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1. 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

2. 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

3. 发明专利

JP2009050064A Distribution system status estimating device 审中-公开
标题翻译：分布式系统状态估计装置
公开(公告)号：JP2009050064A
公开(公告)日：2009-03-05
申请号：JP2007212529
申请日：2007-08-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA YASUSHI , WATANABE MASAHIRO , FURUKAWA TOSHIYUKI , OGAWA KENJI , MATSUZAKI TAKAO , GOTODA NOBUHIRO
IPC分类号： H02J13/00 , G06Q50/00 , G06Q50/06 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a means for accurately estimating the actual amount of load in a section in which customers equipped with photovoltaic power generation devices by measuring the electricity generated by only some of the photovoltaic power generation devices, not by all the photovoltaic power generation devices. SOLUTION: A distribution system status estimating device includes: a data collecting means for collecting the electric energy of each customer and the electricity generated by the photovoltaic power generation device thereof; electricity generated correlation model data that provides the relation of the electricity generated by each photovoltaic power generation device; and an amount of electricity photovoltaically generated estimating means for estimating the amounts of electricity generated by the other photovoltaic power generation devices using the above electricity generated correlation model data and the electricity generated by the photovoltaic power generation device. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于通过仅测量一些光伏发电装置产生的电力而不是全部来准确地估计装备有光伏发电装置的客户的部分中的实际负载量的装置光伏发电装置。解决方案：分配系统状态估计装置包括：数据收集装置，用于收集每个客户的电能和由其光伏发电装置产生的电力; 电力产生相关模型数据，提供由每个光伏发电装置产生的电力的关系; 以及一定量的电光产生估计装置，用于使用上述发电相关模型数据和由光伏发电装置产生的电力来估计由其他光伏发电装置产生的电量。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2006087177A State estimating device, method, and program for distribution system 有权
标题翻译：状态估计装置，分配系统的方法和程序
公开(公告)号：JP2006087177A
公开(公告)日：2006-03-30
申请号：JP2004267685
申请日：2004-09-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE MASAHIRO , KIMURA YASUTAKA , OGAWA KENJI , KOMURA AKIYOSHI , UCHIYAMA TOMOYUKI
IPC分类号： H02J3/00 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To provide a state estimating device, a method, and a program for accurately estimating the power flow state of a distribution system from limited voltage/current observed values of the distribution system. SOLUTION: This distriubtion system state estimating device which estimates the state of the power flow of a distribution system is equipped with a distribution system state estimating part which computes the estimate of the state of the power distribution system based on a measurement database which stores measurements of the power distribution system, a facility database which stores upper and lower limit values of the load connected to the power distribution system, upper and lower limit values of the amount of power generation, and daily patterns or upper and lower limit values of the amount of line impedance modification, and the measurements of the power distirbution system read out of the measurement database and upper and lower limit values of a load connected to the power distribution system or the amount of power generation and the daily patterns or the upper and lower limit values of the amount of line impedance modification read out of the facility database, and a display part which indicates the estimate of the state of the power distribution system that the power distribution system state estimating part has computed. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种状态估计装置，方法和程序，用于从分配系统的有限电压/电流观测值精确地估计分配系统的功率流动状态。解决方案：该分散系统状态估计装置，其估计分配系统的功率流的状态，配备有分配系统状态估计部，其基于测量数据库计算配电系统的状态的估计，存储配电系统的测量，存储连接到配电系统的负载的上限值和下限值的设施数据库，发电量的上限值和下限值，以及每日模式或上下限值线路阻抗修改量，以及从测量数据库中读出的功率分布系统的测量值以及连接到配电系统的负载的上限和下限值，或发电量和日常模式，从设施数据库读出的线路阻抗修改量的下限值和显示器表示配电系统状态估计部计算出的配电系统的状态的估计的部分。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005341666A Device for preventing single-operation 有权
标题翻译：防止单一操作的装置
公开(公告)号：JP2005341666A
公开(公告)日：2005-12-08
申请号：JP2004154476
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： KIMURA YASUTAKA , OGAWA KENJI , SHIMAMURA HIDEHIKO , KAWASE MINORU , YOSHINAGA ATSUSHI , TAKI YOSHIHARU
IPC分类号： H02J3/38
摘要： PROBLEM TO BE SOLVED: To prevent single operation by surely stopping a dispersed power source where two or more units are interconnected to a low-voltage system at the accident of a high-voltage distribution system. SOLUTION: At the time of an accident of a high-voltage distribution line 140, this single operation preventing device stops the dispersed power source without fail, by opening a switch 20 by means of a switch controller 32 and closing a switch 51 so that it is not single operation, thereby making the demand and supply imbalanced. For this reason, this is equipped with a voltage computer 31, which calculates the effective values of the zero-phase voltage and the line voltage of a high-voltage system, an accident-detecting arithmetic unit 41 which detects grounding or a short-circuit accident in an accident; a switch controller 32 which controls the switch 20 in a low-voltage distribution line 150 and the switch 51 in a resisting short-circuit 50; and the resisting short-circuit 50, which short-circuits the two phases of the low-voltage distribution line 150. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止在高压配电系统发生事故时将两个或多个单元互连到低压系统的分散电源的可靠停止的单次操作。解决方案：在高压配电线路140发生事故时，该单个操作防止装置通过利用开关控制器32打开开关20并闭合开关51来停止分散的电源。使其不单一运作，从而使供需不平衡。因此，配备有电压计算机31，其计算高压系统的零相电压和线电压的有效值，检测接地或短路的事故检测运算单元41 发生意外事故开关控制器32，其在低压配线150中控制开关20，开关51在耐电短路50中控制; 和抗电路短路50，这使低压配电线路150的两相短路。（C）2006年，JPO＆NCIPI

