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1. 发明专利

JP2013156103A Distribution line monitoring control system and distribution line monitoring control method 有权
标题翻译：分布线监测控制系统和分布线监测控制方法
公开(公告)号：JP2013156103A
公开(公告)日：2013-08-15
申请号：JP2012016040
申请日：2012-01-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAGAWA TAKAHIRO , SHIMAMURA HIDEHIKO
IPC分类号： G01R31/08 , G01R31/02 , H02H3/00 , H02H7/26 , H02J13/00
CPC分类号： Y02E60/725 , Y04S10/20 , Y04S10/522
摘要： PROBLEM TO BE SOLVED: To provide a distribution line monitoring control system and a distribution line monitoring control method capable of separating more users as possible from an accident section when an accident such as disconnection occurs in a power distribution system by quickly detecting an accident occurrence place by a simple configuration and separating the accident occurrence place from a sound power distribution system.SOLUTION: A plurality of distribution lines are connected to a distribution bus; disconnection detection devices arranged in respective connecting distribution lines for connecting between respective distribution lines are polled; when disconnection in any one of distribution lines is detected, a control command is outputted to a connecting switch included in the connecting distribution line so as to supply power to at least one of disconnection detection devices arranged in a plurality of places of the distribution line; and the disconnection detection devices arranged in the plurality of places of the distribution line whose disconnection is detected are successively state-monitored to determine a disconnection place.
摘要翻译：要解决的问题：提供一种配电线路监视控制系统和分配线路监视控制方法，其能够通过快速检测事故发生地点在配电系统中发生诸如断线等事故时，将更多的用户与事故部分分离通过简单的配置将事故发生地点与声音配电系统分开。解决方案：多条配电线路连接到配电总线; 布置在用于连接各个配线之间的连接配线中的断路检测装置被轮询; 当检测到任何一个配线中的断开时，向包括在连接配线中的连接开关输出控制命令，以向配置在配电线路的多个位置的断路检测装置中的至少一个供电; 并且配置在检测到断线的配线的多个位置的断线检测装置被连续状态监视，以确定断开位置。

