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1. 发明专利

JP2012079660A Commutation-type ac breaker 审中-公开
标题翻译：交流型断路器
公开(公告)号：JP2012079660A
公开(公告)日：2012-04-19
申请号：JP2010226592
申请日：2010-10-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUZUKI SANETOSHI , YANO MAKOTO , TSUCHIYA KENJI , MORITA AYUMI , SATO SHINDAI
IPC分类号： H01H33/59 , H01H9/54
摘要： PROBLEM TO BE SOLVED: To provide a commutation-type AC breaker which is capable of achieving prompt cutoff of a main circuit current regardless of a power frequency and phase and which improves safety of a worker who performs an inspection and the like on the load side by preventing a commutation current from flowing into the load side.SOLUTION: A commutation-type AC breaker comprises: a main contact 1 which opens and closes a main circuit current flowing into a main circuit between an AC power supply 21 and a load 22; a sub-contact 2 connected electrically in series between the main contact 1 of the main circuit and the load 22; a commutation circuit which connects an electrically and serially connected commutation capacitor 4 and a commutation switch 3A electrically in parallel to the main contact 1; a non-linear resistance 5 for energy absorption connected electrically in parallel to the main contact 1; current detection means 11 provided between the sub-contact 2 of the main circuit and the load 22; and means for cutting off the main circuit current by superimposing the commutation high-frequency vibration current discharged by the commutation capacitor 4 on the main circuit current which flows in the main contact 1.
摘要翻译：要解决的问题：提供一种换向型交流断路器，其能够实现主电路电流的即时切断，而不管功率频率和相位如何，并且提高执行检查等的工人的安全性负载侧通过防止换向电流流入负载侧。解决方案：换向型交流断路器包括：主触点1，其开启和关闭流入AC电源21和负载22之间的主电路的主电路电流; 在主电路的主触点1和负载22之间串联连接的副触点2; 一个换向电路，其将电连接和串联连接的换向电容器4和与主触头1并联的整流开关3A电连接; 用于能量吸收的非线性电阻5与主触点1并联电连接; 设置在主电路的副接点2和负载22之间的电流检测装置11; 以及用于通过将由换向电容器4放电的换向高频振动电流叠加在主触点1中流动的主电路电流来切断主电路电流的装置。（C）2012，JPO＆INPIT

2. 发明专利

JP2015033306A 三相欠相保護装置及び三相欠相保護方法有权
标题翻译：三相开相保护装置和三相开相保护方法
公开(公告)号：JP2015033306A
公开(公告)日：2015-02-16
申请号：JP2013163823
申请日：2013-08-07
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： SUGAWARA YUICHI , SATO SHINDAI , KATO SHUNSUKE
IPC分类号： H02H3/34
摘要：【課題】保護継電器の実装面積を大きくすることなく、コストアップの課題を解決することは勿論、部品点数が増加することなく、確実に機器の保護を行うこと。【解決手段】本発明の三相欠相保護装置は、上記課題を解決するために、三相交流電源のうちの二相の電流を検出する電流検出器と、該電流検出器で検出された前記三相交流電源の二相の電流が入力されるアナログ入力部と、該アナログ入力部からの信号をディジタル信号に変換するアナログディジタル変換部と、該アナログディジタル変換部からのディジタル信号である前記三相交流電源の二相の入力電流値と位相角に基づいて前記三相交流電源の残りの一相の電流値を算出すると共に、この算出された各相の電流値に基づいて三相平衡負荷の欠相を判断する演算処理部と、該演算処理部により三相平衡負荷の欠相が検出された場合に、交流遮断器に開極指令を与える制御信号出力部とを備えていることを特徴とする。【選択図】図1
摘要翻译：要解决的问题：解决成本增加的问题，而不增加保护继电器的安装面积的大小，并且在不增加部件数量的情况下确保地保护设备。解决方案：三相开相保护装置包括：用于检测三相交流电源的两相电流的电流检测器; 模拟输入单元，其中输入由电流检测器检测的三相交流电源的两相电流; 模拟数字转换单元，将来自模拟输入单元的信号转换为数字信号; 计算处理单元，基于作为数字信号的三相交流电源的两相的输入电流值和相位角计算三相交流电源的剩余一相的电流值根据所计算的各相的电流值，确定三相平衡负载的开相; 以及控制信号输出单元，在由所述计算处理单元检测到所述三相平衡负载的开放相位的情况下给予AC断路器的打开命令。

