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1. 发明专利

JP2006258485A System for localizing ground fault section 有权
标题翻译：用于本地化地面故障部分的系统
公开(公告)号：JP2006258485A
公开(公告)日：2006-09-28
申请号：JP2005073376
申请日：2005-03-15
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO , HOTTA TAKESHI
IPC分类号： G01R31/08 , G01R31/02 , H02H3/00 , H02H7/26
CPC分类号： Y04S10/522
摘要： PROBLEM TO BE SOLVED: To provide an accurate and simple system for localizing a ground fault section. SOLUTION: The system comprises a zero-phase current detection means 1 and a power source voltage detection means 2 each of which is provided with an automatic switch and which are installed at each spot to be monitored in pairs, a ground fault detection section 3 which decides the presence or absence of a ground fault by comparing the magnitude of a zero-phase current captured from a service wire by the zero-phase current detection means 1 at each spot to be monitored to a threshold level and which synchronously stores the value of the zero-phase current when decided to be a ground fault and the power source voltage immediately before the moment when decided to be the ground fault, a ground fault phase derivation section 4 which derives a ground fault phase and the direction of a ground fault spot at each spot to be monitored from the phase difference between the power source voltage and the zero-phase current stored by the ground fault detection section 3 at each spot to be monitored which has been decided to be a ground fault, and an evaluation section 6 which derives a ground fault section out of the sections at the front and the rear of the spot to be monitored on the basis of the ground fault phase and the direction of the ground fault spot derived by the ground fault phase derivation section 4. The evaluation section 6 evaluates that a section having the largest sum of the zero-phase current concentrated in the section between the spots to be monitored is a ground fault section on the basis of the value of the zero-phase current held by the ground fault detection section 3 and the ground fault phase and the direction of the ground fault spot derived by the ground fault phase derivation section. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于定位接地故障部分的精确和简单的系统。解决方案：该系统包括零相电流检测装置1和电源电压检测装置2，每个电源电压检测装置2设置有自动开关，并且安装在成对监视的每个点处，接地故障检测第3节，其通过将待监视的每个点处的零相电流检测装置1从业务线捕获的零相电流的大小与阈值电平进行比较来决定是否存在接地故障，并同步存储确定为接地故障时的零相电流值，以及在决定为接地故障的瞬间之前的电源电压时，导出接地故障相位的接地故障相位导出部分4和接地故障点在要监视的每个点处的电源电压和接地故障检测部分3存储的零相电流之间的相位差要监视的每个点，以进行监视已经被确定为接地故障的评估部分6以及基于接地故障阶段和待监测点的待监测点的前后部分中的接地故障部分的评估部分6 由接地故障相位导出部分4导出的接地故障点。评估部分6评估集中在要监视的点之间的部分中具有最大的零相电流之和的部分是基于的接地故障部分由接地故障检测部3保持的零相电流的值和接地故障相位以及由接地故障相位导出部导出的接地故障点的方向。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2004266900A Method of protecting single-phase distribution line from lightning damage 有权
公开(公告)号：JP2004266900A
公开(公告)日：2004-09-24
申请号：JP2003052785
申请日：2003-02-28
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： SUGIMOTO HITOSHI , ASAOKA YOSHINOBU , NAKADA KAZUO
IPC分类号： H02H9/06 , H02G7/00 , H02G13/00
摘要： PROBLEM TO BE SOLVED: To provide a method of protecting a single-phase distribution line from thunder, which enables omission of attaching a lightning protector, while maintaining low thunder short-circuit damage rate. SOLUTION: This method omits attachment of lightning protectors to only one phase provided for all utility poles, in the single-phase distribution line which is constituted by drawing out two phases from a three-phase distribution line, where lightning protectors are attached to all phases as regards all utility poles. COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2007143313A Method for controlling power distribution line voltage 审中-公开
标题翻译：用于控制功率分配线路电压的方法
公开(公告)号：JP2007143313A
公开(公告)日：2007-06-07
申请号：JP2005334680
申请日：2005-11-18
