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1. 发明专利

JP2010220379A Device and method for estimating distributed power supply output in power distribution system 有权
标题翻译：在配电系统中估计分布式电源输出的装置和方法
公开(公告)号：JP2010220379A
公开(公告)日：2010-09-30
申请号：JP2009063912
申请日：2009-03-17
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： YAMAZAKI MAKOTO , INOUE HIROSHI , WADA MASARU , MATSUDA KATSUHIRO
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To precisely estimate an output transition value of a distributed power supply 190 covering 24 hours a day from the measured data of a sensor 150, obtained by adding a distributed power supply output value and a load 180 measured at a consumer's outlet 130 linked to the distributed power supply 190, thereby preventing a power distribution line overload due to dropping of a distributed power supply at recovery from an accident and system changeover to cause no voltage reduction in a power distribution system. SOLUTION: Profiling model data showing an output transition at each 30 minutes of the distributed power supply 190 is read from a database 21 to correct the time of the model data using the transition of the current of a sensor 150. Then, absolute quantity correction is carried out based on the rated capacity of the distributed power supply 190 read from a facility database 23. When a plurality of distributed power supplies 190 are available within a consumer's premise 160, output transfer data at each 30 minutes of 24 hours a day in a distributed power supply of the consumer 160 is estimated based on the total of the plurality of distributed power supplies for transfer data display on a display 11. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过将分布式电源输出值和在连接到分布式电源190的消费者出口130，从而防止由于在事故和系统切换恢复时分散电源的掉落而导致的配电线路过载，从而不会在配电系统中降低电压。解决方案：从数据库21读取表示分布式电源190每30分钟输出转换的分析模型数据，以使用传感器150的电流转换来校正模型数据的时间。然后，绝对值基于从设施数据库23读取的分布式电源190的额定容量进行数量校正。当多个分布式电源190在消费者的场所160内可用时，在24小时的每30分钟a的输出传送数据基于用于显示器11上的传送数据显示的多个分布式电源的总和来估计消费者160的分布式电源中的一天。（C）2010年，JPO和INPIT

2. 发明专利

JP2007295738A Power equipment arithmetic unit, power generation system, and power equipment operation program 有权
标题翻译：电力设备算术单元，发电系统和电力设备操作程序
公开(公告)号：JP2007295738A
公开(公告)日：2007-11-08
申请号：JP2006121763
申请日：2006-04-26
申请人： Hitachi Ltd , Tohoku Electric Mfg Co Ltd , Tohoku Electric Power Co Inc , 東北電力株式会社 , 東北電機製造株式会社 , 株式会社日立製作所
发明人： FURUKAWA TOSHIYUKI , HIRAI YOSHIHIRO , TSUBOE YASUHIRO , MATSUDA KATSUHIRO , WADA MASARU
IPC分类号： H02J3/12 , H02J3/00 , H02J3/38
摘要： PROBLEM TO BE SOLVED: To select the maximum output voltage of a power converter so that a plurality of node voltages of distribution systems may be within specified ranges. SOLUTION: It is equipped with a file means which stores the system data on distribution systems 2020, 2022, 2024, 2026, 2040, 2030, 2032, 2034, and 2036, the voltage data on a transformer 2020 which supplies these distribution system with voltage, the load data on the loads connected to the above distribution systems, and the equipment data on the decentralized generation equipment which consists of a plurality of generation equipment 2400 connected to the above distribution systems via a power converter 2300; a power flow computing means which computes the node voltage of the above distribution systems, using the above several data; and a maximum output voltage selecting means which selects the maximum output voltage of the above power converter, so that the above computed node voltage may be within a specified range. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：选择功率转换器的最大输出电压，使得配电系统的多个节点电压可以在规定范围内。解决方案：它配备有将系统数据存储在分配系统2020,2022,2024,2026,2040,2030,2032,2034和2036上的文件装置，变压器2020上提供这些分配的电压数据具有电压的系统，连接到上述分配系统的负载上的负载数据，以及由经由功率转换器2300连接到上述分配系统的多个发电设备2400组成的分散式发电设备上的设备数据; 使用上述几种数据计算上述分配系统的节点电压的功率流计算装置; 以及最大输出电压选择装置，其选择上述功率转换器的最大输出电压，使得上述计算出的节点电压可以在规定范围内。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2004254369A Power line short circuit protection relay system 有权
公开(公告)号：JP2004254369A
公开(公告)日：2004-09-09
申请号：JP2003039812
申请日：2003-02-18
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： NISHIJIMA KAZUO , SHIMAMURA HIDEHIKO , NAGAOKA KAZUTOSHI , WADA MASARU
IPC分类号： H02H7/26
摘要： PROBLEM TO BE SOLVED: To eliminate complications in consideration and reviewing affairs of a power line short circuit protection relay system, including an operation control, that follows the modification of an operation mode of a power distribution grid, and to provide a power line short circuit protection relay system which is optimum for the power distribution grid.