3. 发明专利

JP2007188705A Operating unit of circuit breaker 有权
标题翻译：电路断路器操作单元
公开(公告)号：JP2007188705A
公开(公告)日：2007-07-26
申请号：JP2006004547
申请日：2006-01-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO SHUNSUKE , SATO SHINDAI
IPC分类号： H01H33/48
摘要： PROBLEM TO BE SOLVED: To realize downsizing and space-saving of an operating unit of a circuit breaker and reduce incorrect operation of an operating switch of the circuit breaker.
SOLUTION: The operating unit of the circuit breaker is provided with an operating switch to output an input or release instruction to the circuit breaker of a power equipment, a cover which covers the operating switch and can be opened and closed, an opening and closing detector which detects the opening and closing state of the cover by a light-emitting element and a light receiving element, and an output means which outputs an input or release instruction to the circuit breaker by taking a logical product of the input or release instruction of the operating switch and the detection signal of the open state of the cover output from the opening and closing detector.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：实现断路器的操作单元的小型化和节省空间，并减少断路器的操作开关的错误操作。
解决方案：断路器的操作单元设有操作开关，用于向电力设备的断路器输出输入或释放指令，覆盖操作开关并可打开和关闭的盖子，开口以及闭合检测器，其通过发光元件和受光元件检测盖的打开和关闭状态，以及输出装置，其通过采用输入或释放的逻辑积将输入或释放指令输出到断路器指示操作开关和从开闭检测器输出的盖的打开状态的检测信号。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006003195A Insulation diagnosis device 有权
标题翻译：绝缘诊断装置
公开(公告)号：JP2006003195A
公开(公告)日：2006-01-05
申请号：JP2004179494
申请日：2004-06-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO SHUNSUKE , FUJITA YASUNOBU , SATO SHINDAI , KOGA HIROKATSU , TANIGUCHI YOICHIRO
IPC分类号： G01R31/02 , G01R31/12 , H02H3/00
摘要： PROBLEM TO BE SOLVED: To provide a highly accurate diagnosis result without being affected by the occurrence time of zero-phase voltage. SOLUTION: The zero-phase voltage V0 is peak-held on positive and negative polarities, respectively, to obtain a waveform attenuated with a definite time constant (in the vicinity of electrical angle 120°). The effective value of this waveform is calculated and compared with a predetermined setting value. If the effective value is larger as a result of comparison, a ground fault exists. Then, respective phase voltages found by phase-converting line voltages to calculate the effective value, thereby finding the sum totals of their products to employ the maximum value of them. As a result, the ground fault can be detected on the phase presenting the maximum value. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供高精度的诊断结果，而不受零相电压的发生时间的影响。
解决方案：零相电压V0分别在正极和负极上保持峰值，以获得以一定时间常数（电角度120°附近）衰减的波形。计算该波形的有效值并与预定的设定值进行比较。如果作为比较结果的有效值较大，则存在接地故障。然后，通过对线路电压进行相位转换而求出各自的相位电压，以计算有效值，从而找出其乘积的总和以使用它们的最大值。因此，可以在呈现最大值的相位上检测到接地故障。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2015042069A 電圧検出器及びそれを備えたスイッチギヤ有权
标题翻译：电压检测器和包括其的开关装置
公开(公告)号：JP2015042069A
公开(公告)日：2015-03-02
申请号：JP2013172081
申请日：2013-08-22
申请人：株式会社日立製作所 , Hitachi Ltd
发明人： TAMURA KOZO , SUGAWARA YUICHI , SATO SHINDAI , OKADA NAOYA , TAKAHASHI KEIICHI
IPC分类号： H02B13/02 , G01R15/06 , G01R19/00 , H01H33/66 , H01H33/662 , H01H33/668 , H02B13/065 , H02B13/075
摘要：【課題】主回路電圧を正確に評価できることは勿論、主回路の状態によらず、自身の健全性が確認できること。【解決手段】本発明の電圧検出器10は、上記課題を解決するために、主回路と電気的に接続され、該主回路が課電状態の時は主回路電圧の静電分圧された相電圧若しくは線間電圧の測定が可能であり、かつ、前記主回路が停電状態の時は主回路電圧を模擬した電圧を印加する試験端子部13が実装されていることを特徴とする。【選択図】図1
摘要翻译：要解决的问题：不仅能够准确地评估主电路电压，而且能够在不参考主电路的状态的情况下检查电压检测器本身的可靠性。解决方案：本发明的电压检测器10包括测试端子部13，其电连接到主电路，该主电路可以测量当主电路处于充电状态时通过静电分压主电路电压获得的相电压或线电压，并且施加电压当主电路处于断电状态时，模拟主电路电压。