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO
IPC分类号： H02J3/12 , H02J3/38
CPC分类号： Y02E10/763
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling power distribution line voltage for transmitting a voltage corresponding to a load current of a distribution line from which variations of distributed power supply are excluded without affecting output variations in the distributed power supply. SOLUTION: In this method for controlling the power distribution line voltage for a power distribution system, the distribution lines are branched from a bus bar of a transformer for power distribution in a substation, and the unstable-output distributed power supply is linked with some of the distribution lines through a connection line. Voltage/current detectors 14, 15 for the bus bar provided at the bus bar generate voltage/current values of the transformer for power distribution, and a current detector 18 for linkage provided at a linkage power distribution line of the substation generates current value of the linkage power distribution line. The current value of the linkage power distribution line is subtracted from the current value of the transformer for power distribution in a control device 13, a voltage drop value is obtained based on simulated impedance corresponding to the subtracted current value, and the subtracted current value to switch the taps based on the gap between the voltage value from the voltage detector for the bus bar and the voltage drop value. The current detector for linkage can be provided between the connecting line inside the distributed power station or the linkage portion (a) of the linkage power distribution line and the substation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于控制配电线路电压的方法，用于传输对应于分布式电源的变化的配电线路的负载电流的电压，而不影响分布式电源的输出变化。
解决方案：在这种用于控制配电系统的配电线路电压的方法中，配电线路从变电站的母线分支，用于变电站配电，不稳定输出分布式电源连接一些配电线路通过连接线。汇流条上设置的总线的电压/电流检测器14,15产生用于配电的变压器的电压/电流值，并且在变电站的联动配电线路处设置用于联动的电流检测器18产生电流值联动配电线路。从控制装置13中用于配电的变压器的当前值中减去联动配电线的当前值，基于与减法电流值对应的模拟阻抗获得电压降值，并将减去的电流值根据母线电压检测器的电压值与电压降值之间的间隙切换抽头。用于联动的电流检测器可以设置在分布式发电站内部的连接线路或联动配电线路和变电站的连接部分（a）之间。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2007116774A Power distribution system and on-street reactor device 审中-公开
标题翻译：功率分配系统和路由反应器设备
公开(公告)号：JP2007116774A
公开(公告)日：2007-05-10
申请号：JP2005303008
申请日：2005-10-18
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO , HASHIMOTO NORIYASU
IPC分类号： H02H9/08 , H01H85/042 , H02H3/08
摘要： PROBLEM TO BE SOLVED: To provide a power distribution system which can compensate a one-line grounding current surely and inexpensively even in the case that distribution lines of large capacitance to the earth are mixed and even if the switching of distribution systems is performed, and an on-street reactor device.
SOLUTION: On-street reactor devices RC1-RC9 which have reactors for compensating grounding currents for distribution lines C1-C9 of cables arranged underground and are arranged on the ground, are distributed to correspond to the magnitude of the capacitance to the earth of the distribution lines C1-C9.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种能够确实地和廉价地补偿单线接地电流的配电系统，即使在大地电容分配线混合的情况下，即使分配系统的切换是执行和路上反应器装置。
解决方案：具有用于补偿地下布置并布置在地面上的电缆的配电线路C1-C9的接地电流的电抗器装置RC1-RC9被分配以对应于地球电容的大小的分配线C1-C9。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006180685A Partial discharge detection method and partial discharge detecting apparatus 审中-公开
标题翻译：部分放电检测方法和部分放电检测装置
公开(公告)号：JP2006180685A
公开(公告)日：2006-07-06
申请号：JP2005259189
申请日：2005-09-07
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO , KYOGOKU KIICHIRO
IPC分类号： H02B3/00 , G01N31/00 , G01R31/12
摘要： PROBLEM TO BE SOLVED: To provide a partial discharge detection method that enables detection as to whether partial discharge has ever occurred in the past from a molded switch, for changing over distribution line systems of an on-road apparatus.