2. 发明专利

JP2007209151A Loop operational system in electrical distribution system and method 审中-公开
标题翻译：电力分配系统和方法中的环路操作系统
公开(公告)号：JP2007209151A
公开(公告)日：2007-08-16
申请号：JP2006026794
申请日：2006-02-03
申请人： Hitachi Ltd , Tohoku Electric Power Co Inc , 東北電力株式会社 , 株式会社日立製作所
发明人： OGAWA KENJI , WATANABE MASAHIRO , SHIMAMURA HIDEHIKO , KAWASE MINORU , HONGO YASUJI , WADA MASARU
IPC分类号： H02H7/26 , H02J3/04
摘要： PROBLEM TO BE SOLVED: To provide a loop operational system in an electrical distribution system which attains reduction in power loss and maintenance of reliability on supply, and exhibits excellent facility investment effect. SOLUTION: Both electrical distribution lines 31, 32 are connected to the loop point (a setting point of a linkage switch) in the electrical distribution system which is configured as a tree and operated via a protection device 7 comprising a sensor 71 for detecting the zero-phase voltage, a phase current and a zero-phase current of the distribution lines, a fault detection device 72 for detecting grounding, short-circuiting and disconnection in the distribution line and a circuit breaker 73 to constitute the loop operational system in the electrical distribution system. When the loop operational system is normal, the circuit breaker 73 is closed and the system is operated in a loop state, to detect the faults such as grounding, short-circuiting, disconnection or the like faster (high speed) than an existing distribution line protection facility, to release the circuit breaker 73, and to switch to a tree-like operation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种配电系统中的回路运行系统，其能够降低功率损耗和维护供应可靠性，并且具有出色的设备投资效果。
解决方案：两个配电线路31,32连接到配电系统中的环路点（连动开关的设定点），该配电系统被配置为树并通过保护装置7操作，该保护装置包括传感器71，用于检测配电线路的零相电压，相电流和零相电流，用于检测配电线路中的接地，短路和断线的故障检测装置72以及构成回路操作系统的断路器73 在配电系统中。当环路操作系统正常时，断路器73闭合，系统工作在环路状态，以比现有配电线路更快（高速）地检测接地，短路，断线等故障保护装置，以释放断路器73，并切换到树状操作。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2004053554A Distribution line disconnection detection system 审中-公开
标题翻译：分配线断路检测系统
公开(公告)号：JP2004053554A
公开(公告)日：2004-02-19
申请号：JP2002214942
申请日：2002-07-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIJIMA KAZUO , SHIMAMURA HIDEHIKO , OGAWA KENJI
IPC分类号： G01R31/02 , G01R31/08 , H02H3/00 , H02H7/26
摘要： PROBLEM TO BE SOLVED: To provide a distribution line disconnection detection system capable of quickly detecting an accident occurrence spot, when a disconnection accident in a wide-area distribution system occurs. SOLUTION: Disconnection detection devices FD100-FD(n-1)00 juxtaposed with linkage section switches DM100-DM(-1)n00 are polled by a first polling means 14, and resultantly a distribution line where a disconnection occurs is specified by a distribution line specification means 15. Then, a plurality of disconnection detection devices FD20-FD23 arranged on the distribution line 2 specified by the distribution line specification means 15 are polled by a second polling means 16, and resultantly the position where the disconnection occurs is specified by a disconnection position specification means 17. COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供一种能够快速检测事故发生点的分配线断线检测系统，当广域分配系统发生断开事故时。解决方案：通过第一轮询装置14轮询与联动部分交换机DM100-DM（-1）n00并置的断开检测装置FD100-FD（n-1）00，并且指定发生断开的分配线然后，通过第二轮询装置16轮询布置在由分配线指定装置15指定的分配线2上的多个断开检测装置FD20-FD23，从而导致断开发生的位置由断开位置指定装置17指定。版权所有（C）2004，JPO

4. 发明专利

JP2005300205A Method and device for locating ground fault point 有权
标题翻译：用于定位地面故障点的方法和装置
公开(公告)号：JP2005300205A
公开(公告)日：2005-10-27
申请号：JP2004113040
申请日：2004-04-07
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： TATEMI MASARU , KATO TATSURO , ONO YASUNORI , SHIMAMURA HIDEHIKO , ENDO YOSHITO , WADA YUICHI , KASASHIMA TAKASHI
IPC分类号： G01R31/08 , H02H3/00 , H02H3/34
摘要： PROBLEM TO BE SOLVED: To locate a ground fault point from the waveform of a zero-phase current in ground fault and to use an A/D converter of low sampling frequency. SOLUTION: A monitoring system 1 is equipped with a relational expression between the position of a ground fault point and a resonance frequency of a zero-phase waveform, previously calculated by simulation of a system model. Ground fault detectors 2 each comprise a sensor part 2-1 for current and voltage, an accident detection part 2-2 equipped with an A/D converter and a failure determination part, and a memory 2-3 for recording a zero-phase current. The detectors 2 are disposed on respective distribution lines to determine a ground fault zone from ground fault data acquired from the fault detectors 2. Further, the ground fault point is located by applying the waveform of the zero-phase current in the memory 2-3 to the relational expression. An inexpensive system can be structured since an A/D converter of low sampling frequency can be used. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：从接地故障中的零相电流的波形中定位接地故障点，并使用低采样频率的A / D转换器。
解决方案：监控系统1配备有先前通过仿真系统模型计算的接地故障点的位置和零相位波形的谐振频率之间的关系表达式。接地故障检测器2各自包括用于电流和电压的传感器部分2-1，配备有A / D转换器和故障确定部件的事故检测部件2-2以及用于记录零相电流的存储器2-3 。检测器2设置在相应的分配线上，以从故障检测器2获取的接地故障数据确定接地故障区。此外，通过将零相电流的波形施加到存储器2-3中来定位接地故障点关系表达。可以使用廉价的系统，因为可以使用低采样频率的A / D转换器。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2003319549A Distribution line accident section locator 有权
标题翻译：分配线事故部分定位器
公开(公告)号：JP2003319549A
公开(公告)日：2003-11-07
申请号：JP2002116932
申请日：2002-04-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMAMURA HIDEHIKO , NAMIKATA KIYONORI
IPC分类号： G01R31/08 , H02H3/38 , H02H7/26
CPC分类号： Y04S10/522
摘要： PROBLEM TO BE SOLVED: To provide a distribution line accident section locator capable of detecting an accurate accident position and the direction without affected by a grid condition or a transient response due to the accident pattern.
SOLUTION: Accident detectors distributed along the distribution line are inputted with a zero-phase voltage and a zero-phase current at an arrangement point from a zero-phase voltage sensor and a zero-phase current sensor. By judging the sign of an electric quantity (power product) of two vector products for a prescribed period, before and after occurrence of earth fault, the earth fault direction is accurately determined without affected by a grid condition, an accident pattern, etc. Thus, an accident direction is accurately detected without affected by the grid condition or a transient response due to an accident pattern.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种能够检测准确的事故位置和方向的分配线事故部分定位器，而不受电网状况或由于事故模式的瞬态响应的影响。
解决方案：沿着配电线路分布的事故检测器在零相电压传感器和零相电流传感器的配置点输入零相电压和零相电流。通过判断两个矢量产品的电量（功率乘积）在规定的时间段内，发生接地故障前后的接地故障方向是否准确确定，不受电网状况，事故模式等的影响。，不会受到电网状况或事故模式的瞬态响应的影响而准确地检测出事故方向。版权所有（C）2004，JPO

