公开(公告)号：US20170170644A1

公开(公告)日：2017-06-15

申请号：US15116044

申请日：2015-02-03

申请人： Leach International Europe SA ,  Universite de Lorraine

发明人： Jonathan Andrea ,  Patrick Schweitzer ,  Serge Weber ,  Etienne Tisserand ,  Marc Bournat

IPC分类号： H02H1/00 ,  H01H9/30 ,  H01H33/26 ,  G01R31/333 ,  H02H3/46 ,  H01H9/50 ,  H02H3/04

CPC分类号： H02H1/0015 ,  G01R31/333 ,  H01H9/30 ,  H01H9/50 ,  H01H33/26 ,  H02H3/04 ,  H02H3/46

摘要： A method and a circuit for detecting an electric arc in an electric circuit supplied with AC current during a supply period includes measuring at least one input signal (S) among a current (I) and an input voltage (U) of the electric circuit, supplying a warning signal (A1) to indicate that an electric arc occurs when the input signal (S) is constant over at least one portion of the supply period, digitally sampling the input signal (S) during the measurement thereof according to predetermined levels and, to identify that the input signal (S) is constant, determining the frequency at which each level is reached by the input signal (S) over a predetermined time window, comparing the frequency of each level with a predetermined warning threshold, and issuing the warning signal if the frequency of at least one of the levels is higher than the warning threshold.

公开(公告)号：US09435845B2

公开(公告)日：2016-09-06

申请号：US14230423

申请日：2014-03-31

申请人： SMA Solar Technology AG

发明人： Johannes Lang ,  Thomas Wegener ,  Marcel Kratochvil ,  Holger Behrends ,  Michael Viotto

IPC分类号： G01R31/02 ,  H02H9/08 ,  H01H9/50 ,  H01H33/26 ,  G01R31/333 ,  H02H1/00 ,  H01H83/20 ,  H02H7/20

CPC分类号： G01R31/025 ,  G01R31/333 ,  H01H9/50 ,  H01H33/26 ,  H01H83/20 ,  H02H1/0015 ,  H02H7/205

摘要： The disclosure relates to a method for detecting an arc in a DC circuit. The method includes measuring and analyzing an AC component (IAC) of a current (I) flowing in the circuit and determining at least one parameter of the AC component (IAC). The level of a DC component (IDC) of the current (I) is varied and a degree of correlation between the level of the DC component (IDC) of the current (I) flowing in the DC circuit and the at least one parameter of the AC component (IAC) is determined. An arc is detected and selectively signaled based on the degree of the determined correlation. The disclosure also relates to an apparatus for carrying out the method and to an inverter comprising such an apparatus.

摘要翻译： 本公开涉及一种用于检测直流电路中的电弧的方法。 该方法包括测量和分析在电路中流动的电流（I）的AC分量（IAC）并确定AC分量（IAC）的至少一个参数。 电流（I）的DC分量（IDC）的电平变化，并且在直流电路中流动的电流（I）的直流分量（IDC）的电平与至少一个参数 AC分量（IAC）被确定。 基于所确定的相关度的程度来检测并选择性地发出电弧。 本公开还涉及一种用于执行该方法的装置以及包括这种装置的逆变器。

公开(公告)号：US09362071B2

公开(公告)日：2016-06-07

申请号：US13411011

申请日：2012-03-02

申请人： Randall Boucher ,  Vitaliy Demin ,  James A. Webber ,  John Eastman ,  Christopher D. Farrar

发明人： Randall Boucher ,  Vitaliy Demin ,  James A. Webber ,  John Eastman ,  Christopher D. Farrar

IPC分类号： G08B21/00 ,  H01H33/56 ,  H01H33/26

CPC分类号： H01H33/563 ,  H01H33/26

摘要： A circuit breaker monitoring system may monitor both at least one gas characteristic of a gas surrounding the circuit breaker and at least one fault arc energy characteristic. The monitored characteristics may be used to forecast maintenance events. The monitored characteristics may be used to control the operation of the circuit breaker.

摘要翻译： 断路器监控系统可以监测断路器周围的气体的至少一种气体特性和至少一种故障电弧能量特性。 监控的特性可用于预测维护事件。 所监测的特性可用于控制断路器的操作。

公开(公告)号：US20140210485A1

公开(公告)日：2014-07-31

申请号：US14230423

申请日：2014-03-31

申请人： SMA Solar Technology AG

发明人： Johannes Lang ,  Thomas Wegener ,  Marcel Kratochvil ,  Holger Behrends ,  Michael Viotto

IPC分类号： G01R31/02

CPC分类号： G01R31/025 ,  G01R31/333 ,  H01H9/50 ,  H01H33/26 ,  H01H83/20 ,  H02H1/0015 ,  H02H7/205

摘要： The disclosure relates to a method for detecting an arc in a DC circuit. The method includes measuring and analyzing an AC component (IAC) of a current (I) flowing in the circuit and determining at least one parameter of the AC component (IAC). The level of a DC component (IDC) of the current (I) is varied and a degree of correlation between the level of the DC component (IDC) of the current (I) flowing in the DC circuit and the at least one parameter of the AC component (IAC) is determined. An arc is detected and selectively signaled based on the degree of the determined correlation. The disclosure also relates to an apparatus for carrying out the method and to an inverter comprising such an apparatus.

