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1. 发明专利

JP2011135688A Power system stabilizing apparatus and method of controlling the same 有权
标题翻译：电力系统稳定装置及其控制方法
公开(公告)号：JP2011135688A
公开(公告)日：2011-07-07
申请号：JP2009292537
申请日：2009-12-24
申请人： Chubu Electric Power Co Inc , Toshiba Corp , 中部電力株式会社 , 株式会社東芝
发明人： SHIMOMURA KIMIHIKO , MAEKAWA KAZUO , HIRANO DAIGO , SUZUKI KOJI , KIMURA MISAO , KOMATA KAZUYA , NAKAMURA TADASHI , KAJIWARA TOSHIYUKI
IPC分类号： H02J3/24 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To obtain a power system stabilizing apparatus capable of stabilizing both frequencies and voltages of a separate system, and to provide a method of controlling the same.
SOLUTION: At a control execution unit 29, two-staged control, i.e., first-stage control and second-stage control, is sequentially carried out. A second-stage control selection unit 24 selects either disconnection of generators 1a to 1c or loads 5a to 5c or disconnection or connection of phase modifying devices 6a to 6c as control operation in the second-stage control based on the following combination: a combination of the plus or minus of a frequency variation and the plus or minus of a voltage variation obtained when a certain time has passed after the execution of the first-stage control. Each operation amount in the second-stage control is computed by a correction effective power control computation unit 25, a correction reactive power control computation unit 26, an emergency effective power control computation unit 27, and an emergency reactive power control computation unit 28.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了获得能够稳定单独系统的频率和电压的电力系统稳定装置，并且提供一种控制它的方法。解决方案：在控制执行单元29处，依次执行两级控制，即第一级控制和第二级控制。第二级控制选择单元24基于以下组合，选择发电机1a至1c的断开或负载5a至5c或相位修改设备6a至6c的断开或连接作为第二级控制中的控制操作：组合频率变化的加或减，以及在执行第一级控制之后经过一定时间时获得的电压变化的正负。校正有效功率控制计算单元25，校正无功功率控制计算单元26，紧急有功功率控制计算单元27和紧急无功功率控制计算单元28来计算第二级控制中的每个操作量。 P>版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2007181387A Method for determining power system transient stability and its equipment 有权
标题翻译：确定电力系统瞬态稳定性及其设备的方法
公开(公告)号：JP2007181387A
公开(公告)日：2007-07-12
申请号：JP2006170418
申请日：2006-06-20
申请人： Chubu Electric Power Co Inc , Toshiba Corp , 中部電力株式会社 , 株式会社東芝
发明人： SATO TAKASHI , NIWA YOSHIHITO , TAKASAKI KOTARO , KOMATA KAZUYA , NISHIIRI HIDEAKI , TAGUCHI HIROYUKI
IPC分类号： H02J3/00 , H02J3/24
摘要： PROBLEM TO BE SOLVED: To provide a method which accurately groups power generators into stable and unstable ones, in consideration with the accumulated energy during the accident and the conditions of a system after the accident has been removed when a supposed accident has occurred. SOLUTION: For each of the supposed accidents to be set in and after a supposed accident setup step 12, this power system transient stability determination method comprises a stability simulation step 13 for calculating the detailed stability of a power system by using the initial condition of the power system, a 2-generator model creation step 14 for creating an equivalent 2-generator model based on the power generator internal voltage vector and power generator's effective power output obtained in the preceding step and the preset power generator classification information, a step 15 for estimating a system admittance between two-condensed power generators which constitutes this 2-generator model, and a stability determination evaluation step 16 for determining stability by an extended equal area criterion. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种将发电机精确地分组为稳定且不稳定的发电机的方法，考虑到事故期间的累积能量和事故发生后的系统的状况已经在发生了所谓的事故时被去除。