6. 发明专利

JP2010068604A Unit, method and program for estimating state of distribution system 有权
标题翻译：用于评估分配系统状态的单元，方法和程序
公开(公告)号：JP2010068604A
公开(公告)日：2010-03-25
申请号：JP2008231525
申请日：2008-09-09
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： OGAWA KENJI , WATANABE MASAHIRO , SHIMAMURA HIDEHIKO , MITSUYAMA TERUKI , HIRAIWA NAOYA , KAJIYAMA SATOSHI
IPC分类号： H02J3/00 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To reduce the impact of instrumentation error in a measuring instrument, and to estimate the state matching the instrumentation data when the state of a distribution system is estimated utilizing the instrumentation data of electrical quantity of a system obtained by the measuring instrument. SOLUTION: A unit 1 for estimating the state of a distribution system includes a target value/measurement error range calculation section 13 which calculates the target value of electrical quantity of a system when the state of a system is estimated and calculates the instrumentation error range of power in the instrumentation of electrical quantity of a system, a model creation section 14 which forms a section model of a distribution system, a load calculation section 15 which calculates each load in the section model so that the calculation value of voltage at the receiving end matches the target value while adjusting the load within the instrumentation error range, a voltage calculation section 16 which calculates the voltage distribution of the distribution system based on the equipment information and each load calculated at the load calculation section, and a target value correction section 17 which corrects the target value so that the difference of a voltage calculation value calculated at the voltage calculation section and the voltage measurement value is minimized. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了减少测量仪器中仪器误差的影响，并且当使用由系统获得的系统的电量的仪器数据来估计配电系统的状态时，估计与仪表数据匹配的状态测量仪器。解决方案：用于估计分配系统的状态的单元1包括目标值/测量误差范围计算部13，其在估计系统的状态时计算系统的电量的目标值，并计算仪器系统电量仪表中的功率误差范围，形成分配系统的分段模型的模型创建部分14，计算分段模型中的每个负载的负荷计算部分15，使得电压的计算值接收端在调整仪表误差范围内的负载的同时匹配目标值;电压计算部分16，其基于设备信息和在负载计算部分计算的每个负载来计算分配系统的电压分布;以及目标值校正部分17，其校正目标值，使得电压计算值的差值在电压计算部分计算，电压测量值被最小化。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2009124913A Voltage imbalance elimination supporting device, supporting method, and program thereof 有权
标题翻译：电压不平衡消除支持设备，支持方法及其程序
公开(公告)号：JP2009124913A
公开(公告)日：2009-06-04
申请号：JP2007298800
申请日：2007-11-19
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： OGAWA KENJI , WATANABE MASAHIRO , SHIMAMURA HIDEHIKO , MITSUYAMA TERUKI , SUGANO NORIHIRO , HIRAIWA NAOYA , KAJIYAMA SATOSHI , WADA TAKENAO , KIMURA TAKAYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide an imbalance elimination supporting device which calculates an amount of load transfer which can reduce voltage imbalance in multiple time slots with different conditions of voltage imbalance. SOLUTION: The imbalance elimination supporting device is equipped with: a measurement information database 11 for storing measurement information relating to a power distribution system in multiple time slots; facility information database 12 for storing the system configuration and line impedance of the power distribution system; a load information database 13 for storing the rated capacity and the demand rate in multiple time slots of the power distribution system; a section 14 for calculating upper and lower limit values, which calculates the upper and lower limit values of a change in voltage between lines and the upper and lower limit values of an amount of load transfer, from an acceptable value for imbalance rate and the information output from each database; and a section 15 for calculating an amount of load transfer, which determines, by optimization calculation, an amount of load transfer for eliminating voltage imbalance in multiple time slots of the power distribution system using an object function for minimizing voltage imbalance based on the upper and lower limit values of a change in voltage between lines and the upper and lower limit values of an amount of load transfer which were calculated by the section for calculating upper and lower limit values. