公开(公告)号：US08749100B2

公开(公告)日：2014-06-10

申请号：US13018268

申请日：2011-01-31

申请人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H01H47/00

CPC分类号： H02H9/002 ,  H02H1/0092 ,  Y10T307/747 ,  Y10T307/858

摘要： In some embodiments, a method is disclosed that includes measuring a waveform of a power source side voltage of a circuit breaker; measuring a waveform of a transmission line side voltage of the circuit breaker; calculating a waveform of a voltage between contacts of the circuit breaker that is a difference between the waveform of the power source side voltage and the waveform of the transmission line side voltage; calculating a waveform of an absolute value of the waveform of the voltage between contacts; extracting a waveform of a component in a frequency band which is lower than a frequency of the power source and higher than a frequency of a DC component from the waveform of the absolute value; detecting a cycle of the extracted waveform; and closing the circuit breaker based on the cycle.

摘要翻译： 在一些实施例中，公开了一种方法，其包括测量断路器的电源侧电压的波形; 测量断路器的传输线侧电压的波形; 计算作为电源侧电压的波形与传输线侧电压的波形之间的差的断路器的触点之间的电压的波形; 计算触点之间的电压的波形的绝对值的波形; 从所述绝对值的波形中提取低于所述电源的频率的频带中的分量的波形，并且高于直流分量的频率; 检测提取的波形的周期; 并根据循环关闭断路器。

公开(公告)号：US09515479B2

公开(公告)日：2016-12-06

申请号：US13800029

申请日：2011-09-20

申请人： Tadashi Koshizuka ,  Shiro Maruyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Shiro Maruyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H02H9/00 ,  H01H9/56 ,  H01H33/59

CPC分类号： H02H9/005 ,  H01H9/563 ,  H01H33/593 ,  Y10T307/858

摘要： According to one embodiment, there is provided an inrush current suppression apparatus that suppresses an inrush current generated when shunt capacitors are connected to a power system, the apparatus including a voltage measurement unit measuring power source voltages, a current measurement unit measuring circuit breaker currents, a polarity determination unit determining the polarities of residual voltages, a phase section detector detecting a phase section in which the polarities of the residual voltages match the polarities of the power source voltages, and a circuit breaker closing unit closing the circuit breaker within the phase section.

摘要翻译： 根据一个实施例，提供一种浪涌电流抑制装置，其抑制分流电容器连接到电力系统时产生的浪涌电流，该装置包括测量电源电压的电压测量单元，测量断路器电流的电流测量单元， 确定残余电压的极性的极性判定单元，检测残留电压的极性与电源电压的极性相对应的相位区间的相位区间检测器，以及在相位区间闭合断路器的断路器闭合单元 。

公开(公告)号：US20140035559A1

公开(公告)日：2014-02-06

申请号：US13980146

申请日：2012-01-13

申请人： Tadashi Koshizuka ,  Kietsu Kudo ,  Tetsuya Nakamoto

发明人： Tadashi Koshizuka ,  Kietsu Kudo ,  Tetsuya Nakamoto

IPC分类号： G01R19/04

CPC分类号： G01R19/04 ,  G01R19/0084 ,  G01R31/3274

摘要： A common tangent line drawn between a rise portion present from the origin to a second reference voltage and a rise portion corresponding to the second reference voltage can be easily generated through a waveform conversion. A transient recovery voltage measuring device includes a memory storing a transient recovery voltage waveform of a multiple frequency, a waveform conversion unit converting the transient recovery voltage waveform, a wave height determination unit determining two points having the same maximum value on the converted waveform, an adjustment unit adjusting the proportional constant of the waveform conversion unit to determine those two points by the wave height determination unit, a contact point detection unit obtaining two points corresponding to the determined two points determined by the wave height determination unit, and a tangent line generation unit generating a first tangent line passing through the detected two points on the transient recovery voltage waveform.

摘要翻译： 通过波形转换可以容易地产生从原点存在的上升部分到第二参考电压之间绘制的公共切线和对应于第二参考电压的上升部分。 瞬态恢复电压测量装置包括存储多频瞬态恢复电压波形的存储器，转换瞬态恢复电压波形的波形转换单元，确定转换波形上具有相同最大值的两个点的波高确定单元， 调整单元，调整波形转换单元的比例常数以由波高确定单元确定这两个点，接触点检测单元获得与由波高确定单元确定的所确定的两个点相对应的两个点，以及切线生成 单元产生通过瞬态恢复电压波形上检测到的两个点的第一切线。

公开(公告)号：US20130176021A1

公开(公告)日：2013-07-11

申请号：US13812255

申请日：2011-07-22

申请人： Keisuke Udagawa ,  Tadashi Koshizuka ,  Minoru Saitoh ,  Yoshimasa Sato ,  Hiroyuki Maehara

发明人： Keisuke Udagawa ,  Tadashi Koshizuka ,  Minoru Saitoh ,  Yoshimasa Sato ,  Hiroyuki Maehara

IPC分类号： G01R33/02

CPC分类号： G01R33/02 ,  G01R33/0064 ,  G01R33/12

摘要： A residual magnetic flux estimation device 1 includes a DC power-source control device 11 which controls a DC power source 300 to apply a DC voltage across two terminals of a Δ connection that is a secondary winding or a tertiary winding, a voltage measuring device 12 which measures a terminal voltage at the primary side of a three-phase transformer 200, a computing device 13 that determines a phase having a high voltage between the two phases other than the phase to which the voltage is applied, and a residual magnetic flux measuring device 14 that measures a phase-to-phase residual magnetic flux between the two phases other than the high-voltage phase, and estimates a measured value of the phase-to-phase residual magnetic flux as a maximum residual magnetic flux in the measurement-target three-phase transformer.