解决方案：对于在假设事故设置步骤12之后和之后设置的每个假想事故，该电力系统瞬态稳定性确定方法包括稳定性模拟步骤13，用于通过使用初始值来计算电力系统的详细稳定性电力系统的条件，用于基于在前一步骤中获得的发电机内部电压矢量和功率发生器的有效功率输出和预设发电机分类信息来创建等效的2发电机模型的2发电机模型创建步骤14，步骤15，用于估计构成该2发生器模型的双重浓缩发电机之间的系统导纳;以及稳定性确定评估步骤16，用于通过延长的等面积准则确定稳定性。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2004064884A Single operation detecting apparatus of distributed power supply 审中-公开
公开(公告)号：JP2004064884A
公开(公告)日：2004-02-26
申请号：JP2002219677
申请日：2002-07-29
申请人： Chubu Electric Power Co Inc , Toshiba Corp , 中部電力株式会社 , 株式会社東芝
发明人： NAKACHI YOSHINORI , TAKAGI TERUO , KOMATA KAZUYA , SATO SHIGERU , ISHIBASHI SATORU
IPC分类号： H02J3/38
摘要： PROBLEM TO BE SOLVED: To detect a single operation of a dispersively distributed power supply with a high detecting sensitivity at low cost. SOLUTION: A single operation detecting apparatus of the dispersively distributed power supply for detecting the single operation of the dispersively distributed power supply based on a state quantity detected near the distributed power supply to conduct parallel off from a power distribution system when the power distribution system connected with the distributed power supply and a load of other general demander is separated from a host power system to become the single system due to an accident or the like of a power distribution line includes a voltage phase angle difference detecting means for detecting a voltage phase angle difference between a plurality of reference buses including one place of the host power system and a connecting bus of the distributed power supply, a judging means for judging whether the distributed power supply is the single operation or not based on the voltage phase angle difference detected by this voltage phase angle difference detecting means and a preset threshold value, and a parallel off control means for conducting the parallel off by the distributed power supply from the power distribution system when the distributed power supply is judged to be the single operation by the judging means. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2013219901A Short circuit capacity monitoring method of power system, and system of the same 有权
标题翻译：电力系统短路容量监测方法及其系统
公开(公告)号：JP2013219901A
公开(公告)日：2013-10-24
申请号：JP2012087677
申请日：2012-04-06
申请人： Toshiba Corp , 株式会社東芝 , Chubu Electric Power Co Inc , 中部電力株式会社
发明人： KOSAKA YOKO , KOBAYASHI TAKENORI , TAKABAYASHI YOSHIKI , KOMATA KAZUYA , SURESH CHAND VERMA , WAZAWA YOSHIHIKO , NAKACHI YOSHINORI
IPC分类号： H02J3/00 , G06Q50/06 , H02J13/00
CPC分类号： G01R31/40 , G01R19/2513 , G01R27/16 , H02J13/0006 , Y02E60/728 , Y02E60/74 , Y04S10/265 , Y04S10/30
摘要： PROBLEM TO BE SOLVED: To provide a short circuit capacity monitoring method of a power system and a system of the same which can provide a short circuit capacity matching the actual conditions of a desired section for knowing and monitoring by performing data correction to eliminate influences due to a time change of a system frequency using a plurality of data obtained by performing a synchronous measurement at a plurality of measuring points.SOLUTION: In a short circuit capacity monitoring method of a power system, a synchronous measurement terminal 5 temporally and synchronously measures phasor quantity D101 of voltage/current at respective measurement points 1, 2. A dataset generation unit 91 of a short circuit capacity monitoring apparatus 7 generates a dataset D102 having a plurality of data number n every measurement period Δt on the basis of the phasor quantity D101 of the voltage/current. Phase correction means 92 performs phase correction of the phasor quantity by using the dataset D102 to generate dataset D102'. Rear impedance estimation means 93 estimates rear impedance D103' by using the dataset D102'.