SOLUTION: Overcurrent detecting elements OCR, HOC and OCF output a cut-off signal (FCB trip signal) for isolating the shorted power line based on a power line current from the power line grid to each power line tap breaker CB, when short circuit occurs in the power line grid in which either a tree-like operation that distributes power to customers through a tree-like power distribution line that branches by a plurality of numbers from a power line bus bar, or a loop operation where the tree-like power distribution lines are combined is selected. This short circuit protection relay system comprises an overcurrent-detecting element OCR1 having anti time limit characteristics in the tree-like operation of a power line, an overcurrent-detecting element OCR2 having strong anti time limit characteristics in the loop operation of the power line, and loop operation information capturing means A to D for selectively switching outputs of the overcurrent-detecting elements OCR1 and OCR2 according to the state of the loop operation.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 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

5. 发明专利

JP2005057821A Equipment and method for assisting analysis of distribution system 有权
标题翻译：用于辅助分配系统分析的设备和方法
公开(公告)号：JP2005057821A
公开(公告)日：2005-03-03
申请号：JP2003205319
申请日：2003-08-01
申请人： Hitachi Ltd , Tohoku Electric Mfg Co Ltd , Tohoku Electric Power Co Inc , 東北電力株式会社 , 東北電機製造株式会社 , 株式会社日立製作所
发明人： WATANABE MASAHIRO , MATSUBARA MASAHIRO , WADA MASARU , HIRANO SHINICHIRO , HIRAI YOSHIHIRO , TSUBOE YASUHIRO
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide analysis assisting equipment capable of assisting evaluation of the degree of properness of a distribution facility comprehensibly when the facility is established or reinforced in a distribution system. SOLUTION: System data 111 of a power system and data 112 and 113 defining each load of the system, quantity of power generation, or probability distribution of variation in feed out voltage are taken in from a file 11, stochastic power flow computation is performed, and probability distribution of the voltage at each node or probability distribution of the current in each line is determined. Average value and maximum/minimum values of the voltage or current, or the band at a predetermined probability are presented, as daily variation data, on the screen 101 of a display 10. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供分析辅助设备，能够在分配系统中建立或加强设备时，可以综合地评估分配设施的适当程度。解决方案：从文件11中获取电力系统的系统数据111和定义系统的每个负载，发电量或发送电压变化的概率分布的数据112和113，随机功率流计算并且确定每个节点处的电压的概率分布或每行中的电流的概率分布。作为日常变化数据，在显示器10的屏幕101上呈现电压或电流或预定概率的频带的平均值和最大/最小值。（C）2005，JPO和NCIPI

6. 发明专利

JP2005117787A Method and apparatus for interchanging distribution system load 有权
标题翻译：用于交换分配系统负载的方法和装置
公开(公告)号：JP2005117787A
公开(公告)日：2005-04-28
申请号：JP2003349178
申请日：2003-10-08
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： TAKAHASHI REIJI , INOUE HIROSHI , WADA MASARU , HONGO YASUJI
IPC分类号： H02J3/00 , H02J3/46