6. 发明专利

JP2014054032A Switchgear 审中-公开
标题翻译：开关设备
公开(公告)号：JP2014054032A
公开(公告)日：2014-03-20
申请号：JP2012195614
申请日：2012-09-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIZUKUISHI SHOTA , SATO SHINDAI , HOJO TAMOTSU
IPC分类号： H02B3/00
摘要： PROBLEM TO BE SOLVED: To provide a switchgear which detects humans in a wide range without needing changes of a board dimension and detailed structures of the stored object and the installation location, not to mention eliminating the possibility of tardiness of a mechanical contact and deterioration and wear etc. of wiring and the contact.SOLUTION: In a switchgear of this invention, in order to achieve the above object, a non-contact human sensor is installed on a ceiling portion of the switchgear which houses at least a circuit breaker, a disconnector, and a bus bar.
摘要翻译：要解决的问题：提供一种在不需要板尺寸和存储对象的详细结构以及安装位置的情况下在大范围内检测人的开关装置，更不用说消除机械接触和劣化的迟缓的可能性，布线和触点的磨损等。解决方案：在本发明的开关装置中，为了实现上述目的，非接触式人体传感器安装在至少容纳断路器的开关装置的顶部，隔离开关和一个母线。

7. 发明专利

JP2005184906A Method and apparatus of detecting ground fault of distribution system 有权
标题翻译：检测分布系统接地故障的方法与装置
公开(公告)号：JP2005184906A
公开(公告)日：2005-07-07
申请号：JP2003419103
申请日：2003-12-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINKAWA TOMOYOSHI , KAWAMURA NAOTERU , FUJITA YASUNOBU , SATO SHINDAI
IPC分类号： H02H3/34 , H02H3/347 , H02H3/44
摘要： PROBLEM TO BE SOLVED: To reduce the size of an apparatus by detecting ground fault current at a ground fault accident time with high sensitivity by a three-phase current transformer for detecting the ground fault current and overcurrent flowing to a distribution line.
SOLUTION: The apparatus of detecting the ground fault of a distribution system includes first and second storing and holding means 305, 304 which always stores and holds a line voltage 303 and zero-phase current 302 generated at three-phase power line for several cycle part, a phase difference detecting means 307 for obtaining a phase difference of the line voltage from a present value by taking out the stored and held value of one cycle part of the line voltage from the first storing and holding means at the time of detecting zero-phase voltage 301 by a ground fault overvoltage relay, a phase correcting means 308 for phase correcting the zero phase current value stored and held in the second storing and holding means by using the phase difference, a zero-phase current difference arithmetic means 309 for obtaining the current change part by arbitrarily performing the calculation of the difference between the zero-phase current value and the present detected value which are phase corrected, and a ground fault direction relay calculating means 300 for detecting the current change part as the ground fault current.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过检测接地故障电流和流向配电线路的过电流的三相电流互感器，通过高灵敏度的接地故障事件时间检测接地故障电流来减小设备的尺寸。检测分配系统的接地故障的装置包括第一和第二存储和保持装置305,304，其总是存储和保持在三相电力线上产生的线路电压303和零相电流302，几个周期部分，相位差检测装置307，用于通过从第一存储和保持装置取出线电压的一个周期部分的存储和保持值来获得线电压与当前值的相位差，通过接地故障过电压继电器检测零相电压301;相位校正装置308，用于通过使用相位差相位校正存储并保持在第二存储和保持装置中的零相电流值;零相电流差运算装置 309，用于通过任意地执行作为相位cor的零相电流值和当前检测值之间的差的计算来获得电流变化部分以及用于检测作为接地故障电流的电流变化部分的接地故障方向继电器计算装置300。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2009070839A Electronic device 有权
标题翻译：电子设备
公开(公告)号：JP2009070839A
公开(公告)日：2009-04-02
申请号：JP2007234159
申请日：2007-09-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATO SHINDAI , SUGAWARA YUICHI
IPC分类号： H05K9/00 , H05K1/02
摘要： PROBLEM TO BE SOLVED: To avoid malfunction due to electrostatic noise and electromagnetic noise in an electronic device which is provided on the panel of a power panel in a transforming station or the like, and to eliminate a shield structure wherein resin and metal are hardly separated for recovery.
