专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2014140123A Metastability preventing synchronization circuit 有权
标题翻译：耐腐蚀性预防同步电路
公开(公告)号：JP2014140123A
公开(公告)日：2014-07-31
申请号：JP2013008475
申请日：2013-01-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIDA MASASHI , KIDO MITSUYASU , TAKAMI KAZUHISA , MARUYAMA TATSUYA
IPC分类号： H03L7/095 , H03K5/00 , H03L7/08
摘要： PROBLEM TO BE SOLVED: To provide a metastability preventing synchronization circuit that can perform synchronization and an accurate signal transfer independent of metastability even in the event of an asynchronous transfer between clocks of the same frequency.SOLUTION: The metastability preventing synchronization circuit includes: a transfer duplication circuit 130 for dividing an input signal 130c into two systems adapted for an asynchronous transfer by clock signals 110a, 120a having the same frequency and different phases, and transferring the two systems synchronously; a pair of metastability detection circuits 140 for individually receiving transferred synchronization output signals 130a, 130b of the two systems output from the circuit 130, respectively, and outputting detection signals 140a, 140c indicating results of detection of metastability; and a transfer selection circuit 150 for selecting one of the signals 130a, 130b of the two systems in which no metastability is detected, to be a transfer output as a synchronization output signal 150a on the basis of the signals 140a, 140c from the pair of circuits 140.
摘要翻译：要解决的问题：即使在相同频率的时钟之间的异步传输的情况下，也可以提供可以执行同步和精确的信号传输的亚稳态防止同步电路。解决方案：亚稳态防止同步电路包括：传输复制电路130，用于将输入信号130c划分为两个具有相同频率和不同相位的时钟信号110a，120a进行异步传输的系统，同时传送两个系统; 一对亚稳态检测电路140，用于分别接收从电路130输出的两个系统的转移同步输出信号130a，130b，并输出指示亚稳态检测结果的检测信号140a，140c; 以及用于选择其中没有亚稳态的两个系统的信号130a，130b中的一个的传输选择电路150，作为基于来自该对的信号140a，140c的同步输出信号150a的传输输出电路140。

2. 发明专利

JP2013081300A Digital protection control device 审中-公开
标题翻译：数字保护控制装置
公开(公告)号：JP2013081300A
公开(公告)日：2013-05-02
申请号：JP2011219936
申请日：2011-10-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATO MITSUO , KIDO MITSUYASU , KOMATSU SHINJI
IPC分类号： H02H3/05 , H02H3/00 , H02H3/02
摘要： PROBLEM TO BE SOLVED: To provide a digital protection control device which can notify occurrence of abnormality to the outside, even when the output command of an abnormality notice signal from an arithmetic processing unit is disabled due to failure of the system bus, or the like.SOLUTION: In a digital protection control device 1 performing protection control of a system by inputting a digital signal indicating the quantity of electricity of a power system 2 and the state of system apparatus, and performing a predetermined digital arithmetic processing, a protection control operation board 30 and a digital I/O board 50 and an abnormality output board 40 are connected by a serial bus 80, the abnormality output board 40 monitors a soundness signal of a predetermined pattern transmitted on the serial bus 80 from the protection control operation board 30, and outputs an abnormality notice signal for notifying the abnormality of the device to the outside when interruption of transmission of that signal is detected.
摘要翻译：要解决的问题：即使当由于系统总线的故障使来自运算处理单元的异常通知信号的输出命令被禁止时，也可以向外部提供能够通知异常发生的数字保护控制装置，或类似物。解决方案：在数字保护控制装置1中，通过输入表示电力系统2的电量的数字信号和系统装置的状态进行系统的保护控制，并进行预定的数字运算处理，控制操作板30和数字I / O板50和异常输出板40通过串行总线80连接，异常输出板40从保护控制操作监视在串行总线80上发送的预定模式的稳定信号并且当检测到该信号的发送中断时，输出用于将设备的异常通知给外部的异常通知信号。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2012222948A Digital protection relay 审中-公开
标题翻译：数字保护继电器
公开(公告)号：JP2012222948A
公开(公告)日：2012-11-12
申请号：JP2011085872
申请日：2011-04-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAMI KAZUHISA , KIDO MITSUYASU , ITO EIJI , YOSHIDA MASASHI
IPC分类号： H02H3/05 , H02H3/02
摘要： PROBLEM TO BE SOLVED: To obtain data saving information stored in a memory from the exterior and a peripheral substrate even when a CPU of an internal substrate of a digital protection relay is broken; and also reduce the load of the CPU and a CPU bus.SOLUTION: The digital protection relay for protecting an electric power system includes: a first memory means for operation; a second memory means for storing an analog input value of an amount of current in the electric power system, and an input-output control value with respect to electric power system equipment of the electric power system; and an arbitration means that prioritizes writing of the analog input value to the memory when a request for the writing of the analog input value and a request for writing of the input-output control value to the memory are simultaneously transmitted to the second memory means.
