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公开(公告)号：US20150377943A1
公开(公告)日：2015-12-31
申请号：US14846324
申请日：2015-09-04
CPC分类号： G01R29/20 , G01R31/027 , H01H2009/0061
摘要： A tester for testing a transformer is provided. The tester comprises a primary voltmeter and a plurality of secondary voltmeters. The tester may also comprise an ammeter in series with a voltage source configured to apply voltage to the transformer. The primary voltmeter is configured to measure voltage induced across a primary winding of the transformer, while the secondary voltmeters may simultaneously measure voltage outputs at secondary windings of the transformer. The tester is configured to calculate ratios, saturation curves, and knee points for multiple winding combinations based on the measurements simultaneously obtained by the ammeter and the primary and secondary voltmeters.
摘要翻译： 提供了一台用于测试变压器的测试仪。 测试仪包括初级电压表和多个次级电压表。 测试器还可以包括与被配置为向变压器施加电压的电压源串联的电流表。 主电压表被配置为测量变压器的初级绕组上感应的电压，而次级电压表可以同时测量变压器次级绕组的电压输出。 测试仪被配置为基于由电流表和初级和次级电压表同时获得的测量值来计算多个绕组组合的比率，饱和曲线和拐点。
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公开(公告)号：US20150153749A1
公开(公告)日：2015-06-04
申请号：US14382472
申请日：2013-03-18
IPC分类号： G05F1/14
CPC分类号： G05F1/14 , H01H9/0005 , H01H2009/0061
摘要： The invention relates to a method for monitoring an on-load tap changer according to the known “windowing technique,” wherein for synchronization, the current (I) on the diverter switch is continuously detected, the effective value (Ieff) is calculated, which in turn is differentiated. The corresponding point in time, at which the maximum or minimum of the differentiated value occurs, is evaluated to be the moment for the diverter switch leap (tLU), and produces the synchronization impulse.
摘要翻译： 本发明涉及根据已知的“开窗技术”监视有载分接开关的方法，其中为了同步，连续地检测到切换开关上的电流（I），计算有效值（Ieff），其中 反过来又是差异化的。 发生差分值的最大值或最小值的对应时间点被评估为切换开关跳变（tLU）的时刻，并产生同步脉冲。
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公开(公告)号：US20150061806A1
公开(公告)日：2015-03-05
申请号：US14036685
申请日：2013-09-25
申请人： ABB TECHNOLOGY AG
IPC分类号： H02P13/06 , H01F29/04 , H01H33/666 , H02K11/00
CPC分类号： H02P13/06 , H01F29/04 , H01H9/0027 , H01H9/0033 , H01H9/0038 , H01H33/6661 , H01H2009/0061 , H02K11/21
摘要： An on-load tap changer is provided having a plurality of modules, each of which is operable to change taps in a winding of a transformer. A transmission shaft is connected to the modules and is operable upon rotation to effectuate tap changes in the windings. A servo motor rotates the transmission shaft. The servo motor includes a feedback device operable to generate a feedback signal containing information relating to the position of the motor shaft. A servo drive is connected to the servo motor to receive the feedback signal. The servo drive uses the feedback signal to determine and store a total angular displacement of the motor shaft. The servo drive uses the feedback signal and the total angular displacement of the motor shaft to control the operation of the servo motor.
摘要翻译： 有载分接开关具有多个模块，每个模块可操作以改变变压器的绕组中的抽头。 传动轴连接到模块，并且在旋转时可操作以实现绕组中的抽头变化。 伺服电机旋转传动轴。 伺服电动机包括可操作以产生包含与电动机轴的位置相关的信息的反馈信号的反馈装置。 伺服驱动器连接到伺服电机以接收反馈信号。 伺服驱动器使用反馈信号来确定和存储电机轴的总角位移。 伺服驱动器使用反馈信号和电机轴的总角位移来控制伺服电机的运行。
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公开(公告)号：US20140182402A1
公开(公告)日：2014-07-03
申请号：US14233687
申请日：2012-08-09
IPC分类号： F16H19/02
CPC分类号： F16H19/02 , H01H9/0033 , H01H2009/0061 , Y10T74/18792
摘要： The invention relates to a worm gear which is arranged directly on the head of an on-load tap changer and has a housing, a worm, and a worm wheel, wherein means for torque detection comprising at least one radio-scannable surface wave sensor, a rotor antenna and a stator antenna are provided in the interior of the worm gear.