摘要： PROBLEM TO BE SOLVED: To minimize an influence exerted on a dispersion power source and a distribution system in a load interchange in the case of switching the distribution system in which many distribution power sources are interconnected. SOLUTION: A method for interchanging the distribution system load includes a step of sorting the dispersion power sources G(1) to G(3) into a plurality of references (a) to (c) for defining the influence exerted on the distribution system from its contract condition, the presence or absence of a reverse power flow to the distribution system, generated energy of the dispersion power source and the like. The method further includes a step of calculating a point of influence degree exerted on the dispersion power source and the distribution system based on a sorted result in addition to a basic reference "power interchange impossible quantity minimizing", "switching sequence minimizing" of a power interchange system evaluation, and a step of obtaining the load interchange system of generally highest evaluation. The method also includes a step of applying an optimized calculation using a genetic algorithm to this evaluation. In Fig., the point of the influence degree of each dispersion power source is assumed to be G(1):1, G(2): 5, and G(3): 10. The distribution system having smallest influence degree as a power transmission system to a power interruption (1) is decided as a power transmission from a feeder C. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在切换其中许多分配电源互连的分配系统的情况下，最小化对负载互换中的分散电源和分配系统的影响。解决方案：用于交换分配系统负载的方法包括将色散功率源G（1）至G（3）分类成多个参考（a）至（c）的步骤，以定义施加在分配系统分配系统从其合同条件，到配电系统的反向功率流的存在或不存在，分散电源的产生能量等。该方法还包括除了基本参考“电力交换不可能数量最小化”，“切换序列最小化”功率之外，基于排序结果计算施加在色散电源和分配系统上的影响点的影响程度的步骤交换系统评估，以及获得一般评价最高的负荷交换系统的步骤。该方法还包括使用遗传算法对该评估应用优化计算的步骤。在图中，假设每个色散电源的影响程度为G（1）：1，G（2）：5和G（3）：10.影响程度最小的配电系统为电力传输系统到电源中断（1）被确定为从馈线C的电力传输。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2008154418A Device and method for estimating state of distribution system, and program thereof 有权
标题翻译：用于估计分配系统状态的装置和方法及其程序
公开(公告)号：JP2008154418A
公开(公告)日：2008-07-03
申请号：JP2006342484
申请日：2006-12-20
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： WATANABE MASAHIRO , TAKAHASHI REIJI , YAMAZAKI MAKOTO , MATSUDA KATSUHIRO , WADA MASARU
IPC分类号： H02J3/00 , G01R35/00 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To provide a means for estimating a power flow state of a distribution system and errors in respective measuring apparatuses from voltage/current measurement values of the distribution system. SOLUTION: A state estimating device (10) is provided with a power flow calculating part reading a line constant, an initial value of a load/power generation amount and system structure data from a power flow calculating database (21) and calculating a distribution system state, comprising the load/power generation amount, node voltage and a line power flow by power flow calculation; and a distribution system state estimating part calculating the deviation, between a measurement value of the distribution system state stored in a measurement database (22) and the distribution system state, calculated by power flow calculation, calculating estimation value of sensor error data, showing the relation between a true value and the measurement value in each measurement device (170) and a correction amount of the distribution system state, which is calculated by power flow calculation, by solving a target function, formulized by using the deviation calculated by optimization calculation, and correcting the distribution system state calculated by power flow calculation by using the correction amount. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于从分配系统的电压/电流测量值估计分配系统的功率流动状态和各个测量装置中的误差的装置。解决方案：状态估计装置（10）具有读取线常数的功率流计算部，来自功率流计算数据库（21）的负载/发电量的初始值和系统结构数据，并计算分配系统状态，包括通过功率流计算的负载/发电量，节点电压和线路功率流; 以及分配系统状态估计部分，计算在测量数据库（22）中存储的分配系统状态的测量值与通过功率流计算计算的分配系统状态之间的偏差，计算传感器误差数据的估计值，通过求解通过使用通过优化计算计算的偏差而制定的目标函数，通过功率流量计算计算出的每个测量装置（170）中的真实值和测量值之间的关系以及分配系统状态的校正量，以及通过使用校正量来校正通过功率流计算计算的分配系统状态。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2009261226A Method, device, and program for detecting operation status of distributed power supply 有权
