公开(公告)号：US20170331274A1

公开(公告)日：2017-11-16

申请号：US15585435

申请日：2017-05-03

Applicant: Dlaboratory Sweden AB

Inventor： Magnus AKKE

IPC: H02H3/16

CPC classification number: H02H3/165 ,  G01R31/025 ,  G01R31/086 ,  H02H7/261 ,  H02H7/28

Abstract: A method and a device for disconnection of faults in an electric network comprising a plurality of stations connected in a loop, comprising feeding the loop from at least two feeding points from a power source, earthing a neutral point of the electric network through an impedance, detecting earth faults in a directional earth fault protection in at least one first secondary substation provided with directional earth fault protection, disconnecting a detected earth fault by a load switching device in said at least one first secondary substation provided with directional earth fault protection, detecting fault currents arising from short circuits between two or more phases in an over-current protection of a second secondary substation, and opening said loop with a circuit breaker of said second secondary substation.

公开(公告)号：US20170292999A1

公开(公告)日：2017-10-12

申请号：US15357766

申请日：2016-11-21

Applicant: GRID20/20, Inc.

Inventor： Randall Turner ,  Michael Vandenberg ,  Joseph Beaudet ,  Qi Fan Lu

IPC: G01R31/42 ,  G01R21/133

CPC classification number: G01R31/42 ,  G01R19/2513 ,  G01R21/133 ,  G01R31/027 ,  G06F11/0796 ,  H02H3/165 ,  H02H7/04

Abstract: The present disclosure is a transformer monitoring system that has a transformer monitoring device that reads a measurement on at least one node of a transformer. Additionally, the system has a processor that analyzes the measurement and compares the measurement to a threshold value. In addition, the processor transmits an alert to utility personnel if the comparison indicates that the system is not operating properly.

公开(公告)号：US20170229242A1

公开(公告)日：2017-08-10

申请号：US15495763

申请日：2017-04-24

Applicant: MJG INNOVATIONS, LLC

Inventor： Mark Eugene Goodson

IPC: H01G4/002 ,  H02P29/032 ,  H01C7/12 ,  H02K11/20 ,  H01G4/224 ,  H01G4/228

CPC classification number: H01G4/002 ,  H01C7/12 ,  H01G4/224 ,  H01G4/228 ,  H02H3/165 ,  H02H9/005 ,  H02H9/04 ,  H02H9/041 ,  H02H9/043 ,  H02H9/044 ,  H02K11/20 ,  H02P29/032

Abstract: A protected capacitor system/method implementing enhanced transient over-voltage suppression is disclosed. The system/method incorporates one or more surge suppression devices (SSDs) proximally located and in parallel with a capacitor structure to produce an overall protected capacitor structure having enhanced reliability and simultaneous ability to resist transient overvoltage conditions. The SSDs are formed from series combinations of transient voltage surge suppressors (TVSs) (metal oxide varistor (MOV), diode for alternating current (DIAC), and/or silicon diode for alternating current (SIDAC)) and corresponding shunt diode rectifiers (SDRs) and placed in parallel across a capacitor structure to locally suppress voltage transients across the capacitor structure in excess of the voltage rating of the capacitor structure. The parallel shunting TVB/SDR pairs may be integrated into a printed circuit board (PCB) assembly that is externally attached to the capacitor structure or encapsulated in an enclosure incorporating the capacitor structure.

公开(公告)号：US09726706B1

公开(公告)日：2017-08-08

申请号：US15040549

申请日：2016-02-10

Applicant: General Electric Company

Inventor： Zhiying Zhang ,  Sarasij Das ,  Tarlochan Sidhu ,  Mohammad Reza Dadash Zadeh

IPC: G01R31/02 ,  H02H3/16 ,  H02H7/04 ,  H02H7/045

CPC classification number: G01R31/025 ,  G01R31/027 ,  G01R31/06 ,  H02H3/165 ,  H02H7/042 ,  H02H7/045

Abstract: System and method for detecting turn-to-turn faults in one or more windings of various objects are provided. In one implementation, a fault detector receives a set of current measurements associated with a transformer and uses these measurements to execute a procedure for detecting a turn-to-turn fault in the transformer. The procedure can include dividing a steady-state differential current value by a steady-state voltage value to obtain one or more compensating factors, determining a magnetizing current amplitude indicator by multiplying the steady-state voltage value by the one or more compensating factors, determining a compensated differential current value by combining the steady-state differential current value with a modifier value that incorporates the magnetizing current amplitude indicator, comparing the compensated differential current value against a threshold value, and declaring an occurrence of the turn-to-turn fault in the transformer when the compensated differential current value exceeds the threshold value.

公开(公告)号：US20170194784A1

公开(公告)日：2017-07-06

申请号：US15107395

申请日：2015-07-17

Applicant: Halliburton Energy Services, Inc.