摘要翻译： 本发明涉及一种蜗杆，其直接布置在有载分接开关的头部上，并具有壳体，蜗杆和蜗轮，其中扭矩检测装置包括至少一个无线扫描表面波传感器， 在蜗轮的内部设置有转子天线和定子天线。
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公开(公告)号：US07724152B2
公开(公告)日：2010-05-25
申请号：US11793813
申请日：2006-04-27
申请人： Daisuke Kondo , Hideo Shinohara
发明人： Daisuke Kondo , Hideo Shinohara
IPC分类号： G08B21/00
CPC分类号： H02P13/06 , H01F29/04 , H01H2009/0061 , Y10T307/297
摘要： It is intended to provide a tap change operation monitoring apparatus for an on-load tap changer which can employ relatively simple and low-cost torque sensing means by mitigating an accuracy requirement with regard to detecting a starting time of tap change operation, acquire torque waveform data concerning tap change operation of a diverter switch in an accurate and reliable fashion, and discriminate an abnormal state of the tap change operation with high accuracy. There is provided waveform processing means 47 including a third low-pass filter 70 for generating processed torque waveform data by removing noise components from torque waveform data, first and second low-pass filters 71, 72 having cutoff frequencies lower than a cutoff frequency of the third low-pass filter 70 for generating shaped torque waveform data, and first and second differentiators 73, 74, a multiplier 75 and a maximal value extractor circuit 76 for together extracting time of occurrence of an extremum of a waveform obtained by differentiating the shaped torque waveform data in the time domain within a specific time period as reference operating time.
摘要翻译： 旨在提供一种用于有载分接开关的分接变换操作监视装置，其可以采用相对简单和低成本的扭矩传感装置，通过减轻关于检测分接变换操作的启动时间的精度要求，获取转矩波形 关于切换开关的分接变换操作的数据以精确可靠的方式进行的数据，并且高精度地识别分接变换操作的异常状态。 提供了波形处理装置47，该波形处理装置47包括：第三低通滤波器70，用于通过从转矩波形数据中去除噪声分量来产生处理的转矩波形数据;第一低通滤波器71和第二低通滤波器72具有低于截止频率的截止频率 用于产生成形扭矩波形数据的第三低通滤波器70，以及第一和第二微分器73,74，乘法器75和最大值提取器电路76，用于一起提取通过对成形扭矩进行微分而获得的波形的极值出现时间 在特定时间段内的时域中的波形数据作为参考操作时间。
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公开(公告)号：US20080309437A1
公开(公告)日：2008-12-18
申请号：US12095067
申请日：2006-11-17
申请人： Richard G. Smith , Jason R. Bogusz , Michael G. Ennis , Gary W. Hardesty , Thomas E. Kovanko , Richard P. Mikosz , Andrew D. Pfister , Roy T. Swanson , Keith W. Benson IV
发明人： Richard G. Smith , Jason R. Bogusz , Michael G. Ennis , Gary W. Hardesty , Thomas E. Kovanko , Richard P. Mikosz , Andrew D. Pfister , Roy T. Swanson , Keith W. Benson IV
CPC分类号： H01H75/04 , G01R31/3274 , H01H1/0015 , H01H33/66 , H01H2009/0061 , H01H2071/044
摘要： A fault interrupting and reclosing device includes a circuit interrupter coupled to an actuator. The actuator includes at least one force generating element for generating an opening force for opening the circuit interrupter and for generating a restoring force to close the circuit interrupter. The device further includes a latch to engage the actuator to hold the contacts open once opened. In a preferred arrangement, the device is provided with an automatic mode of operation including a reclose process and a non-reclosing mode of operation. The device also preferably includes a method of determining the end-of-life of a vacuum interrupter monitors characteristics and/or parameters of a fault current or vacuum interrupter operation to predict a percent of life consumed with each fault current interruption operation. A cumulative percent of life consumed may also be determined, and an end-of-life may be predicted based upon the cumulative percent of life consumed.
摘要翻译： 故障中断和重合闸装置包括耦合到致动器的电路断续器。 致动器包括至少一个力产生元件，用于产生用于打开断路器的开启力并产生用于闭合断路器的恢复力。 该装置还包括一个闩锁，用于接合致动器，以便一旦打开就保持触点断开。 在优选的布置中，该装置具有自动操作模式，包括重合闸过程和非重合闸操作模式。 该装置还优选地包括确定真空断路器的寿命终止的方法监测故障电流或真空断续器操作的特性和/或参数，以预测每个故障电流中断操作消耗的寿命百分比。 也可以确定所消耗的生命的累积百分比，并且可以基于所消耗的生命的累积百分比来预测寿命终止。
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7.发明申请公开(公告)号：US20070051595A1
公开(公告)日：2007-03-08
申请号：US10578803
申请日：2004-09-14
申请人： Dieter Dohnal , Rainer Frotscher
发明人： Dieter Dohnal , Rainer Frotscher
IPC分类号： H01H19/00
CPC分类号： G01R31/3274 , H01H1/0015 , H01H2009/0061
摘要： The invention relates to a method for monitoring contact consumption in multiple contact switches of the load-switching type, wherein the selection and the switching is carried out in one step by the movement of switching contacts and which therefore do not have a separate diverter switch. Every time the multiple contact switch is actuated, the load current is measured. The corresponding, previously stored rated stage voltages for the current switching and information on whether it was shifted “up” or “down”, are used to calculate the switching currents of the breaking contacts, the consumption rates are determined on the basis thereof and the volume consumption is accumulated. Said accumulated value is compared with a previously determined threshold value; once this threshold value is reached, warning messages or other messages are generated.
