公开(公告)号：US10074972B2

公开(公告)日：2018-09-11

申请号：US14688328

申请日：2015-04-16

申请人： ABB TECHNOLOGY AG

发明人： Karl-Heinz Hartung ,  Ralf Bockholt ,  Volker Grafe

IPC分类号： H02H9/02 ,  H02H3/08 ,  H02H3/44 ,  H02H7/04 ,  H02H7/26 ,  H02H7/28

CPC分类号： H02H9/02 ,  H02H3/08 ,  H02H3/083 ,  H02H3/44 ,  H02H7/042 ,  H02H7/267 ,  H02H7/28

摘要： An exemplary electrical network in form of a ring system includes a plurality of infeed transformers which are arranged in parallel between a sourcing busbar/cable system and a ring load busbar/cable system. A junction point connects each infeed transformer to the ring load busbar/cable system. The network includes a plurality of current limiters, where each current limiter is positioned between two junction points. Upon a fault event of an infeed transformer, two current limiters on both sides of a respective junction point of the faulted infeed transformer are simultaneously tripped in order to reduce current in the ring load busbar/cable system.

公开(公告)号：US20180166027A1

公开(公告)日：2018-06-14

申请号：US15305211

申请日：2016-06-30

申请人： SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

发明人： Dan CAO

IPC分类号： G09G3/36 ,  H02H3/20

CPC分类号： G09G3/36 ,  G09G3/3696 ,  G09G2310/0264 ,  G09G2310/08 ,  G09G2330/025 ,  H02H3/20 ,  H02H3/44 ,  H02H9/005 ,  H02H9/04

摘要： A digital power supply circuit and a liquid crystal driving device are provided. The digital power supply circuit includes a controlling module which includes an acquiring unit for acquiring a rate of change of the digital supply voltage at an initial stage, a comparing unit for comparing the rate of change with a preset threshold value, so as to generate a control signal according to the comparing result, and a voltage reducing unit for pulling-down an input voltage of the enable terminal by using the control signal when the rate of change is greater than the preset threshold value.

公开(公告)号：US20170248660A1

公开(公告)日：2017-08-31

申请号：US15383113

申请日：2016-12-19

申请人： LSIS CO., LTD.

发明人： Hae-Yong PARK ,  Chae-Yoon BAE ,  Jung-Wook SIM ,  Gyeong-Ho LEE

IPC分类号： G01R31/40 ,  G01R1/30 ,  G01R15/18

CPC分类号： G01R31/40 ,  G01R1/30 ,  G01R15/18 ,  G01R15/22 ,  G01R31/024 ,  H02H3/08 ,  H02H3/44

摘要： An apparatus for detecting a defect of an electric power system according to one embodiment of the present disclosure includes a first state signal output unit for outputting a first state signal corresponding to a magnetic force generated at a periphery of a line, a second state signal output unit for outputting a second state signal based on a magnitude of a line current and an increase ratio thereof, and a determination unit for determining whether the electric power system is defective or not based on the first state signal and the second state signal.

公开(公告)号：US09716379B2

公开(公告)日：2017-07-25

申请号：US14840272

申请日：2015-08-31

申请人： EATON CORPORATION

发明人： Theodore James Miller ,  Daniel A. Hosko ,  George Gao

IPC分类号： H02H3/00 ,  H02H3/08 ,  G01R15/00 ,  H01H83/00 ,  H02H3/44 ,  H02H1/00

CPC分类号： H02H3/08 ,  G01R15/00 ,  H01H71/123 ,  H01H83/00 ,  H02H1/0046 ,  H02H3/44

摘要： A circuit interrupter that includes a passive integration channel structured to receive an output signal from a di/dt current sensor and generate a first signal output based on the output signal, and an active integration channel structured to receive the output signal from the di/dt current sensor and generate a second signal output based on the output signal that is proportional to the primary current received by the di/dt current sensor. Circuit protection functionality is provided based on the first signal output responsive to the primary current being determined to be greater than a threshold level, current metering and circuit protection functionality is provided based on the second signal output responsive to the primary current being determined to be less than or equal to the threshold level, and a seed current value is provided to the active integrator based on the first signal output.

公开(公告)号：US20170063070A1

公开(公告)日：2017-03-02

申请号：US14840272

申请日：2015-08-31

申请人： EATON CORPORATION

发明人： THEODORE JAMES MILLER ,  DANIEL A. HOSKO ,  GEORGE GAO

IPC分类号： H02H3/08

CPC分类号： H02H3/08 ,  G01R15/00 ,  H01H71/123 ,  H01H83/00 ,  H02H1/0046 ,  H02H3/44

摘要： A circuit interrupter that includes a passive integration channel structured to receive an output signal from a di/dt current sensor and generate a first signal output based on the output signal, and an active integration channel structured to receive the output signal from the di/dt current sensor and generate a second signal output based on the output signal that is proportional to the primary current received by the di/dt current sensor. Circuit protection functionality is provided based on the first signal output responsive to the primary current being determined to be greater than a threshold level, current metering and circuit protection functionality is provided based on the second signal output responsive to the primary current being determined to be less than or equal to the threshold level, and a seed current value is provided to the active integrator based on the first signal output.