SOLUTION: The electronic device 1 is provided with: a case 8 made of resin that is attached to the panel opening of a power panel; a liquid crystal indicator 7 and an operation switch 6 which are provided on the front face of the case; and semiconductor circuit parts 4 and 5 provided within a case. The indicator and the operation switch are mounted on one surface 10 of a wiring substrate 9, and the semiconductor circuit parts are mounted on the other surface 13 thereof. In the one surface 10 of the wiring substrate, a surface excluding an area wherein at least the indicator and the operation switch are mounted is covered with a conductive member 15.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了避免在设置在变电站等的电源板的面板上的电子设备中由于静电噪声和电磁噪声而导致的故障，并且消除了屏蔽结构，其中树脂和金属几乎没有分开恢复。解决方案：电子设备1设置有：附接到电源面板的面板开口的由树脂制成的壳体8; 液晶指示器7和操作开关6，其设置在壳体的正面上; 以及设置在壳体内的半导体电路部件4和5。指示器和操作开关安装在布线基板9的一个表面10上，半导体电路部分安装在其另一个表面13上。在布线基板的一个表面10中，除了安装有指示器和操作开关的区域之外的表面被导电构件15覆盖。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2007282439A Digital protective relay and its sampling device 有权
标题翻译：数字保护继电器及其采样装置
公开(公告)号：JP2007282439A
公开(公告)日：2007-10-25
申请号：JP2006108521
申请日：2006-04-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGAWARA YUICHI , SATO SHINDAI , MATSUSHIMA MIHO
IPC分类号： H02H3/02
摘要： PROBLEM TO BE SOLVED: To provide a digital protective relay exhibiting high control precision and operating stably, and to provide its sampling device. SOLUTION: In the sampling device 10A of a digital protective relay 1A, a channel switch 12 switches input channels A1-A6 and outputs a detection signal, and an A-D converter 13 samples the detection signal to generate sampling data. A first storage element and a second storage element can store the sampling data at least of the input channels A1-A6. A control section 11 performs switching of a data input switch 14 to the first storage element 15 side and switching of a data output switch 17 to the second storage element 16 side, and switching of the data input switch 14 to the second storage element 16 side and switching of the data output switch 17 to the first storage element 15 side alternately every sampling period. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供具有高控制精度和稳定运行的数字保护继电器，并提供其采样装置。解决方案：在数字保护继电器1A的采样装置10A中，通道开关12切换输入通道A1-A6并输出检测信号，A-D转换器13对检测信号进行采样以产生采样数据。第一存储元件和第二存储元件可以存储至少输入通道A1-A6的采样数据。控制部分11执行将数据输入开关14切换到第一存储元件15一侧并将数据输出开关17切换到第二存储元件16侧，并将数据输入开关14切换到第二存储元件16侧并且每个采样周期交替地切换数据输出开关17到第一存储元件15一侧。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2001218309A DISTRIBUTION BOARD 失效
公开(公告)号：JP2001218309A
公开(公告)日：2001-08-10
申请号：JP2000028120
申请日：2000-02-04
申请人： HITACHI LTD
发明人： FUNATO TAKU , WATANABE TAKAYASU , SATO SHINDAI , KOJIMA KATSUNORI , TANIMIZU TORU
IPC分类号： H02B1/24 , G01R19/00 , H02B1/18 , H02H3/02
摘要： PROBLEM TO BE SOLVED: To provide a distribution board having a current transformer, capable of measuring primary currents over a wide range. SOLUTION: An amplifier 6, that amplifies the output of auxiliary current transformers, is provided to set current which transforms ratio by controlling the amplifying rate of an amplifier in a distribution board provided with current transformers 2a, 2b inserted in a main circuit, the auxiliary current transformers 4a, 4c that transform the output currents of the current transformers, and an operation processing device 7 that measures the current flowing in the main circuit, by measuring the output current of the auxiliary current transformer and protects and controls the main circuit, based on the measured current values.

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