摘要翻译： 本发明涉及一种用于监测负载切换型多接点开关中的接触消耗的方法，其中选择和切换通过开关触点的移动在一个步骤中进行，因此不具有单独的切换开关。 每次启动多接触开关时，都会测量负载电流。 用于当前切换的相应的预先存储的额定级电压以及关于“向上”还是“向下”的信息用于计算断开触点的开关电流，消耗速率基于此确定，并且 体积消耗积累。 将所述累积值与先前确定的阈值进行比较; 一旦达到此阈值，就会生成警告消息或其他消息。
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公开(公告)号：US20060028235A1
公开(公告)日：2006-02-09
申请号：US11139969
申请日：2005-05-31
IPC分类号： G01R31/34
CPC分类号： H01H1/0015 , H01F29/04 , H01H1/60 , H01H2009/0061 , Y10T307/911 , Y10T307/918 , Y10T307/924 , Y10T307/931 , Y10T307/951
摘要： A preventive maintenance tapping technique includes noting a tap position of a load tap changer and noting a duration that the tap position has been held. The duration that the tap position has been held is compared to a threshold value, and the tap position is changed if the tap position has been held for longer than the threshold value. Similarly, a duty cycle monitoring technique for monitoring life of load tap changer contacts includes detecting an arcing event. Arcing surfaces involved in the arcing event are identified and the effects of the arcing event on the arcing surfaces are calculated. Estimates of the erosion on the arcing surfaces are updated, and the estimates are compared to a threshold value. A signal for maintenance is generated when the estimate exceeds the threshold value.
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9.发明申请公开(公告)号：US20060028185A1
公开(公告)日：2006-02-09
申请号：US11019527
申请日：2004-12-23
IPC分类号： G05F1/656
CPC分类号： G05F1/147 , G05F1/14 , H01H2009/0061 , Y10T307/702 , Y10T307/924
摘要： Automatically changing the tap position in a load tap changer includes noting a polarity of a first tap position of a load tap changer. A duration for which one or more consecutive tap positions of the load tap changer collectively have had the noted polarity also is noted. The one or more consecutive tap positions include the first tap position. The duration for which the one or more consecutive tap positions collectively have had the noted polarity is compared to a threshold value. A change is made from the first tap position to a second tap position with a polarity that is different than the noted polarity when the duration for which the one or more consecutive tap positions collectively have had the noted polarity is longer than the threshold value. A change may be made from the second tap position back to the first tap position.
摘要翻译： 在有载分接开关中自动更改分接位置包括注意到有载分接开关的第一个分接位置的极性。 注意到有效抽头变换器的一个或多个连续抽头位置集中地具有所述极性的持续时间。 一个或多个连续的抽头位置包括第一抽头位置。 将一个或多个连续抽头位置集中地具有所述极性的持续时间与阈值进行比较。 当一个或多个连续的抽头位置具有所指示的极性的持续时间长于阈值时，从第一抽头位置到第二抽头位置的变化具有不同于所述极性的极性。 可以从第二分接位置返回到第一分接位置进行改变。
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公开(公告)号：US06962435B2
公开(公告)日：2005-11-08
申请号：US10450589
申请日：2001-12-14
申请人： Bengt-Olof Stenestam
发明人： Bengt-Olof Stenestam
IPC分类号： G01R31/327 , G01R31/333 , H01F29/04 , G01K13/00 , G01K17/06
CPC分类号： G01R31/3274 , G01R31/333 , H01F29/04 , H01H2009/0061
摘要： The present invention discloses a method and apparatus (5) for condition diagnosing of an inductive power device (1), such as a transformer or reactor, having power windings (2) immersed in a fluid (3) being cooled by cooling devices (4). The diagnosing method basically compares and evaluates expected heat flows into and out from the inductive power device (1) system together with an actual and a previous heat content of such a system. From the heat flows the heat balance in the system may be obtained and is used for diagnosing the operation conditions of the inductive power device (1). The results from the condition diagnosing may be used as indicators (70) that can alarm operators, may be sent as a data signal (80) to remote and/or portable display means (85), such as a computer, or may be used as input data to control or simulation systems.
摘要翻译： 本发明公开了一种用于状态诊断感应功率器件（1）的方法和装置（5），所述感应功率器件（1）例如变压器或电抗器具有功率绕组（2），浸没在由冷却装置（4）冷却的流体 ）。 诊断方法基本上比较和评估了进入和离开感应功率器件（1）系统的预期热流以及这种系统的实际和先前的热量。 从热流中可以获得系统中的热平衡，并且用于诊断感应功率器件（1）的操作条件。 条件诊断的结果可以用作可以报警操作者的指示器（70），可以作为数据信号（80）发送到诸如计算机的远程和/或便携式显示装置（85），或者可以使用 作为控制或仿真系统的输入数据。
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