy protection section includes a quick-action section, a basic section and a sensitive section, wherein the quick-action section, the basic section and the sensitive section serve as action criteria for performing protection with respect to the free wave energy of the half-wavelength line.

公开(公告)号：US20180358802A1

公开(公告)日：2018-12-13

申请号：US15780524

申请日：2016-01-27

申请人： ABB Schweiz AG

发明人： Ivo Brncic ,  Zhanpeng Shi ,  Sören Forsman

IPC分类号： H02H7/045 ,  H02H1/00

CPC分类号： H02H7/0455 ,  H02H1/0092 ,  H02H3/006 ,  H02H3/283 ,  H02H7/045

摘要： A method of current differential protection performed in a control device is disclosed, wherein the control device has a first operate-restrain characteristic with a differential characteristic pick-up setting ID. The method includes: determining currents of all terminals of a protected object; determining a differential current based on the determined currents; determining direct current, DC, components in the respective determined currents; detecting a fault; and adjusting, for a detected external fault, the operate-restrain characteristics by setting an adjusted differential characteristic pick-up setting ID_adj to be equal to the sum of the differential characteristic pick-up setting ID and the determined DC components, providing an adapted operate-restrain characteristics. Corresponding control device, computer program and computer program product are also disclosed.

公开(公告)号：US20180337526A1

公开(公告)日：2018-11-22

申请号：US15940254

申请日：2018-03-29

申请人： CommScope Technologies LLC

发明人： Khalid W. Al-Mufti ,  Daryl A. Coleman

IPC分类号： H02H7/20 ,  H02H9/02 ,  H02H1/00

CPC分类号： H02H7/20 ,  H02H1/0007 ,  H02H1/0092 ,  H02H9/02 ,  H02H9/04 ,  H04W88/08

摘要： A method is provided. The method comprises: booting a system; determining if the system has properly booted; if the system has properly booted, then initiating communications with the at least one DC-DC voltage converter system that is configured to power at least one remote radio head; determining if communications have been established with the at least one DC-DC voltage converter system; and if communications have been established, then supplying a higher voltage from the system.

公开(公告)号：US20180323608A1

公开(公告)日：2018-11-08

申请号：US15915151

申请日：2018-03-08

申请人： Hamilton Sundstrand Corporation

发明人： Virgilio VALDIVIA GUERRERO ,  Fabien DUBOIS ,  Laura ALBIOL-TENDILLO ,  Mustansir KHERALUWALA

IPC分类号： H02H9/00 ,  H02H1/00 ,  H02H9/02 ,  G05F1/66

CPC分类号： H02H9/002 ,  G05F1/66 ,  H02H1/0092 ,  H02H9/02 ,  H03K17/082 ,  H03K17/166

摘要： A solid state power controller, SSPC, having an input to receive supply current and an output for providing output current to a load in response to connection to the power supply, the solid state power controller further comprising at least one solid state switch and a controller to limit the power dissipated in the solid state power switch based on a measured voltage across the solid state switch and a predetermined power dissipation threshold for the SSPC to adjust the output current or voltage control signal of the solid state switch such that the actual power dissipation of the SSPC does not exceed the threshold.

公开(公告)号：US20180204699A1

公开(公告)日：2018-07-19

申请号：US15405513

申请日：2017-01-13

申请人： EATON CORPORATION

发明人： DANIEL A. HOSKO ,  THEODORE J. MILLER ,  ZHI GAO ,  RANDY P. SHVACH

IPC分类号： H01H71/74 ,  H02H1/00 ,  H02H3/02 ,  H02H1/06 ,  H02H3/05 ,  G05B15/02

CPC分类号： H01H71/74 ,  G05B15/02 ,  H02H1/0015 ,  H02H1/0092 ,  H02H1/06 ,  H02H3/006 ,  H02H3/02 ,  H02H3/05 ,  H02H3/16 ,  H02H3/33

摘要： A circuit interrupter includes an electronic trip unit structured to receive power from a power supply. The electronic trip unit includes a start-up process and is structured to proceed through the start-up process when the electronic trip unit begins receiving power from the power supply and a timing circuit including a capacitor structured to begin charging when the electronic trip unit begins receiving power from the power supply. The electronic trip unit includes a processor that is structured to read a voltage across the capacitor when the start-up process has completed and to determine an elapsed time of the start-up process based on the read voltage across the capacitor.

公开(公告)号：US09904588B2

公开(公告)日：2018-02-27

申请号：US15076361

申请日：2016-03-21

申请人： XJ GROUP CORPORATION ,  XJ ELECTRIC CO., LTD ,  XUCHANG XJ SOFTWARE TECHNOLOGIES LTD ,  STATE GRID CORPORATION OF CHINA

发明人： Leitao Wang ,  Zhen Li ,  Junhong Qiu ,  Xing Liu ,  Lintao Ma ,  Lunshan Zhang ,  Ruizhi Jiang ,  Xinling Li ,  Juan Ji ,  Meng Li ,  Bao Zhao ,  Huawei Jia

IPC分类号： G06F11/07 ,  H02H1/00

CPC分类号： G06F11/0721 ,  G06F11/004 ,  G06F11/0751 ,  H02H1/0092

摘要： The present invention relates to a method of preventing misoperation about a relay protection device in a smart substation. Reversely operating CPU operation results of two operation records about the relay protection device, in order to form corresponding disassembler codes. According to disassembler codes, calculating similarity of the CPU operation results of the two operation records about the relay protection device by a structured method. Judging whether the similarity is greater than a set threshold or not. If the similarity is greater than the set threshold, the CPU operation results of the two operation records about the relay protection device to be the same, otherwise, the CPU operation results of the two operation records about the relay protection device are judged to be different. The present invention avoids the misoperations of the relay protection device on operation.

公开(公告)号：US09871364B2

公开(公告)日：2018-01-16

申请号：US14363987

申请日：2012-12-06

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Cédric Gouy-Pailler ,  Nicolas Chaintreuil

IPC分类号： H02H3/00 ,  H02H1/00 ,  H01L31/02 ,  H02S50/10 ,  H02H7/20

CPC分类号： H02H1/0092 ,  H01L31/02021 ,  H02H1/0015 ,  H02H7/20 ,  H02S50/10 ,  Y02E10/50

摘要： A method for detecting an electrical arc in a photovoltaic installation includes measurement (E6) of voltage values at at least one point of the electrical circuit of the photovoltaic installation; digitization (E8) of the measured voltage values to form a sampling of data x; calculation (E10) of an estimation value y of the presence of an electrical arc based on a statistical calculation on the sampling of data and the inclusion of an omission factor Φ; and comparison (E12) of the estimation value y of the presence of an electrical arc with a threshold value to deduce therefrom the presence or absence of an electrical arc in the photovoltaic installation.