Inventor： Yusef Alaas ,  Sudhir Kumar Gupta ,  Aram Shihab Khaleel Almuhana

IPC: H02H3/16 ,  E21B47/12 ,  H04B3/54 ,  H02P29/028 ,  H02P29/024 ,  G01R31/02 ,  H02M1/084

CPC classification number: H02H3/165 ,  E21B47/12 ,  G01R31/02 ,  G01R31/025 ,  H02H3/17 ,  H02M1/084 ,  H02P29/0243 ,  H02P29/028 ,  H04B3/54 ,  H04B2203/5466 ,  H04B2203/5475

Abstract: A ground fault immune power and data delivery system for downhole sensors is connected to a downhole motor via a three-phase power cable. An AC power supply and sensor data module are electrically connected to one of two conductors (phases) at a time selected from the three conductors (phases) to provide power and data signals to the downhole sensors. If a ground fault is detected on one of the two connected phases, an isolation module isolates the grounded phase and switches to the ungrounded connected phase to continue transmitting power and data signals. A frequency of AC power supply, data communication frequencies and a switching frequency of a drive controlling the downhole motor are orthogonal to each other in order to mitigate interference. Surface-to-downhole communication can occur by adjusting voltage, frequency and/or phase of AC power supply controlled by a processor.

公开(公告)号：US09444244B2

公开(公告)日：2016-09-13

申请号：US14552929

申请日：2014-11-25

Applicant: Donald Randolph Hooper ,  Danial L. Aalberg

Inventor： Donald Randolph Hooper ,  Danial L. Aalberg

IPC: H02H3/00 ,  H02H3/16 ,  G08B17/10 ,  G08B17/06 ,  H02H1/00 ,  B60L3/04 ,  B60L3/00 ,  G01R31/02 ,  H01H83/20 ,  H01H83/22

CPC classification number: H02H3/165 ,  B60L3/0069 ,  B60L3/04 ,  G01R31/025 ,  G08B17/06 ,  G08B17/10 ,  H01H83/20 ,  H01H83/22 ,  H01H2239/054 ,  H02H1/0007 ,  H02H3/16 ,  Y02T90/14

Abstract: The current invention is an automatic AC power interruption system built into a portable apparatus or integrated into electrical systems and appliance control circuitry. Power is interrupted in potentially hazardous conditions, for example, when a T3 smoke detector alarm signal is detected. Alternatively, a portable device may be plugged into a power outlet having a GFCI breaker and, when a hazard alarm condition is detected, trip off power to the outlet. Signal-activated circuit interrupters (SACIs) may be integrated into appliance control circuitry and interrupt power to a problematic device when a hazard alarm condition is detected. In addition to fire prevention, other hazard alarm conditions may include alarms indicating toxic fumes, motor overload, natural gas, radon, or carbon monoxide. Interconnected networks of signal-activated circuit interrupters are also disclosed.

Abstract translation: 本发明是一种内置于便携式设备中或集成到电气系统和设备控制电路中的自动交流电源中断系统。 在潜在的危险条件下，例如当检测到T3烟雾探测器报警信号时，电源中断。 或者，便携式设备可以插入具有GFCI断路器的电源插座中，并且当检测到危险警报状况时，将电源脱扣到出口。 当检测到危险警报条件时，信号激活的电路断路器（SACI）可以集成到设备控制电路中，并且对有问题的设备中断电源。 除了防火外，其他危险警报条件可能包括指示有毒烟雾，电机过载，天然气，氡气或一氧化碳的警报。 还公开了信号激活的电路断续器的互连网络。

公开(公告)号：US20150303673A1

公开(公告)日：2015-10-22

申请号：US14789270

申请日：2015-07-01

Applicant: Mark E. GOODSON

Inventor： Mark E. GOODSON

IPC: H02G13/00 ,  H02G1/14 ,  H02H9/04

CPC classification number: H02G13/80 ,  H02G1/14 ,  H02H3/165 ,  H02H9/005 ,  H02H9/04 ,  H02H9/041 ,  H02H9/043 ,  H02H9/044

Abstract: An electrical wiring system/method implementing transient voltage suppression is disclosed. The system/method incorporates HOT, NEUTRAL, GROUND wiring in conjunction with a series drop resistor (SDR) on the HOT conductor that supplies current to the load device. Parallel shunting metal oxide varistors (MOVs) are used in conjunction with corresponding shunt diode rectifiers (SDRs) to suppress transients on the HOT conductor to either the GROUND conductor and/or NEUTRAL conductor. The parallel shunting MOV/SDR pairs may be integrated into a singular structure that is encapsulated in an insulating material to permit implementation of the transient protection wiring system/method into electrical loads and common power distribution equipment such as electrical outlets and power strips.