摘要翻译：要解决的问题：提供一种电力系统及其系统的短路容量监测方法，其可以通过执行数据校正来提供与期望的部分的实际条件匹配的用于知识和监测的短路容量，以消除到期的影响使用通过在多个测量点进行同步测量而获得的多个数据的系统频率的时间变化。解决方案：在电力系统的短路容量监测方法中，同步测量终端5在时间上和同步地测量相量各个测量点1,2的电压/电流的数量D101。短路容量监视装置7的数据集生成单元91基于相量生成每个测量周期＆Dgr; t具有多个数据数n的数据集D102 数量D101的电压/电流。相位校正装置92通过使用数据集D102来生成数据集D102'来执行相量的相位校正。后阻抗估计装置93通过使用数据集D102'来估计后阻抗D103'。

5. 发明专利

JP2004282887A Stabilizer for electric power system 有权
标题翻译：电力系统稳定器
公开(公告)号：JP2004282887A
公开(公告)日：2004-10-07
申请号：JP2003070045
申请日：2003-03-14
申请人： Chubu Electric Power Co Inc , Tm T & D Kk , ティーエム・ティーアンドディー株式会社 , 中部電力株式会社
发明人： KOTANI HIDEKI , ONOE YUKIHIRO , MIWA YASUSHI , TATE RYUJI , KOMATA KAZUYA , SATO SHIGERU , ISHIBASHI SATORU
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To stabilize the system without excessively blocking generators, even if a stabilizer is applied to a local system which has short reclosing time. SOLUTION: The stabilizer for electric power systems operates as follows: based on the number of generators in operation and their outputs, before and after the occurrence of an accident in a transmission line in proximity with a generator group, where step-out of the electric power system is predicted and the measured values of bus voltage in proximity to the generators and generator currents, the phase angle fluctuation of the generator group, after the accident is removed is computed; the phase angle fluctuations of the generator group a short time ahead is computed with estimate; and if step-out of the generator group is forecasted based on the result of the computation, a part of the generators are blocked. The stabilizer is provided with a reclosing stabilization evaluating means 9, which is fed with an estimated value of the phase angle fluctuations of the generator group in the estimated reclosing time of the faulty transmission line, the total output of the generator group before the occurrence of the accident, the driving point reactance value after reclosing when the electric power system is viewed from the bus in proximity to the generators, and parameters including preset generator constants, and decides as being after reclosing if the electric power system is judged as unstable, the generators are blocked. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使将稳定器应用于具有短的重合闸时间的本地系统，也不会过度地阻塞发电机来稳定系统。解决方案：电力系统稳定器的运行方式如下：根据运行中的发电机数量及其输出，在发电机组附近的传输线路中发生事故之前和之后，并计算出发生器和发电机电流接近的总线电压的测量值，发生器组的相位角波动在事故消除后; 通过估计计算发电机组在短时间内的相位角波动; 并且如果基于计算结果来预测发电机组的步出，则部分发电机被阻断。稳定器配备有重合闸稳定评估装置9，该装置在故障传输线的估计重合闸时间内馈送发电机组的相位角波动的估计值，发电机组发生前的总输出发生事故时，在从发电机附近的总线观看电力系统后重新闭合后的驱动点电抗值，以及包括预设发电机常数的参数，并且如果电力系统被判断为不稳定则判定为重合闸之后发电机被阻塞。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2009159735A Distribution system operation system and its method 有权
标题翻译：分配系统操作系统及其方法
公开(公告)号：JP2009159735A
公开(公告)日：2009-07-16
申请号：JP2007335206
申请日：2007-12-26