SOLUTION: This is a method of detecting the partial discharge of the molded switch 4 for changing over the distribution line systems incorporated in an enclosed casing 2 of the on-road apparatus 1. A liquid 20 containing NOx in solution is arranged inside the enclosed casing 2. This partial discharge detection method detects the presence of the generation of the partial discharge by analyzing at least one of nitric acid concentration and nitrous acid concentration from the liquid 20. The presence of the generation of the partial discharge may be detected, by analyzing at least one of nitric acid concentration and nitrous acid concentration from condensed water attached to the inside of the enclosed casing 2.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种局部放电检测方法，其能够检测过去是否从模制开关发生局部放电，以便改变路上设备的配电线路系统。解决方案：这是一种检测模制开关4的局部放电的方法，用于切换装在路上装置1的封闭壳体2中的配电线路系统。将含有溶液中的NOx的液体20布置在这种局部放电检测方法通过从液体20中分析硝酸浓度和亚硝酸浓度中的至少一种来检测是否存在局部放电的产生。可以检测是否存在产生局部放电通过从连接到封闭壳体2的内部的冷凝水分析硝酸浓度和亚硝酸浓度中的至少一种。（C）2006年，JPO＆NCIPI

6. 发明专利

JP2007278794A Method for detecting partial discharge 有权
标题翻译：检测部分放电的方法
公开(公告)号：JP2007278794A
公开(公告)日：2007-10-25
申请号：JP2006104237
申请日：2006-04-05
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO , TANAKA KUNIAKI
IPC分类号： G01R31/12 , H01H33/00 , H02B13/065
摘要： PROBLEM TO BE SOLVED: To enable even a minute amount of discharge to be detected and facilitate a detection operation in which an ultrasonic sensor is pressed and contacted with a mold switch, when detecting the occurrence of a partial discharge from the mold switch which is used for switching a system of underground distribution lines, by using the ultrasonic sensor. SOLUTION: A method for detecting the partial discharge, which presses and contacts the ultrasonic sensor 14 with the mold switch 4 being built in an on-street equipment 1 and used for switching the system of distribution lines, and determines the existence of the partial charge based on a signal waveform obtained from the ultrasonic sensor 14, is characterized in that a rubber contact medium 15 is attached to a measurement surface of the ultrasonic sensor 14. Chloroprene rubber is used as the rubber material. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了能够检测到甚至少量的放电，并且便于检测到来自模具开关的局部放电的发生的超声波传感器被按压并与模具开关接触的检测操作用于通过使用超声波传感器切换地下配电线路系统。解决方案：一种用于检测局部放电的方法，其中模具开关4被建立在街上设备1上并用于切换配线的系统而按压和接触超声波传感器14，并且确定存在基于从超声波传感器14获得的信号波形的部分电荷的特征在于，橡胶接触介质15附接到超声波传感器14的测量表面。氯丁二烯橡胶用作橡胶材料。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2008148555A Method of protecting single-phase distribution line from damages due to thunder 有权
标题翻译：保护单相分配线的方法由于THUNDER造成的损害
公开(公告)号：JP2008148555A
公开(公告)日：2008-06-26
申请号：JP2008026457
申请日：2008-02-06
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： SUGIMOTO HITOSHI , ASAOKA YOSHINOBU , NAKADA KAZUO
IPC分类号： H02H9/06 , H02H9/04
摘要： PROBLEM TO BE SOLVED: To provide a method of protecting single-phase distribution line from damages due to thunder which can omit installation of the thunder damage protection method, while maintaining low thunder damage protection rate.
SOLUTION: The method of protecting single-phase distribution line from damages due to thunder omits installation of the protection method against damages due to only one phase, determined for all the electric poles in the single-phase distribution line, constituted by extracting two phases from a three-phase distribution line where the protection method against damages due to thunder which are installed for all the phases of all the electric poles.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种保护单相配电线路免受雷电损坏的一种方法，可以避免雷电损坏保护方法的安装，同时保持低的雷击损坏保护率。
解决方案：保护单相配电线路免受雷电损坏的保护方法，省略了保护方法的安装，防止由单相配电线路中所有电极确定的仅一相损坏，由提取三相配电线两相，其中所有电极的所有相均安装有雷电损坏保护方法。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007159318A Ground direction detector 有权
标题翻译：地线方向探测器
公开(公告)号：JP2007159318A
公开(公告)日：2007-06-21
申请号：JP2005353788
申请日：2005-12-07
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： NAKADA KAZUO , HOTTA TAKESHI
IPC分类号： H02H7/26 , G01R31/08 , H02H3/38
摘要： PROBLEM TO BE SOLVED: To provide a correct and simple ground direction detector without using a zero-phase voltage measuring device.