摘要翻译：要解决的问题：即使当数字保护继电器的内部基板的CPU被破坏时，也从外部和外围基板获得存储在存储器中的数据保存信息; 并减少CPU和CPU总线的负载。解决方案：用于保护电力系统的数字保护继电器包括：用于操作的第一存储器装置; 第二存储装置，用于存储电力系统中的电流量的模拟输入值，以及相对于电力系统的电力系统设备的输入输出控制值; 并且仲裁意味着当将模拟输入值的写入请求和输入输出控制值写入存储器的请求同时发送到第二存储器装置时，将模拟输入值的写入优先于存储器。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2012039735A Digital protection controller 有权
标题翻译：数字保护控制器
公开(公告)号：JP2012039735A
公开(公告)日：2012-02-23
申请号：JP2010177053
申请日：2010-08-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAGAYAMA KAZUYUKI , KIDO MITSUYASU
IPC分类号： H02H3/02
摘要： PROBLEM TO BE SOLVED: To provide a digital protection controller excellent in function expansion performance.SOLUTION: The digital protection controller includes a plurality of digital input/output means for a digital input process that takes state information from a power system device as well as for a digital output process that outputs an operation output for the system device, a protection calculation means that performs protection control calculation for detecting failure in the power system from the information obtained by sampling the analogue information of the power system at a constant cycle, and a serial bus which is provided between the protection calculation means and the plurality of digital input/output means, for signal transfer. A constant cycle of sampling is divided in a normal use period and standby period. A signal transfer which uses a serial bus between the protection calculation means and the plurality of digital input/output means is executed during the normal use period. At a later date, a signal transfer that uses a serial bus between a protection calculation means at the time when a digital input/output means is added and a digital input/output means that has been added is executed during the standby period.
摘要翻译：要解决的问题：提供功能扩展性能优异的数字保护控制器。数字保护控制器包括用于数字输入处理的多个数字输入/输出装置，其接收来自电力系统装置的状态信息以及输出用于系统装置的操作输出的数字输出处理，保护计算装置，根据以恒定周期对电力系统的模拟信息进行采样而获得的信息进行电力系统故障检测的保护控制计算，以及设置在保护计算装置与多个电力系统之间的串行总线数字输入/输出装置，用于信号传输。采样的恒定周期在正常使用期间和待机期间分配。在正常使用期间执行在保护计算装置和多个数字输入/输出装置之间使用串行总线的信号传送。在稍后的日期，在待机期间执行在添加数字输入/输出装置时的保护计算装置和已添加的数字输入/输出装置之间使用串行总线的信号传送。版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2012005213A Multi-terminal power transmission line protection relay system 有权
标题翻译：多端电力线路保护继电器系统
公开(公告)号：JP2012005213A
公开(公告)日：2012-01-05
申请号：JP2010136757
申请日：2010-06-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMATSU SHINJI , KIDO MITSUYASU , YOSHIOKA HIDEYUKI , UNO TOKUSHIRO
IPC分类号： H02H3/28
CPC分类号： H02H7/263 , H02H1/0069 , H02H3/305
摘要： PROBLEM TO BE SOLVED: To provide a power transmission line protection relay system which is based on a current differential principle, being suitable for protecting a power transmission line having many terminals, and easily coping with increase in the number of terminals.SOLUTION: There are provided a protection relay system of a multi-terminal power transmission line in which a multi-terminal power transmission line is divided into adjoining three terminals and two or more division power transmission lines, with a power transmission portion between the terminals as a division power transmission line, and with one terminal taken as a duplicate terminal applied to two division power transmission lines. The protection relay system includes: a protection relay device provided to each terminal of the division power transmission line that contains a current differential relay element that detects an in-division failure using a current measured with each terminal in the division power transmission line; an in-division power transmission line communication path for sharing current information required for the protection relay device; and an inter-division power transmission line communication path for communication between two sets of the protection relay devices of the duplicate terminal applied to two division power transmission lines. The protection relay device that has detected an in-division power transmission line failure executes transfer shielding of other terminals using the in-division power transmission line communication path and the inter-division power transmission line communication path.