摘要翻译： 本公开涉及一种用于检测直流电路中的电弧的方法。 该方法包括测量和分析在电路中流动的电流（I）的AC分量（IAC）并确定AC分量（IAC）的至少一个参数。 电流（I）的DC分量（IDC）的电平变化，并且在直流电路中流动的电流（I）的直流分量（IDC）的电平与至少一个参数 AC分量（IAC）被确定。 基于所确定的相关度的程度来检测并选择性地发出电弧。 本公开还涉及一种用于执行该方法的装置以及包括这种装置的逆变器。

公开(公告)号：US08091429B2

公开(公告)日：2012-01-10

申请号：US12855200

申请日：2010-08-12

申请人： H. Bruce Land, III

发明人： H. Bruce Land, III

IPC分类号： G01L9/00 ,  H02H3/00

CPC分类号： H01H33/26 ,  H01H9/50 ,  H01H35/2678 ,  H01H35/34

摘要： A pressure sensor for detecting an electric arc in an electrical switchboard, the sensor being in an enclosed case containing a conical opening, the case being placed in the switchboard. A pressure switch in the sensor is attached to the interior of the case and is electrically connected to a circuit board for transmitting a signal when a contact in the pressure switch is closed. When a pressure wave created by the electric arc enters the case through the conical opening it forces a contact on the pressure switch to close thereby completing a circuit with the circuit board which transmits the signal to, for example, a central processor, to turn off the source of electricity thereby quenching the electric arc.

摘要翻译： 一种用于检测电气配电盘中的电弧的压力传感器，所述传感器处于包含锥形开口的封闭壳体中，所述壳体被放置在所述配电盘中。 传感器中的压力开关连接到壳体的内部，并且在压力开关中的触点闭合时电连接到用于传输信号的电路板。 当由电弧产生的压力波通过锥形开口进入壳体时，迫使压力开关上的触点闭合，从而与电路板完成电路，该电路板将信号发送到例如中央处理器以关闭 电源从而淬火电弧。

公开(公告)号：US20110036175A1

公开(公告)日：2011-02-17

申请号：US12855200

申请日：2010-08-12

申请人： H. Bruce Land, III

发明人： H. Bruce Land, III

IPC分类号： G01L9/00

CPC分类号： H01H33/26 ,  H01H9/50 ,  H01H35/2678 ,  H01H35/34

摘要： A pressure sensor for detecting an electric arc in an electrical switchboard, the sensor being in an enclosed case containing a conical opening, the case being placed in the switchboard. A pressure switch in the sensor is attached to the interior of the case and is electrically connected to a circuit board for transmitting a signal when a contact in the pressure switch is closed. When a pressure wave created by the electric arc enters the case through the conical opening it forces a contact on the pressure switch to close thereby completing a circuit with the circuit board which transmits the signal to, for example, a central processor, to turn off the source of electricity thereby quenching the electric arc.

摘要翻译： 一种用于检测电气配电盘中的电弧的压力传感器，所述传感器处于包含锥形开口的封闭壳体中，所述壳体被放置在所述配电盘中。 传感器中的压力开关连接到壳体的内部，并且在压力开关中的触点闭合时电连接到用于传输信号的电路板。 当由电弧产生的压力波通过锥形开口进入壳体时，迫使压力开关上的触点闭合，从而与电路板完成电路，该电路板将信号发送到例如中央处理器以关闭 电源从而淬火电弧。

公开(公告)号：US20080087115A1

公开(公告)日：2008-04-17

申请号：US11868111

申请日：2007-10-05

申请人： Masahiro Hanai ,  Haruhisa Wada ,  Hirokazu Takagi ,  Shiro Maruyama ,  Masayuki Sato

发明人： Masahiro Hanai ,  Haruhisa Wada ,  Hirokazu Takagi ,  Shiro Maruyama ,  Masayuki Sato

IPC分类号： G01M19/00

CPC分类号： G01K1/024 ,  G01K13/00 ,  H01H1/0015 ,  H01H11/0062 ,  H01H33/26 ,  H01H2011/0068 ,  H01T21/00

摘要： To shorten a period of time necessary for performing routine inspections and reduce costs by monitoring a state such as a contact failure of a switching equipment which constitutes a power reception circuit or a branch circuit of a substation through a simple construction. A sensor attached IC tag application high voltage equipment is constructed by detachably mounting a sensor attached IC tag at a position where a sensor of a sensor attached IC tag obtains a physical quantity of a detection target, wherein the sensor attached IC tag is configured to communicate with an externally located IC tag reader.

