公开(公告)号：EP3321703A1

公开(公告)日：2018-05-16

申请号：EP17201209.8

申请日：2017-11-10

申请人： Fluke Corporation

发明人： Steuer, Ronald ,  Ringsrud, Paul Andrew ,  Worones, Jeffrey ,  Radda, Peter ,  Schmitzer, Christian Karl

IPC分类号： G01R15/14 ,  G01R1/22 ,  G01R19/00

CPC分类号： G01R19/257 ,  G01R1/22 ,  G01R15/14 ,  G01R15/146 ,  G01R19/00 ,  G01R19/2503 ,  G01R19/2509

摘要： Systems and methods for measuring alternating current (AC) voltage of an insulated conductor ( e.g. , insulated wire) are provided, without requiring a galvanic connection between the conductor and a test electrode or probe. A non-galvanic contact (or "non-contact") voltage measurement system includes a conductive sensor, an internal ground guard and a reference shield. A common mode reference voltage source is electrically coupled between the internal ground guard and the reference shield to generate an AC reference voltage which causes a reference current to pass through the conductive sensor. At least one processor receives a signal indicative of current flowing through the conductive sensor due to the AC reference voltage and the AC voltage in the insulated conductor, and determines the AC voltage in the insulated conductor based at least in part on the received signal.

摘要翻译： 用于测量绝缘导体（例如，绝缘导线）的交流（AC）电压的系统和方法被提供，而不需要导体与测试电极或探针之间的电流连接。 非电流接触（或“非接触”）电压测量系统包括导电传感器，内部接地保护和参考屏蔽。 共模参考电压源电耦合在内部接地保护和参考屏蔽之间以生成AC参考电压，该AC参考电压引起参考电流通过导电传感器。 至少一个处理器接收指示由于AC参考电压和绝缘导体中的AC电压而流过导电传感器的电流的信号，并且至少部分地基于接收到的信号来确定绝缘导体中的AC电压。

公开(公告)号：EP3259605A4

公开(公告)日：2018-03-28

申请号：EP15897368

申请日：2015-07-02

申请人： HEWLETT PACKARD ENTPR DEVELOPMENT LP

发明人： KU CHARLES ,  BEMAT M AMIN

IPC分类号： G01R19/25 ,  H02M7/02

CPC分类号： G01R19/2509 ,  G01R19/2503

摘要： According to some examples, systems and methods are provided for voltage sampling using one or more analog-to-digital converters (ADCs) to sense divided portions of a sampled voltage (e.g., of an output signal), using the one or more analog-to-digital converters to provide a plurality of digital values representative of those divided portions, and combining the plurality of digital values to produce a total digital value representative of the sampled voltage. Such systems and methods can achieve a high resolution for the total digital value while permitting use of ADCs that have a resolution lower than would otherwise be required to achieve the high resolution.

公开(公告)号：EP3163706A4

公开(公告)日：2018-02-28

申请号：EP15814491

申请日：2015-05-11

申请人： HITACHI LTD

发明人： KURODA EISUKE ,  SATO YASUO ,  TOMOBE OSAMU ,  YAMAZAKI JUN ,  YATSU MASAHIRO ,  MIYOSHI HARUKI

IPC分类号： H02J3/06 ,  H02J3/16 ,  H02J3/38 ,  H02J13/00

CPC分类号： G01R19/2503 ,  H02J3/06 ,  H02J3/16 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  H02J13/0006

摘要： The present invention addresses the conventional problem of not assuming the time-series output change of a renewable energy and therefore possibly taking an inadequate voltage stability improvement countermeasure. According to the present invention, a voltage stability monitoring device (10) for monitoring the voltage stability of a system is characterized by comprising: an assumed change scenario calculation unit (31) for predicting the output variation of a renewable energy connected to said system and calculating an assumed change time-series power flow state on the basis of said output variation; a time-series voltage stability calculation unit (32) for calculating a node voltage change with respect to demand at each node of said system on the basis of said power flow state calculated by said assumed change scenario calculation unit and calculating a voltage stability indicating the relationship curve between said node voltage and reactive power; and a voltage stability improvement countermeasure search unit (34) for determining a controlled device on which an assumed control is to be performed, according to said voltage stability calculated by said time-series voltage stability calculation unit.

公开(公告)号：EP2800224B1

公开(公告)日：2017-08-16

申请号：EP14161899.1

申请日：2014-03-27

申请人： Siemens Aktiengesellschaft

发明人： Nielsen, Kaj Skov

IPC分类号： H02J3/18 ,  H02J3/38 ,  F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  H02J3/16 ,  G05F1/14

CPC分类号： G01R15/125 ,  F03D7/028 ,  F03D7/048 ,  G01R15/002 ,  G01R19/2503 ,  H02J3/16 ,  H02J3/1821 ,  H02J3/38 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/34

公开(公告)号：EP2450718A3

公开(公告)日：2017-07-05

申请号：EP11187754.4

申请日：2011-11-03

申请人： The Boeing Company

发明人： Martinelli, Robert Matthew

IPC分类号： G01R31/36 ,  G01R19/25

CPC分类号： G01R31/3648 ,  G01R19/2503 ,  G01R31/362 ,  G01R31/3658

摘要： A system and methods for cell telemetry are disclosed. An average magnetizing current in a sampling transformer is forced to about zero amperes by balancing volt-seconds using a voltage clamp mechanism. Furthermore, a pulse driven switch and a synchronized sampling switch are activated, and substantially simultaneously the voltage clamp mechanism deactivated.