公开(公告)号：US09093831B2

公开(公告)日：2015-07-28

申请号：US14619619

申请日：2015-02-11

Applicant: Mark E. Goodson

Inventor： Mark E. Goodson

IPC: H02G13/00 ,  H02H9/00 ,  H02H9/04

CPC classification number: H02G13/80 ,  H02G1/14 ,  H02H3/165 ,  H02H9/005 ,  H02H9/04 ,  H02H9/041 ,  H02H9/043 ,  H02H9/044

Abstract: An electrical wiring system/method implementing transient voltage suppression is disclosed. The system/method incorporates HOT, NEUTRAL, GROUND wiring in conjunction with a series drop resistor (SDR) on the HOT conductor that supplies current to the load device. Parallel shunting metal oxide varistors (MOVs) are used in conjunction with corresponding shunt diode rectifiers (SDRs) to suppress transients on the HOT conductor to either the GROUND conductor and/or NEUTRAL conductor. The parallel shunting MOV/SDR pairs may be integrated into a singular structure that is encapsulated in an insulating material to permit implementation of the transient protection wiring system/method into electrical loads and common power distribution equipment such as electrical outlets and power strips.

Abstract translation: 公开了一种实现瞬态电压抑制的电气布线系统/方法。 系统/方法将HOT，NEUTRAL，GROUND布线与HOT导体上的串联降压电阻（SDR）相结合，为负载设备提供电流。 并联分流金属氧化物变阻器（MOV）与相应的并联二极管整流器（SDR）结合使用，以将HOT导体的瞬态抑制到接地导体和/或中性导体。 并联分流MOV / SDR对可以集成到单个结构中，其被封装在绝缘材料中，以允许将瞬态保护布线系统/方法实现为电负载和公共配电设备，例如电插座和电源板。

公开(公告)号：US20150077243A1

公开(公告)日：2015-03-19

申请号：US14552929

申请日：2014-11-25

Applicant: Donald Randolph Hooper ,  Danial L. Aalberg

Inventor： Donald Randolph Hooper ,  Danial L. Aalberg

IPC: H02H3/16 ,  H02H1/00 ,  G08B17/06

CPC classification number: H02H3/165 ,  B60L3/0069 ,  B60L3/04 ,  G01R31/025 ,  G08B17/06 ,  G08B17/10 ,  H01H83/20 ,  H01H83/22 ,  H01H2239/054 ,  H02H1/0007 ,  H02H3/16 ,  Y02T90/14

Abstract: The current invention is an automatic AC power interruption system built into a portable apparatus or integrated into electrical systems and appliance control circuitry. Power is interrupted in potentially hazardous conditions, for example, when a T3 smoke detector alarm signal is detected. Alternatively, a portable device may be plugged into a power outlet having a GFCI breaker and, when a hazard alarm condition is detected, trip off power to the outlet. Signal-activated circuit interrupters (SACIs) may be integrated into appliance control circuitry and interrupt power to a problematic device when a hazard alarm condition is detected. In addition to fire prevention, other hazard alarm conditions may include alarms indicating toxic fumes, motor overload, natural gas, radon, or carbon monoxide. Interconnected networks of signal-activated circuit interrupters are also disclosed.

Abstract translation: 本发明是一种内置于便携式设备中或集成到电气系统和设备控制电路中的自动交流电源中断系统。 在潜在的危险条件下，例如当检测到T3烟雾探测器报警信号时，电源中断。 或者，便携式设备可以插入具有GFCI断路器的电源插座中，并且当检测到危险警报状况时，将电源脱扣到出口。 当检测到危险警报条件时，信号激活的电路断路器（SACI）可以集成到设备控制电路中，并且对有问题的设备中断电源。 除了防火外，其他危险警报条件可能包括指示有毒烟雾，电机过载，天然气，氡气或一氧化碳的警报。 还公开了信号激活的电路断续器的互连网络。

公开(公告)号：US08717036B2

公开(公告)日：2014-05-06

申请号：US13113708

申请日：2011-05-23

Applicant: Ari Wahlroos ,  Janne Altonen

Inventor： Ari Wahlroos ,  Janne Altonen

IPC: H02H3/16 ,  H02H5/10 ,  G01R31/08

CPC classification number: H02H3/165 ,  G01R31/025 ,  G01R31/086 ,  H02H5/105

Abstract: A method and an apparatus for detecting a phase-to-earth fault on a three-phase electric line of an electric network, the apparatus determining a neutral admittance based on a ratio of a difference between zero sequence currents on the three-phase electric line and a difference between zero sequence voltages in the electric network before an earth fault and during the earth fault. The apparatus also compares the determined neutral admittance, to a predetermined operation characteristic to detect a phase-to-earth fault on the three-phase electric line. The predetermined operation characteristic, when presented on an admittance plane, defines a closed area such that the center of the closed area is offset from the origin of the admittance plane towards a negative susceptance direction and/or towards a negative conductance direction.

Abstract translation: 一种用于检测电网三相电线上的相对地故障的方法和装置，该装置基于三相电力线路上的零序电流之差的比值来确定中性导纳 以及接地故障之前和接地故障期间电网中的零序电压之间的差异。 该装置还将确定的中性导纳与预定的操作特性进行比较，以检测三相电线上的相对地故障。 当在导纳平面上呈现时，预定的操作特性限定了闭合区域，使得闭合区域的中心偏离导纳平面的原点朝向负的电纳方向和/或朝向负的电导方向。