摘要翻译： 一种电路断续器，其包括无源集成通道，被构造成从di / dt电流传感器接收输出信号并基于输出信号产生第一信号输出;以及主动积分通道，其被构造为从di / dt接收输出信号 电流传感器，并且基于与di / dt电流传感器接收的初级电流成比例的输出信号产生第二信号输出。 基于响应于初级电流被确定为大于阈值电平的第一信号输出提供电路保护功能，基于响应于初级电流被确定为较小的第二信号输出而提供电流计量和电路保护功能 超过或等于阈值电平，并且基于第一信号输出向有源积分器提供种子电流值。

公开(公告)号：US09564751B2

公开(公告)日：2017-02-07

申请号：US14541660

申请日：2014-11-14

申请人： General Electric Company

发明人： John James Dougherty ,  Marcelo Esteban Valdes

IPC分类号： H02H3/00 ,  H02H7/30 ,  H02H7/26 ,  H02H3/44 ,  H02H3/08 ,  H02H9/02 ,  H02H3/033

CPC分类号： H02H7/30 ,  H02H3/033 ,  H02H3/08 ,  H02H3/44 ,  H02H7/262 ,  H02H9/02

摘要： Circuit protection devices, power distribution systems, and circuit protection device monitoring in a zone selective interlocking (ZSI) system are described. In one example, a circuit protection device for use in a ZSI power distribution system includes a trip mechanism configured to interrupt current flowing through the circuit protection device, and a trip unit operatively coupled to the trip mechanism. The trip unit is configured to monitor current flowing through the circuit protection device, output a first signal when the monitored current is less than a threshold value, and output a second signal when the monitored current is greater than or equal to the threshold value. The first and second signals are different from each other and different than an absence of a signal.

摘要翻译： 描述了区域选择性联锁（ZSI）系统中的电路保护装置，配电系统和电路保护装置监视。 在一个示例中，用于ZSI配电系统的电路保护装置包括配置成中断流过电路保护装置的电流的跳闸机构，以及可操作地耦合到跳闸机构的跳闸单元。 跳闸单元被配置为监视流过电路保护装置的电流，当监视电流小于阈值时输出第一信号，并且当监视电流大于或等于阈值时输出第二信号。 第一和第二信号彼此不同，不同于不存在信号。

公开(公告)号：US20160187408A1

公开(公告)日：2016-06-30

申请号：US14584127

申请日：2014-12-29

申请人： EATON CORPORATION

发明人： DAVID KOLKER ,  CHAITANYA BHALWANKAR ,  BIRGER PAHL ,  STEVEN CHRISTOPHER SCHMALZ ,  ARCHIT AGARWAL

IPC分类号： G01R31/02 ,  G01R31/00 ,  G01R19/165

CPC分类号： G01R31/024 ,  G01R19/16533 ,  G01R31/008 ,  G01R31/025 ,  H02H1/0015 ,  H02H3/044 ,  H02H3/08 ,  H02H3/162 ,  H02H3/44

摘要： An AC arc fault detection module includes a current detecting section having at least one output and being structured to determine whether at least one signal based on a current measured from an AC phase line exceeds at least one corresponding predetermined threshold level and cause the at least one output to indicate that the threshold has been exceeded. The module also includes a processing device structured to: (i) receive the at least one output, (ii) determine whether an arc fault in the AC electrical system has occurred based on at least the at least one output, (iii) determine an estimation of background noise based on at least one signal indicative of a current on the AC phase line, and (iv) adjust the at least one corresponding predetermined threshold level based on the estimation of background noise.

摘要翻译： AC电弧故障检测模块包括电流检测部分，其具有至少一个输出并被构造成确定基于从AC相线路测得的电流的至少一个信号是否超过至少一个对应的预定阈值电平，并且使至少一个 输出以指示已经超过阈值。 所述模块还包括处理装置，其被构造成：（i）接收所述至少一个输出，（ii）至少基于所述至少一个输出来确定所述AC电气系统中的电弧故障是否已经发生，（iii）确定 基于指示AC相线上的电流的至少一个信号估计背景噪声，以及（iv）基于背景噪声的估计调整至少一个对应的预定阈值电平。

