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1. 发明专利

JP2011050152A System stabilizing system 有权
标题翻译：系统稳定系统
公开(公告)号：JP2011050152A
公开(公告)日：2011-03-10
申请号：JP2009195501
申请日：2009-08-26
申请人： Mitsubishi Electric Corp , Okinawa Electric Power Co Ltd , 三菱電機株式会社 , 沖縄電力株式会社
发明人： OSHIDA HIDEJI , KOWADA YASUYUKI , MAEDA TORU , TAKAHASHI TAKAHIRO , HIGA YASUSHI , YAMASATO KENICHIRO , KANESHIMA YASUHIRO , KANESHIRO FUMINAO , OYAMA TOSHIKATSU , NAKAMATSU HISAHIRO , MIYAGI YUKITO
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a reliable system stabilizing system wherein a system can be properly and easily stabilized before the system frequency is deviated from a reduction tolerance limit.
SOLUTION: The system stabilizing system includes a means 101 for detecting continuous reduction in the effective power output PE of generators GA1, ..., GAn, and a means 102 for detecting continuous reduction in system frequency. When the effective power output PE of the generators and the system frequency F are both continuously reduced according to the detection by these means 101, 102, the system disconnects loads L1, L2, ..., Ln equivalent to the effective power output of the generators.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供可靠的系统稳定系统，其中系统可以在系统频率偏离减小容许限度之前被适当且容易地稳定。解决方案：系统稳定系统包括用于检测发电机GA1，...，GAn的有效功率输出PE的连续减小的装置101和用于检测系统频率的连续降低的装置102。当根据这些装置101,102的检测，当发电机的有效功率输出PE和系统频率F都连续地减小时，系统断开相当于有效功率输出的负载L1，L2，...，Ln 发电机。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2011019361A Power system stabilization system with load correction control function 有权
标题翻译：具有负载校正控制功能的电力系统稳定系统
公开(公告)号：JP2011019361A
公开(公告)日：2011-01-27
申请号：JP2009163269
申请日：2009-07-10
申请人： Hitachi Ltd , Okinawa Electric Power Co Ltd , 株式会社日立製作所 , 沖縄電力株式会社
发明人： TAKIGUCHI YUTAKA , KOMI YUTAKA , HIGA YASUSHI , YAMASATO KENICHIRO , KANESHIMA YASUHIRO , KANESHIRO FUMINAO , OYAMA TOSHIKATSU , NAKAMATSU HISAHIRO , MIYAGI YUKITO
IPC分类号： H02J3/24 , H02J3/00 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To prevent excess and deficiency control of the load control amount from occurring due to a difference between the power generation capacity of a generator which is adopted in the pre-operation and the power generation capacity of a generator just before drop-out, and causing deviation from a variation range of allowable frequency or the reference frequency in a pre-operation frequency stabilizer adopting on-line data.SOLUTION: When the power generation capacity 35 of the generator just before drop-out is taken into a stabilizer 2 which is operating a load control amount of each generator from on-line data, a difference decision means 24 and a correction load control amount decision means 25 calculate a correction control amount for a load control amount decision means 22 which corrects the pre-operation results and determines a proper amount of load interruption. Difference of the power generation capacity is corrected for the pre-operation results, and a proper amount of load control is determined by a low-burden simple operation, thus maintaining the allowable frequency.
摘要翻译：要解决的问题：为了防止由于在操作前采用的发电机的发电量与下降之前的发电机的发电量之间的差异而导致的负载控制量的过度和不足的控制，在使用在线数据的运行前稳压器中，允许频率或参考频率的变化范围偏离，并且在出厂前发电机发电量35被调入稳压器差分判定装置24和校正负载控制量判定装置25根据来自在线数据的每个发电机的负载控制量进行运算，计算负荷控制量判定装置22的校正控制量，结果并确定适当的负载中断量。对于运行前的结果，对发电量的差异进行了校正，并且通过低负荷的简单操作来确定适当的负载控制量，从而保持容许频率。