申请人： Tokyo Electric Power Co Inc:The , Toshiba Corp , Toshiba Syst Technol Corp , 東京電力株式会社 , 東芝システムテクノロジー株式会社 , 株式会社東芝
发明人： KOBAYASHI NAOKI , MOTOHASHI JUN , HIRAI TAKAO , KOMATA KAZUYA , NISHI AKINORI , TANAKA TOSHIO , KANEKO TAKESHI , HORI MASAO , FUKUDA KAZUNOBU
IPC分类号： H02J3/12 , H02J3/00 , H02J3/16 , H02J13/00
CPC分类号： Y02E40/34 , Y02E40/74 , Y02E60/726 , Y04S10/22 , Y04S10/24
摘要： PROBLEM TO BE SOLVED: To enable a stable distribution system operation by enabling power supply to a distribution system including an unexpected large consumer in a conventional manner and by maintaining the voltage of the entire power distribution lines at appropriate values. SOLUTION: The distribution system operation system for supplying power to a distribution system including a large consumer is equipped with multiple loops configured by linking a plurality of power distribution lines 3 via a circuit breaker 8, and with a voltage monitoring controller 16 for controlling the voltage in the distribution system. The voltage monitoring controller 16 estimates the voltage of the entire power distribution line based on the measured information of the plurality of nodes in the distribution system, and when the voltage is not within an appropriate range, the voltage monitoring controller controls the voltage in the distribution system by controlling the voltage regulators 1, 9 set in the distribution system. The multiple loops include distribution lines with and without a branched load. The voltage monitoring controller 16 controls the voltage in the distribution system by enlarging the appropriate range of the voltage in the distribution line without the branched load relative to the distribution line with the branched load, from among the plurality of distribution lines constituting the multiple loops. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过以常规方式为包括意外的大型消费者的分配系统供电并且通过将整个配电线路的电压维持在适当的值来实现稳定的配电系统操作。解决方案：用于向包括大型消费者的配电系统供电的分配系统操作系统配备有通过断路器8连接多个配电线路3和通过电压监视控制器16配置的多个回路控制配电系统中的电压。电压监视控制器16基于分配系统中的多个节点的测量信息来估计整个配电线路的电压，并且当电压不在适当的范围内时，电压监视控制器控制分配中的电压系统通过控制在配电系统中设置的电压调节器1,9。多个回路包括具有和不具有分支负载的分配线。电压监视控制器16从构成多个回路的多个配线中通过扩大分配线中的电压的适当范围而不具有相对于具有分支负载的分配线的分支负载的适当范围来控制分配系统中的电压。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2011193606A Solar power generation system 有权
标题翻译：太阳能发电系统
公开(公告)号：JP2011193606A
公开(公告)日：2011-09-29
申请号：JP2010056638
申请日：2010-03-12
申请人： Toshiba Corp , 株式会社東芝
发明人： KIMURA MISAO , NORO YASUHIRO , HAYASHI HIDEKI , KOMATA KAZUYA , ASANO TOSHIAKI , EHATA YOSHIO
IPC分类号： H02M7/48
CPC分类号： H02J9/00 , H02J3/28 , H02J3/383 , H02J3/40 , H02J3/48 , H02M7/42 , Y02E10/563 , Y02E10/566 , Y10T307/625
摘要： PROBLEM TO BE SOLVED: To provide a solar power generation system to be handled in the same way as a synchronous generator from the view point of overall supervisory control of a power system.