摘要翻译： 剩余磁通估计装置1包括：直流电源控制装置11，其控制直流电源300，在作为次级绕组或三次绕组的三角形连接的两个端子上施加直流电压，电压测量装置12 其测量三相变压器200的初级侧的端子电压，计算装置13，其确定在施加电压的相位以外的两相之间具有高电压的相位，以及剩余磁通量 测量除了高电压相之外的两相之间的相间残留磁通的装置14，并将相位残留磁通的测量值估计为测量相位残余磁通中的最大剩余磁通量， 目标三相变压器。

公开(公告)号：US08217536B2

公开(公告)日：2012-07-10

申请号：US12486186

申请日：2009-06-17

申请人： Tadashi Koshizuka ,  Minoru Saito ,  Koichi Futagami ,  Hiroshi Kusuyama ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Minoru Saito ,  Koichi Futagami ,  Hiroshi Kusuyama ,  Yoshimasa Sato

IPC分类号： H01H33/59 ,  H02H7/04 ,  H02H3/26

CPC分类号： H02H9/002 ,  Y10T307/747

摘要： A first calculation part calculates the phase-to-phase steady-state magnetic flux of the three phases of the power supply. A second calculation part calculates the phase-to-phase residual magnetic flux of the three phases in the primary windings side of the transformer when the circuit breakers interrupt the transformer. A phase detection part detects a voltage phase at which polarity and magnitude of the calculated steady-state magnetic flux and residual magnetic flux coincide. Closing control part firstly causes only the circuit breakers of the two phases to close at the detected voltage phase, and then causes the circuit breaker of the remaining one phase to close.

摘要翻译： 第一计算部分计算电源三相的相间稳态磁通量。 当断路器中断变压器时，第二计算部分计算变压器初级绕组侧三相的相间残余磁通量。 相位检测部检测计算出的稳态磁通和残余磁通的极性和大小一致的电压相位。 关闭控制部分首先使两相断路器在检测到的电压相位闭合，然后使剩余一相的断路器闭合。

公开(公告)号：US20110211288A1

公开(公告)日：2011-09-01

申请号：US13018268

申请日：2011-01-31

申请人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H02H3/20 ,  G06F19/00

CPC分类号： H02H9/002 ,  H02H1/0092 ,  Y10T307/747 ,  Y10T307/858

摘要： In some embodiments, a method is disclosed that includes measuring a waveform of a power source side voltage of a circuit breaker; measuring a waveform of a transmission line side voltage of the circuit breaker; calculating a waveform of a voltage between contacts of the circuit breaker that is a difference between the waveform of the power source side voltage and the waveform of the transmission line side voltage; calculating a waveform of an absolute value of the waveform of the voltage between contacts; extracting a waveform of a component in a frequency band which is lower than a frequency of the power source and higher than a frequency of a DC component from the waveform of the absolute value; detecting a cycle of the extracted waveform; and closing the circuit breaker based on the cycle.

摘要翻译： 在一些实施例中，公开了一种方法，其包括测量断路器的电源侧电压的波形; 测量断路器的传输线侧电压的波形; 计算作为电源侧电压的波形与传输线侧电压的波形之间的差的断路器的触点之间的电压的波形; 计算触点之间的电压的波形的绝对值的波形; 从所述绝对值的波形中提取低于所述电源的频率的频带中的分量的波形，并且高于直流分量的频率; 检测提取的波形的周期; 并根据循环关闭断路器。

公开(公告)号：US20110204727A1

公开(公告)日：2011-08-25

申请号：US13125913

申请日：2010-03-01

申请人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroshi Kusuyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroshi Kusuyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H02J3/42 ,  H01H47/02

CPC分类号： H01H9/563 ,  H01H33/593 ,  Y10T307/587 ,  Y10T307/826 ,  Y10T307/944

摘要： An overvoltage suppression device which suppresses overvoltage that occurs when breakers which turn on/off the connection between a power source bus and a power transmission line, are turned on after the breakers are turned off. The overvoltage suppression device measures the waveform of voltage on the side of the power source and the voltage on the side of the power transmission line, and extracts the waveform of a component in a predetermined frequency band on the basis of the waveform obtained by multiplying the wave shape of the voltage on the side of the power source by the waveform of the voltage on the side of the power transmission line. The breakers are turned on on the basis of a cycle wherein the waveform is peaked.