3. 发明专利

JP2011019362A System stabilization system with posteriori correction function 有权
标题翻译：系统稳定系统具有定位校正功能
公开(公告)号：JP2011019362A
公开(公告)日：2011-01-27
申请号：JP2009163270
申请日：2009-07-10
申请人： Hitachi Ltd , Okinawa Electric Power Co Ltd , 株式会社日立製作所 , 沖縄電力株式会社
发明人： SEKOGUCHI MASAHIRO , KOMI YUTAKA , HIGA YASUSHI , YAMASATO KENICHIRO , KANESHIMA YASUHIRO , KANESHIRO FUMINAO , OYAMA TOSHIKATSU , NAKAMATSU HISAHIRO , MIYAGI YUKITO
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To provide a system frequency stabilizing device which copes with many factors that arise, when accurately balancing between supply and demand, if the route of a trunk line is interrupted by a system accident.SOLUTION: A power system frequency stabilizing device 1 includes: a means for always measuring the output of generators 4 in a system and a load power-flow value of a main transformer substation; an accident-signal transmitting means for transmitting an accident signal to a system frequency stabilizing means, when an accident is detected; a part for preliminarily calculating a control amount that preliminarily calculates a control amount required, when the system accident occurs by using an electric-circuit model in the system and on-line data; and a correction control amount calculating part for calculating a correction control amount, on the basis of the generator drop amount, load drop amount, and observation value of a change in system frequency. Consequently, control with a required minimum control amount is executed and effects on the system based on excessive control are avoided, and thereby quick, stable, and accurate convergence of the frequency oscillation of a separated system to a target value is available.
摘要翻译：要解决的问题：提供一种系统频率稳定装置，能够在准确地平衡供需时，如果干线的路由被系统事故中断，则可以应付出现的许多因素。解决方案：一种电力系统频率稳定装置 1包括：用于总是测量系统中发电机4的输出和主变电站的负载功率流值的装置; 事故信号发送装置，用于当检测到事故时，将事故信号发送到系统频率稳定装置; 预先计算当通过使用系统中的电路模型发生系统事故和在线数据时预先计算所需的控制量的控制量的部分; 以及校正控制量计算部分，用于基于发电机下降量，负载下降量和系统频率变化的观测值来计算校正控制量。因此，执行具有所需最小控制量的控制，并且避免了基于过度控制的对系统的影响，从而可以将分离的系统的频率振荡的快速，稳定和准确的收敛到目标值。

4. 发明专利

JP2008167528A Frequency controller and frequency control method 有权
标题翻译：频率控制器和频率控制方法
公开(公告)号：JP2008167528A
公开(公告)日：2008-07-17
申请号：JP2006352014
申请日：2006-12-27
申请人： Central Res Inst Of Electric Power Ind , Okinawa Electric Power Co Ltd , 沖縄電力株式会社 , 財団法人電力中央研究所
发明人： AMANO HIROYUKI , INOUE TOSHIO , OYAMA TOSHIKATSU , HIGA YASUSHI , YAMASATO KENICHIRO , KANESHIMA YASUHIRO , KANESHIRO FUMINAO , NAKAMATSU HISAHIRO , MIYAGI YUKITO
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To compute the amount of load limitation at power drop accurately and simply. SOLUTION: A spinning reserve computer 150 computes spinning reserve activated in each generator when frequency reaches a value (a tolerable lower limit value + margin), according to the present operation state (output, GF operation/LL operation, and ambient temperature) of a generator, by simple computation accurately, and the first stage load limitation amount computer 160 computes the amount of load limitation at power drop, by subtracting the total of spinning reserve of each generator, the amount of load drop, and the amount of load decrease from the amount of power drop. A second stage load limitation amount computer 180 computes the amount of load limitation on the second stage, based on the change of frequency, in addition to the first stage control based on the amount of load limitation computed by the first stage load limitation amount computer 160, thus it is provided with second-stage control. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：准确，简单地计算掉电负载限制的量。解决方案：旋转储备计算机150根据当前的运行状态（输出，GF运行/ LL运转，环境温度等），在频率达到值（容许下限值+余量）的情况下，计算出在各发电机中激活的旋转储备），通过简单计算，第一级负载限制量计算机160通过减去每个发电机的旋转储备的总和，负载的下降量以及负载的下降量，计算掉电时的负载限制量负载从功率下降量减少。除了基于由第一级负载限制量计算机160计算出的负载限制量的第一级控制之外，第二级负载限制量计算机180还基于频率的变化来计算第二级的负载限制量，因此提供了第二级控制。版权所有（C）2008，JPO＆INPIT

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