SOLUTION: The solar power generation system comprises: a DC power supply including a solar cell 3; a power conversion device 2 for converting a DC power output from the DC power supply to an AC power; a voltage detection unit 5 for detecting a voltage output from the power conversion device 2 to a power system 1; a current detection unit 6 for detecting a current output from the power conversion device 2 to the power system 1; an effective power detection unit 7 for detecting an effective power from the output of the voltage detection unit 5 and the output of the current detection unit 6; a mass-point system calculation unit 10 for calculating an angular frequency ω of the voltage output from the power conversion device 2, on the basis of the output from the effective power detection unit 7 and an output target value Pref of the effective power; an electric characteristic calculation unit 21 for calculating an output voltage target value Ec of the power conversion device 2, on the basis of the angular frequency ω, a detection current value IG, and a setting voltage value Vref; and a power conversion control unit 14 for controlling the power conversion device 2 according to the output voltage target value Ec.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：从电力系统的总体监控的角度来说，提供与同步发电机相同的方式来处理的太阳能发电系统。太阳能发电系统包括：包括太阳能电池3的直流电源; 用于将从DC电源输出的DC电力转换为AC电力的电力转换装置2; 用于检测从电力转换装置2输出到电力系统1的电压的电压检测单元5; 用于检测从电力转换装置2向电力系统1输出的电流的电流检测单元6; 用于从电压检测单元5的输出和电流检测单元6的输出检测有效功率的有效功率检测单元7; 基于有效功率检测单元7的输出和有效功率的输出目标值Pref，计算从电力转换装置2输出的电压的角频率ω的质点系统计算单元10; 电特性计算单元21，用于根据角频率ω，检测电流值IG和设定电压值Vref计算功率转换装置2的输出电压目标值Ec; 以及用于根据输出电压目标值Ec控制电力转换装置2的电力转换控制单元14。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2008125197A Short circuit protection system and method of distribution system 有权
标题翻译：短路保护系统及分配系统方法
公开(公告)号：JP2008125197A
公开(公告)日：2008-05-29
申请号：JP2006304560
申请日：2006-11-09
申请人： Tokyo Electric Power Co Inc:The , Toshiba Corp , 東京電力株式会社 , 株式会社東芝
发明人： NISHI AKINORI , KOMATA KAZUYA , TANAKA TOSHIO , HORI MASAO , FUKUDA KAZUNOBU , HIRAI TAKAO , KOBAYASHI NAOKI
IPC分类号： H02H7/26 , H02H3/38
摘要： PROBLEM TO BE SOLVED: To provide a short circuit protection system and a method of a distribution system which can minimize a blackout range by determining the direction of a fault and detecting the faults on the distribution lines constituting a loop exactly and interrupting the distribution line selectively.
SOLUTION: The short circuit protection system of a distribution system comprises a circuit 103 for detecting the differential circuit between a power supply substation terminal current and a current at a loop point at each distribution line using a power supply substation terminal current on each distribution line of a loop system supplying power, a current flowing through the loop point and a voltage of the loop system, a circuit 104 for determining the direction of a fault from the differential circuit and the voltage of the loop system, and a circuit 105 for detecting the faulty circuit out of the distribution lines constituting a loop based on the differential circuit and the direction of the fault.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种短路保护系统和分配系统的方法，其可以通过确定故障的方向并且精确地检测构成回路的配电线路上的故障来最小化停电范围，并且中断选择配线。解决方案：配电系统的短路保护系统包括电路103，用于使用每个配电线路上的电源变电站端子电流来检测电源变电站端子电流和每个配电线路的环路点处的电流之间的差分电路提供电力的环路系统的配电线路，流过环路点的电流和环路系统的电压，用于确定差分电路的故障方向和环路系统的电压的电路104以及电路105 用于基于差分电路和故障方向检测构成回路的配线的故障电路。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007312583A Device and method for protecting loop system 有权
标题翻译：用于保护环路系统的装置和方法
公开(公告)号：JP2007312583A
公开(公告)日：2007-11-29
申请号：JP2006142166
申请日：2006-05-22
申请人： Tokyo Electric Power Co Inc:The , Toshiba Corp , 東京電力株式会社 , 株式会社東芝
发明人： NISHI AKINORI , KOMATA KAZUYA , TANAKA TOSHIO , HORI MASAO , FUKUDA KAZUNOBU , MOTOHASHI JUN , HIRAI TAKAO , KOBAYASHI NAOKI
IPC分类号： H02H7/26
摘要： PROBLEM TO BE SOLVED: To minimize the blackout region by interrupting a faulty line exactly and selectively at a loop point with no influence of fault current supply from a large user upon occurrent of a fault in a loop system and cooperating with a protector on the substation side easily.