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种不平衡消除支持装置，其计算可以在不同的电压不平衡条件下减少多个时隙中的电压不平衡的负载传输量。解决方案：不平衡消除支持装置配备有：用于存储与多个时隙中的配电系统相关的测量信息的测量信息数据库11; 设备信息数据库12，用于存储配电系统的系统配置和线路阻抗; 用于在配电系统的多个时隙中存储额定容量和需求速率的负载信息数据库13; 用于计算上限值和下限值的部分14，其从不平衡率的可接受值和信息中计算线路之间的电压变化的上限值和下限值以及负载转移量的上限值和下限值每个数据库的输出; 以及用于计算负载传递量的部分15，其通过优化计算确定用于消除基于上部和下部的电压不平衡的目标函数的配电系统的多个时隙中的电压不平衡的负载传递量，以及线路之间的电压变化的下限值和由用于计算上限值和下限值的部分计算的负载转移量的上限值和下限值。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2005304114A Tree contact monitor of distribution line 有权
标题翻译：树木联络监督线
公开(公告)号：JP2005304114A
公开(公告)日：2005-10-27
申请号：JP2004113029
申请日：2004-04-07
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： KATO TATSURO , TATEMI MASARU , ONO YASUNORI , SHIMAMURA HIDEHIKO , ENDO YOSHITO , WADA YUICHI , KASASHIMA TAKASHI
IPC分类号： G01R31/02 , G01R25/00 , H02H3/34 , H02H3/347 , H02H7/26
摘要： PROBLEM TO BE SOLVED: To solve a problem that since the tree contact of a distribution line is high in resistance at a stage before leading to a ground fault and a leak current signal is weak, it is difficult to detect and determine a tree contact signal while discriminating it from a residual zero-phase current Io or a residual zero-phase voltage Vo existing in a distribution system.
SOLUTION: The zero-phase voltage Vo, the zero-phase current Io, and the phase difference between the zero-phase voltage and the zero-phase current are acquired at a set period and variation in time series data is monitored. Since these data change on the order of several minutes to several tens minutes, tree contact can be detected by monitoring time variations in magnitudes of zero-phase voltage Vo and zero-phase current Io and a variation in the phase difference between the zero-phase voltage Vo and the zero-phase current Io.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题为了解决由于分配线的树状接触在导致接地故障之前的阶段的电阻高且泄漏电流信号较弱的问题，难以检测和确定树状接触信号，同时与剩余零相电流Io或分配系统中存在的残余零相电压Vo区分开。
解决方案：在设定的周期内获取零相电压Vo，零相电流Io以及零相电压和零相电流之间的相位差，并监视时间序列数据的变化。由于这些数据在数分钟到数十分钟之间变化，可以通过监视零相电压Vo和零相电流Io的时间变化以及零相位相位差的变化来检测树状接触电压Vo和零相电流Io。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005341668A Voltage regulator and voltage regulating method 有权
标题翻译：电压调节器和电压调节方法
公开(公告)号：JP2005341668A
公开(公告)日：2005-12-08
申请号：JP2004154479
申请日：2004-05-25
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： OGAWA KENJI , WATANABE MASAHIRO , SHIMAMURA HIDEHIKO , KAWASE MINORU , NAKAMURA TOMOHARU , YOSHINAGA ATSUSHI , TAKI YOSHIHARU
IPC分类号： H02J3/12 , H02J3/18 , H02M7/493 , H02M7/48
CPC分类号： Y02E40/30
摘要： PROBLEM TO BE SOLVED: To regulate the voltage of a low-voltage distribution system by making a pole transformer have a voltage regulating function. SOLUTION: In a power system which is composed of a pole transformer 110 for connecting a high-voltage distribution line 10 with a low-voltage distribution line 20 and consumer load 22 or a dispersed power source 23 connected to the low-voltage distribution line, this voltage regulator is equipped with: the above pole transformer 110; series transformers 211 and 212 whose primary sides are connected to its secondary side; an regulation voltage control circuit 240 which receives the input of the voltage measured value of a low-voltage distribution line 20; and a regulation voltage generating circuit 230 which generates voltage on the secondary sides of the series transformers 211 and 212, based on the output of the regulation voltage control circuit 240. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过使极点变压器具有电压调节功能来调节低压配电系统的电压。解决方案：在由用于将高压配电线路10与低压配电线路20连接的极点变压器110和与低压配电线路20连接的消费者负载22或分散电源23构成的电力系统中配电线路，该电压调节器配有：上述变压器110; 串联变压器211和212，其一次侧连接到其次级侧; 接收低电压配线20的电压测量值的输入的调节电压控制电路240; 以及调节电压发生电路230，其基于调节电压控制电路240的输出，在串联变压器211和212的次级侧产生电压。（C）2006年，JPO和NCIPI