标题翻译：用于检测分布式电源的操作状态的方法，设备和程序
公开(公告)号：JP2009261226A
公开(公告)日：2009-11-05
申请号：JP2009061834
申请日：2009-03-13
申请人： Central Res Inst Of Electric Power Ind , Tohoku Electric Power Co Inc , Tohoku Keiki Kogyo Kk , 東北計器工業株式会社 , 東北電力株式会社 , 財団法人電力中央研究所
发明人： ASARI MASAHIRO , NAKANO YUKIO , ONODA TAKASHI , ITO NORIHIKO , MATSUDA KATSUHIRO , WADA MASARU , TAMAKI SHINKO , YOSHIDA MUTSUMI , HANKO NAOKI
IPC分类号： H02J3/38 , H02J3/00 , H02J13/00
CPC分类号： Y02E40/72 , Y04S10/12
摘要： PROBLEM TO BE SOLVED: To allow the operation status of a distributed power supply to be determined without directly mounting a measuring instrument to the distributed power supply mounted in a consumer home. SOLUTION: Operation status case data is read that is actual data combining the measurement values of the effective power and power factor at an inlet of a consumer home at each measurement point of time with the measurement values for the operation status of a distributed power supply mounted in the consumer home at each measurement point of time (S1-1). In the next, an operation status determination aspect is generated using the operation status case data by a support vector machine to determine an identification function (S1-2). Thereafter, the new measurement values of the effective power and power factor at the inlet of the consumer home are accepted as an input (S2-1). Finally, the operation status of the distributed power supply mounted in the consumer home is determined in accordance with the determined identification function and the newly measured and input measurement values (S2-2). COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了在没有将测量仪器直接安装到安装在消费者家庭中的分布式电源的情况下确定分布式电源的操作状态。
解决方案：读取操作状态案例数据，其是将每个测量点处的消费者家庭入口处的有效功率和功率因数的测量值与分布式的操作状态的测量值组合的实际数据电源在每个测量点安装在消费者家中（S1-1）。接下来，使用支持向量机的运算状况案例数据来生成运算状态判定方式，以确定识别功能（S1-2）。此后，消费者家庭入口处的有效功率和功率因数的新测量值被接受为输入（S2-1）。最后，根据确定的识别功能和新测量和输入的测量值来确定安装在消费者家庭中的分布式电源的操作状态（S2-2）。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2007205971A Current transformer, and instrument for measuring alternating current electric energy 审中-公开
标题翻译：电流互感器和用于测量交流电能的仪器
公开(公告)号：JP2007205971A
公开(公告)日：2007-08-16
申请号：JP2006026804
申请日：2006-02-03
申请人： Tohoku Electric Power Co Inc , Tohoku Keiki Kogyo Kk , 東北計器工業株式会社 , 東北電力株式会社
发明人： WADA MASARU , MATSUDA KATSUHIRO , TAMAKI SHINKO , YOSHIDA MUTSUMI , HANKO NAOKI
IPC分类号： G01R22/00 , G01R1/22 , G01R15/18
摘要： PROBLEM TO BE SOLVED: To provide a current transformer and an instrument for measuring an alternating current electric energy, which are installed in a narrow place, easily correct a phase difference and a current transformation ratio, and allow precise and wide-ranged measurement. SOLUTION: This current transformer 10 has a storage part 15 for storing a correction value as to the phase difference and the current transformation ratio between a preliminarily measured current and a secondary side current. This current transformer 10 has also a current component output terminal 16 for outputting a current component signal based on the secondary side current, and the phase difference and the correction value stored in the storage part 15. A measuring instrument main body 20 has a current component input terminal 21 which is connected disconnectably to the current component output terminal 16, and inputs the current component signal, the phase difference and the correction value. The measuring instrument main body 20 has also a computing part 23 for phase-correcting the input current component signal, based on the input phase difference, and for calculating the electric energy, based on the phase-corrected current component signal, a voltage and the input correction value. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供安装在狭窄的位置的电流互感器和用于测量交流电能的仪器，容易校正相位差和当前变换比，并允许精确和广泛的测量。解决方案：该电流互感器10具有用于存储关于预测电流和次级侧电流之间的相位差和电流变换比的校正值的存储部15。该电流互感器10还具有用于基于次级侧电流输出电流分量信号的电流分量输出端子16以及存储部15中存储的相位差和校正值。测量仪器主体20具有电流分量输入端子21，其与电流分量输出端子16可拆卸地连接，并输入电流分量信号，相位差和校正值。测量仪器主体20还具有计算部件23，用于根据输入的相位差对输入的电流分量信号进行相位校正，并且基于相位校正的电流分量信号来计算电能，电压和输入校正值。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2009257870A Method for detecting phase voltage of three-phase distribution line, zero-phase voltage, line voltage, phase voltage higher harmonic wave of three-phase distribution line, zero-phase voltage higher harmonic wave, and line voltage higher harmonic wave and voltage detecting apparatus used for detection in the method 审中-公开
标题翻译：用于检测三相分配线的相电压，三相电压，线电压，相电压三相分配线的高次谐波，零相电压高谐波和线电压高谐波和电压检测装置的方法用于检测方法
公开(公告)号：JP2009257870A
公开(公告)日：2009-11-05
申请号：JP2008105567
申请日：2008-04-15
申请人： Nakajima Denki Seisakusho:Kk , Tohoku Electric Power Co Inc , 東北電力株式会社 , 株式会社中島電機製作所
发明人： HAYASHI EIJI , MAKIGUCHI HIROSHI , OSAKABE HAYAYOSHI , WADA MASARU , MATSUDA KATSUHIRO
IPC分类号： G01R19/00
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting a phase voltage of a three-phase distribution line, a zero-phase voltage, and a line voltage which is hardly affected by changes in ambient temperature.
SOLUTION: A main capacitor and a voltage shunt capacitor are serially connected between each phase of a three-phase distribution line and the ground. A shunt resistor and a temperature-sensing resistor are connected to the voltage shunt capacitor in parallel. The main capacitor is a capacitor having such characteristics that its capacitance may be increased and reduced in inverse proportion to temperature changes and its impedance may proportionally be increased and reduced by this. The temperature-sensing resistor is a resistor of which the resistance value is increased and reduced in proportion to temperature changes. A line-to-ground voltage of each phase is shunted on the basis of the electrostatic capacitance of both capacitors. A phase voltage is detected by the shunt resistor and the temperature-sensing resistor by the voltage shunt capacitor. A detection voltage (phase voltage) of each phase is combined to detect a zero-phase voltage of the three-phase distribution line. On the basis of the voltage difference of detected detection voltages (phase voltages) between an R-phase and an S-phase, a voltage difference of detection voltages (phase voltages) between the S-phase and a T-phase; and a voltage difference of detection voltages (phase voltages) between the R-phase and the T-phase, each line voltage is detected.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供几乎不受环境温度变化影响的三相配线，零相电压和线电压的相电压检测方法。解决方案：主电容器和电压分流电容器串联连接在三相配电线路的各相和地之间。分流电阻和温度感测电阻并联连接到电压分流电容器。主电容器是具有这样的特性的电容器，其电容可以与温度变化成反比地增加和减小，并且其阻抗可按比例增加和减少。温度检测电阻是电阻值增加并与温度变化成正比的电阻值。每相的线对地电压基于两个电容器的静电电容分流。相电压由分流电阻和温度感测电阻由电压分流电容器检测。组合各相的检测电压（相电压），以检测三相配电线路的零相电压。基于检测到的R相和S相之间的检测电压（相电压）的电压差，S相与T相之间的检测电压（相电压）的电压差; 和R相与T相之间的检测电压（相电压）的电压差，检测各线电压。版权所有（C）2010，JPO＆INPIT

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