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1. 发明专利

JP2002034145A TRANSMISSION LINE PROTECTION DEVICE 失效
公开(公告)号：JP2002034145A
公开(公告)日：2002-01-31
申请号：JP2000217009
申请日：2000-07-18
申请人： CHUBU ELECTRIC POWER , TOSHIBA CORP
发明人： ABE TAKAHISA , ITO MASAHIRO , HORI MASAO , INUKAI MICHIHIKO , SATO SHIGERU , SUGIURA HIDEMASA , HANZAWA KOJI
IPC分类号： G01R31/08 , H02H3/36
摘要： PROBLEM TO BE SOLVED: To prevent degradation in ground fault detection sensitivity in a system with large zero-phase circulating current. SOLUTION: The transmission line protection device uses a current differential relay that identifies any section of ground fault in a power system based on the quantities of electricity of a plurality of specified terminals of two parallel transmission lines. The transmission line protection device is provided with a ground fault detecting means that detects any internal ground fault in the two parallel lines as a whole, a difference current comparing means that compares the magnitude of zero-phase difference current calculated for each of the two parallel lines with the magnitude of zero-phase difference current calculated for the two parallel lines as a whole to detect any ground fault line, and a logic circuit means that opens the circuit breaker in the faulty circuit based on the logical conjunction of the output of the ground fault detecting means and the output of the zero-phase difference current comparing means.

2. 发明专利

JP2011087390A Connecting cord for wiring 审中-公开
标题翻译：连线用于接线
公开(公告)号：JP2011087390A
公开(公告)日：2011-04-28
申请号：JP2009237635
申请日：2009-10-14
申请人： Chubu Electric Power Co Inc , 中部電力株式会社
发明人： ITO YUKI , ABE TAKAHISA
IPC分类号： H02H9/02
摘要： PROBLEM TO BE SOLVED: To prevent devices, such as a circuit breaker, from malfunctioning even though wiring is erroneously carried out when inspection or installation work is conducted.
SOLUTION: A connecting cord 10 for wiring electrically connects two terminals together. The connecting cord is provided with a constant-current diode 20 that controls the current value of current passing through the connecting cord 10 to a limit value or below. According to this, the value of current passing through the connecting cord 10 for wiring can be controlled to the limit value or below. Even though wiring is erroneously carried out during inspection, only a current equal to or lower than the operating current value passes through the operation circuit of the device by, for example, setting the limit value to a value smaller than the operating current value of a device that can malfunction. As a result, malfunction of the device can be avoided.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使在进行检查或安装工作时错误地进行布线，也可以防止断路器等设备发生故障。
解决方案：用于布线的连接线10将两个端子电连接在一起。连接线设置有恒流二极管20，其将通过连接线10的电流的电流值控制到极限值或更低。据此，可以将通过用于布线的连接线10的电流值控制在极限值以下。即使在检查中错误地进行布线，只有等于或低于工作电流值的电流通过例如将极限值设定为小于a的工作电流值的值来通过器件的运行电路设备可能会发生故障。结果，可以避免装置的故障。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2003052121A Protective relay apparatus 审中-公开
标题翻译：保护继电器
公开(公告)号：JP2003052121A
公开(公告)日：2003-02-21
申请号：JP2001239203
申请日：2001-08-07
申请人： Chubu Electric Power Co Inc , Hitachi Ltd , 中部電力株式会社 , 株式会社日立製作所
发明人： WACHI ISAO , NORO JUN , KUMAGAI KAZUAKI , ABE TAKAHISA , ITO MASAHIRO , NAKANISHI JIRO
IPC分类号： H02H3/28
摘要： PROBLEM TO BE SOLVED: To provide a protective relay which can surely cut off a transmission system, even if system failure occurs, when a zero-point transition current exists in the transmission system. SOLUTION: When an internal accident 13a occurs in a cable transmission line system 1a and a grounding occurs in a first phase among three phases, a '1' signal is outputted from an output terminal of a ratio differential relay; and if the signal is inputted to an AND gate via an OR gate, the connection of the logic product of the AND gate is satisfied, a W-phase and an R-phase are detected as normal phases, a line breaker of a failed phase is cut off, cut-off commands are issued to reactor breakers 10d of the normal phases, before the line breakers of the normal phases are cut off, and zero-phase transition currents generated in the line breakers of the normal phases are eliminated.
摘要翻译：要解决的问题：为了提供即使发生系统故障，当传输系统中存在零点转变电流时，也可以切断传输系统的保护继电器。解决方案：当电缆传输线路系统1a发生内部事故13a并且在三相中的第一相中发生接地时，从比率差动继电器的输出端子输出'1'信号; 并且如果信号通过或门输入到与门，则与门的逻辑积的连接被满足，W相和R相被检测为正常相，故障相的断路器在正常相的线路断路器被切断之前，断开指令被发送到正常相的反应堆断路器10d，并且消除了在正常相的线路断路器中产生的零相变电流。

4. 发明专利

JP2002051451A DIGITAL PROTECTIVE RELAY DEVICE 失效
公开(公告)号：JP2002051451A
公开(公告)日：2002-02-15
申请号：JP2000238881
申请日：2000-08-02
申请人： HITACHI LTD , CHUBU ELECTRIC POWER
发明人： NORO JUN , ITO MASAHIRO , ABE TAKAHISA
IPC分类号： H02H3/36
摘要： PROBLEM TO BE SOLVED: To provide a digital protective relay which can cope with all system failures. SOLUTION: A ground current differential relay 14 has a ratio difference calculating unit for processing a zero-phase circulation current i3 and a ratio calculating unit for processing only a ground current i4 and can cope with all system failures.

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