摘要翻译：要解决的问题：提供一种基于电流差分原理的输电线路保护继电器系统，适用于保护具有多个端子的输电线路，并且容易应对端子数量的增加。解决方案：提供了一种多端子输电线路的保护继电器系统，其中多端子输电线路被划分成相邻的三个端子和两个或更多个分割输电线路，其中电力传输部分在终端作为分割电力传输线，并且将一个终端作为重复终端应用于两个分割电力传输线。保护继电器系统包括：保护继电器装置，其设置在分电输电线路的每个端子上，该保护继电器装置包含电流差动继电器元件，该电流差动继电器元件使用在分割电力传输线路中的每个端子测量的电流来检测分裂故障; 分配电力传输线通信路径，用于共享保护中继设备所需的当前信息; 以及用于在复用终端的两组保护中继装置之间进行通信的分区间电力传输线通信路径，其应用于两个分割电力传输线。检测到分割电力线路故障的保护继电装置使用分割电力线通信路径和分割间电力传输线通信路径来执行其他终端的传输屏蔽。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2011229201A Distribution line protecting relay unit settling value setting support system 有权
标题翻译：分配线保护继电器单元设置值设置支持系统
公开(公告)号：JP2011229201A
公开(公告)日：2011-11-10
申请号：JP2010093702
申请日：2010-04-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAMURA MASAHIRO , KOMATSU SHINJI , KOBAYASHI TAKASHI , KIDO MITSUYASU
IPC分类号： H02H3/02
摘要： PROBLEM TO BE SOLVED: To prevent irrational settling value setting such as off/on order settling value overlapping by implementing rational settling value setting support between a plurality of distribution line protecting relay units by transmitting/receiving and sharing settling value information between the units.SOLUTION: Between a plurality of distribution line protecting relay units, individually set settling value information is exchanged with each other and shared. The settling value information of any other relay unit is referenced and displayed, thereby supporting a settling value setting operation for an operator of a relay unit device. Otherwise, settling value information for each relay unit device is displayed on a personal computer in which software capable of summarizing, displaying and editing such information is installed beforehand, and edited so as to provide user-desired settling value setting without irrationality or after editing is supported, these settling values are distributed to each relay unit device via a communication path between the personal computer and the relay unit device.
摘要翻译：要解决的问题：为了通过在多个配电线路保护中继单元之间通过发送/接收共享建立值信息来实现合理的建立值设置支持来防止诸如关/订单建立价值重叠的不合理建立值设置单位。解决方案：在多个分配线保护中继单元之间，单独设置的建立值信息彼此交换并共享。参考并显示任何其他中继单元的建立值信息，从而支持中继单元设备的操作者的建立值设置操作。否则，每个中继单元设备的建立价值信息被显示在个人计算机上，其中可以预先安装能够总结，显示和编辑这些信息的软件进行编辑，以便在无理性的情况下或编辑后提供用户期望的建立值设置支持这些建立值通过个人计算机和中继单元设备之间的通信路径分配给每个中继单元设备。版权所有（C）2012，JPO＆INPIT

7. 发明专利

JP2011029465A Current transformer, iron core for current transformer, and method of manufacturing iron core for current transformer 审中-公开
标题翻译：电流互感器，电流互感器铁芯，以及电流互感器铁芯的制造方法
公开(公告)号：JP2011029465A
公开(公告)日：2011-02-10
申请号：JP2009174884
申请日：2009-07-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAMIKATA KIYONORI , MORI SHIGERU , KIDO MITSUYASU
IPC分类号： H01F38/28 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a current transformer that hardly suffers from magnetic saturation and prevents an increase in phase error between a primary current and a secondary output. SOLUTION: In the current transformer wherein a primary current in a primary winding is transformed into a secondary current in a secondary winding according to a turn ratio of the primary winding to the secondary winding which are wound around a first annular iron core, a magnetic member is fixed to a cut part or a slit formed in the annular iron core. The iron core is made by putting a slit in a cut core and then sticking the slit part together. Compared with an iron core formed with a slit but not stuck together, an increase in magnetic resistance and an extreme decrease in exciting impedance are suppressed and the squareness ratio is reduced. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供几乎不受磁饱和的电流互感器，并且防止初级电流和次级输出之间的相位误差的增加。解决方案：在初级绕组中的初级电流根据卷绕在第一环形铁芯上的初级绕组与次级绕组的匝数比在次级绕组中变换为次级电流的电流互感器中，磁性构件被固定到形成在环形铁芯中的切割部分或狭缝。铁芯通过将切口放在切割芯中，然后将狭缝部分粘合在一起而制成。与形成有狭缝但不粘合的铁芯相比，抑制了磁阻的增加和励磁阻抗的极度降低，并且矩形比降低。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2005101244A Printed circuit board type transformer 审中-公开
标题翻译：印刷电路板式变压器
公开(公告)号：JP2005101244A
公开(公告)日：2005-04-14
申请号：JP2003332699
申请日：2003-09-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MASUHARA HIDEKI , SHIBATA YOUZOU , KIDO MITSUYASU , ROKUNOHE TOSHIAKI , KATO SHUNSUKE