摘要翻译： 通过简单的结构，通过监视构成接收电路或变电站的分支电路的交换设备的接触故障等状态来缩短进行日常检查所需的时间并降低成本。 传感器附接的IC标签应用高压设备通过将传感器附接的IC标签可拆卸地安装在传感器附接的IC标签的传感器获得检测对象的物理量的位置而构成，其中传感器附接的IC标签被配置为通信 带有外部定位的IC标签读卡器。

公开(公告)号：US20070001677A1

公开(公告)日：2007-01-04

申请号：US10573818

申请日：2004-09-17

申请人： Bernd Adam ,  Michael Hahn

发明人： Bernd Adam ,  Michael Hahn

IPC分类号： G01R31/327 ,  G01R31/02

CPC分类号： H01H1/0015 ,  H01H9/50 ,  H01H33/26 ,  H01H2001/0026

摘要： A device for detecting wear of switching contacts in an electric switch appliance is disclosed, the wear of the contacts being caused at least at a pair of switching contacts appliance. The device includes a lightwave guide and a detector. A light exiting from at least one light source is capable of being injected into the lightwave guide and guided by the lightwave guide up to the detector. The lightwave guide is arranged relative to the pair(s) of switching contacts, such that the intensity of the light injected in the lightwave guide, which is measured by the detector, decreases in the switching appliance as the number of wear particles of contacts generated by the wear of the contacts increases.

摘要翻译： 公开了一种用于检测电开关器具中的开关触点的磨损的装置，至少在一对开关触头装置处引起触点的磨损。 该装置包括光波导和检测器。 从至少一个光源射出的光能够被注入光波导并被光波导引导到检测器。 光波导相对于一对或多个开关触点布置，使得由开关装置测量的在光波导中注入的光的强度在开关器具中随着产生的触点的磨损粒子的数量而减小 通过接触的磨损增加。

公开(公告)号：US06774639B1

公开(公告)日：2004-08-10

申请号：US10070251

申请日：2002-07-10

申请人： Joseph Unsworth

发明人： Joseph Unsworth

IPC分类号： G01R3106

CPC分类号： H01H33/26 ,  G01R31/027 ,  G01R31/1227

摘要： An apparatus for detecting partial discharge in on-line high voltage electrical equipment containing a dielectric, such as high voltage transformers. The apparatus includes an ultrasonic transducer and an annular capacitive plate for detecting, respectively, the ultrasonic pulse and the radio frequency pulse generated by the occurrence of partial discharge in the equipment. The outputs of the transducers are analyzed by signal processing means to allow determination of occurrences of true partial discharge from the plethora of electrical noise normally present in on-line voltage equipment

摘要翻译： 一种用于在包含电介质的在线高压电气设备中检测局部放电的装置，例如高压变压器。 该装置包括超声波换能器和环形电容板，用于分别检测在设备中由局部放电发生而产生的超声脉冲和射频脉冲。 换能器的输出由信号处理装置进行分析，以允许确定通常存在于在线电压设备中的过多电噪声的真实局部放电的出现

公开(公告)号：US20030214307A1

公开(公告)日：2003-11-20

申请号：US10392532

申请日：2003-03-20

发明人： Chang-Won Kang ,  Gil-Soo Choi

IPC分类号： H01H009/50 ,  G01R031/08

CPC分类号： H01H33/26 ,  G01R31/1254 ,  G01R31/1272 ,  H02H1/0015

摘要： Disclosed is a device for detecting a partial discharge of power equipment. EM (electromagnetic wave) sensors detect EM signals from a partial discharge in a metal clad switchgear, a power cable, and a GIS. EM detectors amplify the signals from the sensors, and output only noise-removed IF signals. A pulse generator integrates the IF-processed EM to compare the integrated value with a previous value, and outputs a pulse according to a partial discharge. An EM level processor compares the IF-processed EM with reference voltages to output EM pulses of a plurality of levels. A waveform shaper shapes the pulses. A controller calculates the average number of pulses per 1 cycle by counting the partial discharge pulses for a predetermined time, receives the waveform-shaped pulses to calculate the partial discharge amount, and transmits the calculated amount, combined with the average number, to an external monitoring system.

摘要翻译： 公开了一种用于检测电力设备的局部放电的装置。 EM（电磁波）传感器检测金属包层开关柜，电力电缆和GIS中的局部放电的EM信号。 EM检测器放大来自传感器的信号，仅输出噪声消除的IF信号。 脉冲发生器将IF处理的EM积分，将积分值与先前值进行比较，并根据局部放电输出脉冲。 EM电平处理器将IF处理的EM与参考电压进行比较以输出多个电平的EM脉冲。 波形整形器对脉冲进行整形。 控制器通过对预定时间的局部放电脉冲进行计数来计算每1个周期的平均脉冲数，接收波形脉冲以计算局部放电量，并将计算出的数量与平均数相结合，发送到外部 监视系统。