摘要翻译： 在断路器断开之后，抑制在电源总线与输电线路之间的接通/断开的断路器发生的过电压的过电压抑制装置被接通。 过电压抑制装置测量电源侧的电压波形和电力传输线侧的电压，并且根据通过将电力线的倍增方向获得的波形提取预定频带中的分量的波形 通过电力传输线侧的电压的波形，在电源侧的电压的波形。 基于波形峰值的周期，断路器导通。

公开(公告)号：US09291686B2

公开(公告)日：2016-03-22

申请号：US13812255

申请日：2011-07-22

申请人： Keisuke Udagawa ,  Tadashi Koshizuka ,  Minoru Saitoh ,  Yoshimasa Sato ,  Hiroyuki Maehara

发明人： Keisuke Udagawa ,  Tadashi Koshizuka ,  Minoru Saitoh ,  Yoshimasa Sato ,  Hiroyuki Maehara

IPC分类号： G01R33/02 ,  H02H7/04 ,  H01H47/00 ,  G01R33/00 ,  G01R33/12

CPC分类号： G01R33/02 ,  G01R33/0064 ,  G01R33/12

摘要： A residual magnetic flux estimation device 1 includes a DC power-source control device 11 which controls a DC power source 300 to apply a DC voltage across two terminals of a Δ connection that is a secondary winding or a tertiary winding, a voltage measuring device 12 which measures a terminal voltage at the primary side of a three-phase transformer 200, a computing device 13 that determines a phase having a high voltage between the two phases other than the phase to which the voltage is applied, and a residual magnetic flux measuring device 14 that measures a phase-to-phase residual magnetic flux between the two phases other than the high-voltage phase, and estimates a measured value of the phase-to-phase residual magnetic flux as a maximum residual magnetic flux in the measurement-target three-phase transformer.

摘要翻译： 剩余磁通量估计装置1包括：直流电源控制装置11，其控制直流电源300，跨越Dgr的两个端子施加直流电压; 作为次级绕组或三次绕组的连接，测量三相变压器200的初级侧的端子电压的电压测量装置12，确定在两相之间具有高电压的相位的计算装置13 比施加电压的相位和残留磁通量测量装置14，其测量除了高电压相之外的两相之间的相间残留磁通量，并且估计相位 - 测量目标三相变压器中的相剩余磁通量作为最大剩余磁通量。

公开(公告)号：US08680713B2

公开(公告)日：2014-03-25

申请号：US13125913

申请日：2010-03-01

申请人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroshi Kusuyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Minoru Saito ,  Hiroshi Kusuyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H02J3/00

CPC分类号： H01H9/563 ,  H01H33/593 ,  Y10T307/587 ,  Y10T307/826 ,  Y10T307/944

摘要： An overvoltage suppression device which suppresses overvoltage that occurs when breakers which turn on/off the connection between a power source bus and a power transmission line, are turned on after the breakers are turned off. The overvoltage suppression device measures the waveform of voltage on the side of the power source and the voltage on the side of the power transmission line, and extracts the waveform of a component in a predetermined frequency band on the basis of the waveform obtained by multiplying the wave shape of the voltage on the side of the power source by the waveform of the voltage on the side of the power transmission line. The breakers are turned on on the basis of a cycle wherein the waveform is peaked.

摘要翻译： 在断路器断开之后，抑制在电源总线与输电线路之间的接通/断开的断路器发生的过电压的过电压抑制装置被接通。 过电压抑制装置测量电源侧的电压波形和电力传输线侧的电压，并且根据通过将电力线的倍增方向获得的波形提取预定频带中的分量的波形 通过电力传输线侧的电压的波形，在电源侧的电压的波形。 基于波形峰值的周期，断路器导通。

公开(公告)号：US20130300215A1

公开(公告)日：2013-11-14

申请号：US13800029

申请日：2011-09-20

申请人： Tadashi Koshizuka ,  Shiro Maruyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

发明人： Tadashi Koshizuka ,  Shiro Maruyama ,  Hiroyuki Maehara ,  Yoshimasa Sato

IPC分类号： H02H9/00

CPC分类号： H02H9/005 ,  H01H9/563 ,  H01H33/593 ,  Y10T307/858

摘要： According to one embodiment, there is provided an inrush current suppression apparatus that suppresses an inrush current generated when shunt capacitors are connected to a power system, the apparatus including a voltage measurement unit measuring power source voltages, a current measurement unit measuring circuit breaker currents, a polarity determination unit determining the polarities of residual voltages, a phase section detector detecting a phase section in which the polarities of the residual voltages match the polarities of the power source voltages, and a circuit breaker closing unit closing the circuit breaker within the phase section.

摘要翻译： 根据一个实施例，提供一种浪涌电流抑制装置，其抑制分流电容器连接到电力系统时产生的浪涌电流，该装置包括测量电源电压的电压测量单元，测量断路器电流的电流测量单元， 确定残余电压的极性的极性判定单元，检测残留电压的极性与电源电压的极性相对应的相位区间的相位区间检测器，以及在相位区间闭合断路器的断路器闭合单元 。