IPC分类号： H01F38/24 , H01F38/28
摘要： PROBLEM TO BE SOLVED: To provide a printed circuit board type transformer improving a productive efficiency and being capable of simply corresponding to an arbitrary capacity. SOLUTION: A core forming a closed magnetic circuit is buried in a printed board 4, and a plurality of linear metallic foils 11 formed on both surfaces of the board 4 are connected electrically by through-holes 12, thus constituting the printed board type transformers 1, 2 and 3 in which output windings 6 wound on the core are formed. Output winding terminals (u) and (v) for a plurality of the printed board type transformers 1, 2 and 3 are connected electrically by connecting pins 7a and 7b. The miniaturization/lightening/stabilizing of a quality of a transformer for a meter by digitizing a measuring instrument are attained. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种提高生产效率并能够简单地对应于任意容量的印刷电路板式变压器。解决方案：形成闭合磁路的芯埋在印刷电路板4中，并且形成在电路板4的两个表面上的多个线状金属箔11通过通孔12电连接，从而构成印刷电路板型变压器1,2和3，其中形成绕在芯上的输出绕组6。用于多个印刷电路板式变压器1,2和3的输出绕组端子（u）和（v）通过连接引脚7a和7b电连接。实现了通过数字化测量仪器对仪表的变压器的质量进行小型化/减轻/稳定化。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004072816A Memory control method for digital protective controller 审中-公开
公开(公告)号：JP2004072816A
公开(公告)日：2004-03-04
申请号：JP2002224586
申请日：2002-08-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIDO MITSUYASU , OGAWA EIJI , TAMURA MASAHIRO , SATO MITSUO , SAKAI AKITO
IPC分类号： G06F12/00 , H02H3/00 , H02H3/02
摘要： PROBLEM TO BE SOLVED: To provide a memory control method for a digital protective controller which prevents the erroneous write of data into a bidirectional memory DRAM which accesses it asynchronously between a protective control operating CPU and a network processing CPU. SOLUTION: Within an operating substrate which serves as a bus master for controlling the whole system, a CPU for real time operation which executes the operation at every given electric angle, and a CPU for network communication which is equipped with a communication means for outside of the device, are mounted independently. It is equipped with a DPRAM which has a bidirectional access port. The CPU for real time operation serves as a master for start, and it applies a starting signal to the CPU for network communication in given electric angle cycles. Since it is so arranged as to prevent the data corruption of a shared memory accessed from both each other, delaying a write signal by a time tc for the shared memory more than the delay time td until it sends an access waiting signal to the side of later arrival, data corruption caused by erroneous write does not occur by the control of write timing even at rushing accesses. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2004064892A Digital protection controlling apparatus 有权
公开(公告)号：JP2004064892A
公开(公告)日：2004-02-26
申请号：JP2002220151
申请日：2002-07-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIDO MITSUYASU , OGAWA EIJI , TAMURA MASAHIRO , SATO MITSUO , SAKAI AKITO
IPC分类号： H02H3/02 , H02H3/04
摘要： PROBLEM TO BE SOLVED: To provide a digital protection control apparatus having a means for rapidly responding to a remote operation without limit of a transfer speed by a bus transfer protocol by eliminating necessity for a special purpose human interface substrate or a special purpose substrate having a high-speed communicating function. SOLUTION: A real time calculating CPU for performing all calculations at each electric angle of 30° and a network communicating CPU having a communicating means out of an apparatus are independently mounted on an arithmetic substrate as a bus mater for performing an overall system control, and a dual port memory having a bidirectional access port is provided between the real time calculating CPU and the network communicating CPU. The real time calculating CPU becomes an operation starting master. A start signal is applied to the network communicating CPU at a predetermined period of an electric angle of, for example, 30°. COPYRIGHT: (C)2004,JPO

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式