10. 发明专利

JP2005300207A Method of locating short-circuit point on power distribution line 有权
标题翻译：在电力分配线上定位短路点的方法
公开(公告)号：JP2005300207A
公开(公告)日：2005-10-27
申请号：JP2004113050
申请日：2004-04-07
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： KATO TATSURO , TATEMI MASARU , ONO YASUNORI , SHIMAMURA HIDEHIKO , ENDO YOSHITO , WADA YUICHI , KASASHIMA TAKASHI
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To quickly cope with the short-circuit by specifying not only the interval of the short-circuit but also specifying the short-circuit point and to shorten the recovery hours after an accident happened.
SOLUTION: The short-circuit position is located from the line distance and the impedance Zo utilizing the potential difference of voltage to the earth between two measuring points positioning nearer to the electric power source than the short-circuit point. Furthermore, by considering for improving measuring precision, the voltage to the earth detected on the load side of the short-circuit point, the short-circuit position is calculated independently of the short-circuit resistance being an error factor. The method can specify not only the interval of the short-circuit but also specify the short circuit point, therefore quick response can be expected, so recovery hours after the accident can be shortened.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过指定短路的间隔，同时指定短路点，缩短事故发生后的恢复时间，快速应对短路。
解决方案：短路位置位于距离短路点更靠近电源的两个测量点之间，距离线距离和阻抗Zo利用电压对地的电位差。此外，通过考虑提高测量精度，在短路点的负载侧检测到的地电压，短路位置被独立于短路电阻计算为误差因子来计算。该方法不仅可以指定短路的间隔，还可以指定短路点，因此可以预期快速响应，因此可以缩短事故发生后的恢复时间。版权所有（C）2006，JPO＆NCIPI

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