摘要翻译： 公开了一种用于小区遥测的系统和方法。 通过使用电压钳位机构平衡伏秒，采样变压器中的平均磁化电流被强制为大约零安培。 此外，脉冲驱动开关和同步采样开关被激活，并且电压钳位机构基本上同时停用。

公开(公告)号：EP3147677A1

公开(公告)日：2017-03-29

申请号：EP16184175.4

申请日：2016-08-15

申请人： Hochschule Konstanz

发明人： Prof. Dr. Fromm, Wilhelm

IPC分类号： G01R19/06 ,  G01R19/165 ,  G01R15/18 ,  G01R19/25 ,  G01R23/16

CPC分类号： G01R15/183 ,  G01R19/06 ,  G01R19/16528 ,  G01R19/16547 ,  G01R19/2503 ,  G01R19/252 ,  G01R23/16

摘要： Die Erfindung geht aus von einer Strommessvorrichtung zur Messung zumindest eines Wechselstroms mit zumindest einer induktiven Koppeleinheit (12), welche dazu vorgesehen ist, zumindest ein elektrisches Primärsignal (14) in zumindest ein elektrisches Sekundärsignal (16) zu wandeln, und mit einer Recheneinheit (18), welche zu einer Bestimmung des Primärsignals (14) aus dem Sekundärsignal (16) vorgesehen ist.
Es wird vorgeschlagen, dass die Recheneinheit (18), dazu vorgesehen ist, zumindest eine höhere Harmonische des Sekundärsignals (16) bei der Bestimmung des Primärsignals (14) zu berücksichtigen.

摘要翻译： 本发明基于用于测量至少一个交流电流的电流测量装置，其具有至少一个感应耦合单元，其旨在将至少一个电主信号转换为至少一个电二次信号，以及计算单元 ，其旨在确定来自次级信号的主信号。 计算单元旨在在确定主信号时考虑次信号的至少一个高次谐波。

公开(公告)号：EP2841953B1

公开(公告)日：2016-06-08

申请号：EP13717013.0

申请日：2013-04-11

申请人： Testo AG

发明人： KAISER, Carolin ,  ANDRESEN, Michael ,  EMBERGER, Holger-Max

IPC分类号： G01R13/02 ,  G01R19/25 ,  G01R1/04 ,  G01R1/067

CPC分类号： G01R1/04 ,  G01R1/06788 ,  G01R13/0209 ,  G01R19/2503

公开(公告)号：EP2841953A1

公开(公告)日：2015-03-04

申请号：EP13717013.0

申请日：2013-04-11

申请人： Testo AG

发明人： KAISER, Carolin ,  ANDRESEN, Michael ,  EMBERGER, Holger-Max

IPC分类号： G01R1/04 ,  G01R1/067

CPC分类号： G01R1/04 ,  G01R1/06788 ,  G01R13/0209 ,  G01R19/2503

摘要： The invention relates to a measuring device (100, 200) for detecting and displaying electric variables, in particular for detecting and displaying voltage, current, and/or resistance values. The measuring device (100, 200) has (a) a housing (112, 212), (b) a measuring device which is arranged in the housing (112, 212), (c) at least one test electrode (114) and/or at least one terminal (274c) for at least one test electrode, said test electrode or terminal being connected to the measuring device in an electrically conductive manner, and (d) a display device (150, 250) which is attached to the housing (112, 212) and which is coupled to the measuring device such that measuring information obtained by the measuring device can be displayed. According to the invention, the display device (150, 250) extends over an edge (113, 213a, 213b) of the housing (212) such that the display device (150, 250) covers both at least one first part of a first outer face (112a) of the housing (112, 212) as well as at least one second part of a second outer face (112b) of the housing (112, 212), said first outer face (112a) and second outer face (112b) being oriented at an angle to each other, in particular perpendicularly.

公开(公告)号：EP2781926A2

公开(公告)日：2014-09-24

申请号：EP14161180.6

申请日：2014-03-21

申请人： Keithley Instruments, Inc.

发明人： Goeke, Wayne

IPC分类号： G01R19/25

CPC分类号： G01R19/2503 ,  G01R15/22

摘要： A system may include two input terminals, e.g., HI and LO, and a floating circuit that is physically separate from the input terminals and includes a gain amplifier. The floating circuit can be surrounded by a conductive enclosure that is electrically connected to the second input terminal. The floating circuit can further switch between input signals received from the first and second input terminals to the gain amplifier and the floating circuit ground.

摘要翻译： 系统可以包括两个输入端子，例如HI和LO，以及物理上与输入端子分离并包括增益放大器的浮置电路。 浮动电路可以被电连接到第二输入端子的导电外壳包围。 浮动电路可以进一步在从第一和第二输入端子接收的输入信号之间切换到增益放大器和浮置电路接地。

公开(公告)号：EP2565653A1

公开(公告)日：2013-03-06

申请号：EP11007172.7

申请日：2011-09-05

申请人： Fluke Corporation Inc.

发明人： Rodehorst, Lutz

IPC分类号： G01R19/25 ,  G06F11/07

CPC分类号： G01R19/2503 ,  G01R35/00

摘要： The present invention relates to a watchdog timer (102) dedicated to the display controller (103) of a voltage detector (100) wherein the watchdog (102) determines a malfunction in the microcontroller (101) and triggers a visual warning to be displayed via the display controller (103). This prevents inaccurate voltage information from being displayed in the case of a microcontroller (101) malfunction and thereby the user from being exposed to the risk of extreme injury through, for example, a high-voltage shock.

摘要翻译： 本发明涉及专用于电压检测器（100）worin看门狗（102）bestimmt在微控制器（101）的故障的显示控制器（103）监视计时器（102），并触发视觉警告经由将要显示 显示控制器（103）。 这被显示在一个微控制器（101）发生故障，从而用户的情况下，从被暴露于极端的损伤通过，例如，高压电击的危险，防止不准确的电压信息。