6. 发明专利

JP2009005439A Electric system supply and demand control system, commanding unit, and electric system supply and demand control method 有权
标题翻译：电力系统供应和需求控制系统，指令单元和电力系统供应和需求控制方法
公开(公告)号：JP2009005439A
公开(公告)日：2009-01-08
申请号：JP2007161852
申请日：2007-06-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIMURA YASUTAKA , WATANABE MASAHIRO , OGAWA KENJI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To stabilize a frequency of a system to which a generator is connected. SOLUTION: This system is equipped with a system 1 small in frequency fluctuation band to which the generator 11 and a high-quality load 12 are connected, and a system large in frequency fluctuation band to which a distributed power source 22 and a standard-quality load 23 are connected. The system has a switch 31 which is connected between the system 1 small in frequency fluctuation band and the system 2 large in frequency fluctuation band, an adjusting load 32 which is connected via the switch 31 and consumes the power of each system 1 and 2, and an adjusting load changeover commanding unit 33 which controls the switch 31 based on the frequency of the system 1 small in frequency fluctuation band. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了稳定发电机连接到的系统的频率。解决方案：该系统配备有发电机11和高品质负载12连接的频率波动频带小的系统1以及频率波动带大的系统，分布式电源22和标准质量负载23连接。该系统具有连接在频率波动频带小的系统1和频率波动频带大的系统2之间的开关31，经由开关31连接并消耗各系统1和2的电力的调整负载32，以及基于频率波动带小的系统1的频率来控制开关31的调整负载切换指令单元33。版权所有（C）2009，JPO＆INPIT

7. 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

8. 发明专利

JP2004088824A Coordination controller of power equipment 有权
标题翻译：电力设备协调控制器
公开(公告)号：JP2004088824A
公开(公告)日：2004-03-18
申请号：JP2002242815
申请日：2002-08-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATO YASUO , WATANABE MASAHIRO , OGAWA KENJI
IPC分类号： H02J3/12 , H02J3/00 , H02J3/18 , H02J3/38 , H02J13/00
CPC分类号： H02J3/38 , G06Q50/06 , H02J3/008 , H02J13/0013 , Y02E40/72 , Y02E60/7807 , Y04S10/12 , Y04S40/12 , Y04S50/10 , Y10T307/25
摘要： PROBLEM TO BE SOLVED: To prevent degradation of power quality such as voltage value of a power grid when all distributed power supplies, where the power grid is permitted for linkage, operate freely.
SOLUTION: A distributed power supply 103 comprises a communication means 112 to the outside of power equipment, a time keeping means 116 to get a current time, a time synchronization means 115 to synchronize with an external time, and a communication means 112 which receives a control schedule of a power consumption unit or a power generating unit. A coordination controller 101 executes the control schedule according to the time acquired by the time keeping means 116. Thanks to the controller, degradation of power quality such as voltage drop of the power grit caused by operation of the distributed power supply is avoided.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了防止在允许电网连接的所有分布式电源自由运行的电网电压值等电力质量的劣化。解决方案：分布式电源103包括到电力设备外部的通信装置112，获取当前时间的时间保持装置116，与外部时间同步的时间同步装置115以及通信装置112 其接收功耗单元或发电单元的控制进度。协调控制器101根据由时间保持装置116获取的时间来执行控制调度。由于控制器，避免了由分布式电源的操作引起的功率电压下降等电力质量的劣化。版权所有（C）2004，JPO

9. 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

10. 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

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