公开(公告)号：US20160006239A1

公开(公告)日：2016-01-07

申请号：US14650492

申请日：2013-11-07

申请人： Djamel MEKIMAH

发明人： Djamel MEKIMAH

IPC分类号： H02H9/02

CPC分类号： H02H9/02 ,  H02H3/162 ,  H02H3/33 ,  H02H3/335 ,  H02H3/44 ,  H02H5/12

摘要： An interface for cutting off the power supply for any fault current Id≦300 milliamperes such that: Id≧IPE+k·Ih where IPE represents the current returning to the power source via the protective conductor connecting the exposed conductive parts to earth and Ih (≦10 or 30 milliamperes) represents the current returning to the power source by ways other than via the protective conductor or via an active conductor. Current Ih is therefore likely to travel through a person. In this way, the interface protects people and property against ground insulation faults and against certain direct contacts independently of the earth of the exposed conductive parts and of external conditions. It also protects people in the event of a failure in the protection of an area using the same earth in case of a fault.

摘要翻译： 用于断开任何故障电流Id＆nlE的电源的接口; 300毫安，使得：Id≧IPE + k·Ih其中IPE表示通过将暴露的导电部件接地的保护导体返回到电源的电流和Ih（ ＆nlE; 10或30毫安）表示通过除保护导体以外的方式或通过有源导体返回电源的电流。 因此，目前的我可能会经过一个人。 以这种方式，接口保护人员和财产免受接地绝缘故障的影响，并且不受暴露导电部件的接地和外部环境的影响。 如果在发生故障的情况下，在使用同一地球的地区保护失效的情况下也可以保护人们。

公开(公告)号：US20150326005A1

公开(公告)日：2015-11-12

申请号：US14652841

申请日：2012-12-17

申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

发明人： Hans Kramer

IPC分类号： H02H3/20

CPC分类号： H02H3/20 ,  H02H3/44 ,  H02H7/16 ,  H05B41/2853 ,  H05B41/2858 ,  H05B41/2928 ,  H05B41/2988 ,  Y02B20/208

摘要： An electronic circuit for protecting a load against over-voltage is disclosed. The electronic circuit comprises an input port for receiving a voltage and an output port for feeding the voltage to the load. The electronic circuit further comprises a switching unit arranged to switch on and off the voltage from the input port. Moreover, the electronic circuit comprises a capacitive component arranged to receive the voltage when the switching unit is switched on and is otherwise arranged to feed voltage to the output port. Furthermore, the electronic circuit comprises a comparing unit configured to control the switching unit to be switched off when a value at the output port exceeds a first threshold; and to control the switching unit to be switched on when the value is below a second threshold.

摘要翻译： 公开了一种用于保护负载免受过电压的电子电路。 电子电路包括用于接收电压的输入端口和用于将电压馈送到负载的输出端口。 该电子电路还包括一个开关单元，用于接通和断开来自输入端口的电压。 此外，电子电路包括电容性部件，其布置成在开关单元接通时接收电压，并且另外布置成将电压馈送到输出端口。 此外，电子电路包括比较单元，被配置为当输出端口的值超过第一阈值时控制切换单元被切断; 并且当所述值低于第二阈值时，控制所述切换单元被接通。

公开(公告)号：US09093838B2

公开(公告)日：2015-07-28

申请号：US14051269

申请日：2013-10-10

申请人： LSIS CO., LTD.

发明人： Seung Hyun Bang ,  Hae Yong Park ,  Gyeong Ho Lee ,  Jung Wook Sim ,  Won Joon Choe ,  Min Jee Kim

IPC分类号： G01R31/02 ,  H02H3/44 ,  H02H3/093 ,  H02H9/02

CPC分类号： H02H3/44 ,  H02H3/093 ,  H02H9/02

摘要： The fault current detecting circuit includes: a current detection unit that outputs a current detection signal; a first comparing circuit unit that compares the current detection signal with a predetermined reference current value and outputs a first output signal; a differentiator that differentiates the current detection signal to output a change slope of the current detection signal; a second comparing circuit unit that compares the change slope with a predetermined reference change slope value and outputs a second output signal; a third comparing circuit unit that compares the current detection signal with a predetermined current detection limit reference value and output a third output signal; and a trip determining unit that outputs a trip control signal only when the first output signal and the second output signal are maintained to be received and the third output signal is not received.

摘要翻译： 故障电流检测电路包括：电流检测单元，其输出电流检测信号; 第一比较电路单元，将电流检测信号与规定的基准电流值进行比较，并输出第一输出信号; 微分器，其区分电流检测信号以输出电流检测信号的变化斜率; 第二比较电路单元，其将所述变化斜率与预定的基准变化斜率值进行比较，并输出第二输出信号; 第三比较电路单元，其将所述电流检测信号与预定电流检测限参考值进行比较，并输出第三输出信号; 以及跳闸确定单元，仅在第一输出信号和第二输出信号保持被接收并且没有接收到第三输出信号时输出跳闸控制信号。