SOLUTION: Output from current transformers 7Ba-7Bc on each line at a loop point is input by a current input section 101 and converted by a current converting section 102. In a current calculating section 104, a current adding section 111 finds the total current of each line current, a compensation current calculating section 112 finds the compensation current of each line based on the impedance ratio of each line provided from an impedance ratio storage section 103 and the total current obtained at the current adding section 111, and a compensated current calculating section 113 finds the compensated current of each line based on the each line current converted at the current converting section 102, and the compensation current obtained at the compensation current calculating section 112. A faulty line decision section 105 decides a faulty line based on the compensated current of each line.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过在循环点处精确而有选择地中断故障线路来最小化停电区域，在循环系统中发生故障并且与保护器配合时不会对来自大用户的故障电流供应产生影响在变电站一侧容易。解决方案：由电流输入部分101输入一个环路点的每条线上的电流互感器7Ba-7Bc的输出，并由电流转换部分102转换。在当前计算部分104中，当前加法部分111找到每个线路电流的总电流，补偿电流计算部分112基于从阻抗比存储部分103提供的每条线路的阻抗比和在当前相加部分111获得的总电流来求出每条线路的补偿电流，并且补偿电流计算部113基于在当前转换部分102处转换的每个线路电流以及在补偿电流计算部分112获得的补偿电流来找出每条线路的补偿电流。故障线路决策部分105基于故障线路对每行补偿电流。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2005354835A Overload eliminator 有权
标题翻译：过载消除者
公开(公告)号：JP2005354835A
公开(公告)日：2005-12-22
申请号：JP2004174255
申请日：2004-06-11
申请人： Tohoku Electric Power Co Inc , Toshiba Corp , 東北電力株式会社 , 株式会社東芝
发明人： KUWAORI SHINICHI , GOTO KENICHI , TAGUCHI YASUHIRO , KOMATA KAZUYA , ISHIHARA YUJI
IPC分类号： H02J3/18
CPC分类号： Y02E40/30
摘要： PROBLEM TO BE SOLVED: To easily eliminate or prevent overload by the processing using a phase adjuster distribution matrix. SOLUTION: This overload eliminator is equipped with a phase adjuster distribution matrix making means; comprising a means 1 which computes the loop impedance when the side of a power distribution system is viewed from nodes at both ends to which phase adjusters are connected, using the phase matrix showing the relation between the quantity of currents injected into the nodes in a power system and the variation of the power flow in each branch and the reactance of phase adjusters, a means 2 which computes the relation between the variation of power flow at a point where a phase adjuster is installed and the variation of the power flow in each branch for a transformer or the like, and a means 3 which gets the relation among the loop impedance, the variation of the power flow at a point where the phase adjuster is installed, and the variation of the power flow in each branch and indicates it as a matrix; and a means which gets the amount of phase adjustment in a phase adjuster to eliminate overload, from the relation between the amount of phase adjustment in a phase adjuster and the variation of the power flow in each branch, using this phase adjuster distribution matrix. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过使用相位调节器分布矩阵的处理来容易地消除或防止过载。
解决方案：该过载消除器配有相位调节器分配矩阵制作装置; 包括当使用相位矩阵表示在功率分配系统的侧面从相关调节器所连接的两端的节点观察时的环路阻抗的装置1，该相位矩阵示出了以电力为单位注入节点的电流量之间的关系系统和每个分支中的功率流的变化和相位调节器的电抗;计算在安装相位调节器的点处的功率流的变化与每个分支中的功率流的变化之间的关系的装置2 用于变压器等的装置，以及获得环路阻抗，安装有相位调节器的点处的功率流的变化与每个分支中的功率流的变化之间的关系的装置3，并将其指示为矩阵以及使用该相位调整器分配矩阵，从相位调整器中的相位调整量与每个分支中的功率流的变化之间的关系中获得相位调整器中的相位调整量以消除过载的装置。版权所有（C）2006，JPO＆NCIPI

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