SOLUTION: In the ground direction detector; a detection unit 1 set to a power distribution facility is equipped with a zero-phase current detection means 4, a power source voltage detection means 5, and a ground judging means 6 which synchronously stores the zero-phase current and the power source voltage when ground fault is judged. Further, a judging section 2 which judges the ground direction based on the information obtained by the detection unit 1 is equipped with a communication means 3 for receiving ground generation phase data indicating the phase, wherein the ground detected by a transformer station is generated; a ground judging means 6 is equipped with a ground direction judging means 7 which directs the direction of a ground point from the phase difference between the reserved zero-phase current and the power source voltage and the ground generation phase data; and the ground direction judging means 7 is equipped with a phase calculation module 8 and a judging module 9.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在不使用零相电压测量装置的情况下提供正确简单的地面方向检测器。解决方案：在地面方向检测器; 设置在配电设备上的检测单元1配备有零相电流检测装置4，电源电压检测装置5和接地判断装置6，其同时存储零相电流和电源电压判断接地故障。此外，基于由检测单元1获得的信息来判断地面方向的判断部分2装备有用于接收指示相位的地面产生相位数据的通信装置3，其中产生由变电站检测到的地面; 地面判断装置6配备有地面方向判定装置7，其从保留的零相电流和电源电压之间的相位差和地面产生相位数据引导接地点的方向; 并且地面方向判断装置7配备有相位计算模块8和判断模块9.版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2005322603A Protective circuit for power system 有权
标题翻译：电力系统保护电路
公开(公告)号：JP2005322603A
公开(公告)日：2005-11-17
申请号：JP2004141538
申请日：2004-05-11
申请人： Energy Support Corp , Hokuriku Electric Power Co Inc:The , Hokuriku Energys Kk , エナジーサポート株式会社 , 北陸エナジス株式会社 , 北陸電力株式会社
发明人： NAKADA KAZUO , TANAHASHI YASUHIRO , KOZUKA YUSEI
IPC分类号： H01H85/042
摘要： PROBLEM TO BE SOLVED: To provide a protective circuit for a power system with equipment cost saved as much as possible, and with trouble areas localized through restraint of the repercussion of short-circuit failure and grounding failures of equipment which are connected in branched manner to a power system.
SOLUTION: A serial circuit of a cutout 13 with a tripolar interlocking release function with an expulsion fuse 13a incorporated in free detachment, and a cylindrical cutout 14 with a current-limiting fuse 14a having an interruption function incorporated in free detachment is arranged the power source side of a reactor 12 branch connected to a distribution wire 11. Further, the rated current of the expulsion fuse 13a is set smaller than that of the current-limiting fuse 14a. By the protection coordination of the current-limiting fuse 14a and the expulsion fuse 13a, a given interruption capacity can be secured, to enable protection of the power system from the short-circuiting failures with respect to the reactor 12.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电力系统的保护电路，尽可能节省设备成本，并通过限制连接在设备中的短路故障和接地故障的限制来区分故障区域分支到电力系统。解决方案：具有结合在自由分离中的具有三极互锁释放功能的切口13的串联电路和具有以自由分离结合的具有中断功能的限流熔断器14a的圆柱形切口14布置成反应器12的电源侧分支连接到配电线11.此外，排出保险丝13a的额定电流被设定为小于限流熔断器14a的额定电流。通过限流熔断器14a和排出熔断器13a的保护协调，可以确保给定的中断能力，以使电力系统免受相对于电抗器12的短路故障的保护。版权所有：（C）2006，JPO＆NCIPI

10. 发明专利

JP2006109567A Ground fault current suppressing apparatus of power distribution system 审中-公开
标题翻译：电力分配系统的地面故障电流抑制装置
公开(公告)号：JP2006109567A
公开(公告)日：2006-04-20
申请号：JP2004290255
申请日：2004-10-01
申请人： Fuji Electric Systems Co Ltd , Hokuriku Electric Power Co Inc:The , 北陸電力株式会社 , 富士電機システムズ株式会社
发明人： NAKADA KAZUO , OBA TATSUYA , MATSUMOTO TOSHIRO
IPC分类号： H02H9/08 , H02J3/26
CPC分类号： Y02E40/50
摘要： PROBLEM TO BE SOLVED: To make a ground fault current suppressing apparatus detect a ground fault and protect a power distribution system in the ground fault current suppressing apparatus of the power distribution system using an active compensating apparatus even if a ground fault current is suppressed. SOLUTION: The power distribution system is provided with a protection relay, a ground fault current detecting means, a compensation current generating means for generating a compensation current having a reverse phase to the ground fault current detected by the detecting means, a ground fault current suppressing means for injecting the compensation current generated by the compensation current generating means into the power distribution system and suppressing the ground fault current, and a means for controlling the magnitude of the compensation current generated by the compensation current generator so as not to suppress the ground fault current suppressed in the power distribution system below an operation settling current of the protection relay. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：为了使接地故障电流抑制装置使用有源补偿装置检测接地故障并保护配电系统的接地故障电流抑制装置中的配电系统，即使接地故障电流为抑制。解决方案：配电系统设有保护继电器，接地故障电流检测装置，补偿电流产生装置，用于产生与由检测装置检测的接地故障电流具有相反相位的补偿电流;接地用于将由补偿电流产生装置产生的补偿电流注入配电系统并抑制接地故障电流的故障电流抑制装置，以及用于控制由补偿电流发生器产生的补偿电流的大小以便不抑制的装置配电系统中的接地故障电流低于保护继电器的运行稳定电流。版权所有（C）2006，JPO＆NCIPI

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