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11. 发明专利

JP2011114956A Stable-operation control device for micro grid 审中-公开
标题翻译：用于微网的稳定操作控制装置
公开(公告)号：JP2011114956A
公开(公告)日：2011-06-09
申请号：JP2009269478
申请日：2009-11-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SEKOGUCHI MASAHIRO , FUKUI CHIHIRO , YAMADA TETSUO
IPC分类号： H02J3/38 , H02J13/00 , H02P9/04
CPC分类号： Y02E40/72 , Y04S10/12
摘要： PROBLEM TO BE SOLVED: To provide an effective and appropriate control method that stably and efficiently executes frequency control of distributed power supplies.
SOLUTION: A control method for distributed power supplies is configured as follows. When executing power fluctuation compensation by cooperatively controlling distributed power supplies respectively having following performance to changes in power demand, time-series data of load variations to be compensated and frequency variations are statistically analyzed. Consequently, the load variations are separated into controllable components and unpredictable load variations in frequency bands so as to maximally reduce an amount of compensation by making any one of the respective distributed power supplies share the load variations. The magnitude of the load variations to be shared and compensated by each distributed power supply is set so as to control the output of each distributed power supply, thereby compensating unpredictable random load variations in the frequency bands.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种稳定有效地执行分布式电源的频率控制的有效和适当的控制方法。解决方案：分布式电源的控制方法如下。通过协同控制对功率需求变化具有以下性能的分布式电源进行功率波动补偿时，统计分析要补偿的负载变化的时间序列数据和频率变化。因此，负载变化被分成可控组件和频带中不可预测的负载变化，以便通过使相应的分布式电源中的任一个共享负载变化来最大限度地减少补偿量。设定由各个分布式电源共享和补偿的负载变化的大小，以便控制每个分布式电源的输出，由此补偿频段中的不可预测的随机负载变化。版权所有（C）2011，JPO＆INPIT

12. 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。

13. 发明专利

JP2009044857A Apparatus and method for diagnosing stability of electric power system 有权
标题翻译：用于诊断电力系统稳定性的装置和方法
公开(公告)号：JP2009044857A
公开(公告)日：2009-02-26
申请号：JP2007206863
申请日：2007-08-08
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： SEKOGUCHI MASAHIRO , FUKUI CHIHIRO , MADORI IWAO , MAKINO JUNICHI , HANAMOTO KONOSUKE , KATAYAMA TAKASHI , TAKAHASHI CHIYOUEI , SHIRASAKI TAKASHI
IPC分类号： H02J3/00 , H02J3/24
摘要： PROBLEM TO BE SOLVED: To detect a dominant characteristic value corresponding to a system characteristic oscillation mode. SOLUTION: A power system stability diagnosis apparatus 12 extracts a dominant characteristic value from time-series observational data as follows: it computes a dominant mode power spectrum and a low-frequency noise range spectrum by a frequency component analyzing means 2; it computes the amount of a low-frequency noise component relative to a dominant mode component by a low-frequency noise amount determining means 3; it applies an autoregressive model and computes a characteristic value of each order by a characteristic value analyzing means 4; it screens them by a frequency screening means 5; and it changes and applies a dominant mode extraction technique according to the amount of the low-frequency noise component determined by the low-frequency noise amount determining means 3 and extracts the dominant characteristic value from among the multiple remaining characteristic values. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：检测与系统特性振荡模式对应的主要特性值。解决方案：电力系统稳定性诊断装置12从时间序列观测数据中提取主要特征值如下：其通过频率分量分析装置2计算主模式功率谱和低频噪声范围谱; 它通过低频噪声量确定装置3计算相对于主模式分量的低频噪声分量的量; 它应用自回归模型，并通过特征值分析装置4计算每个顺序的特征值; 它通过频率筛选装置5屏蔽它们; 并且根据由低频噪声量确定装置3确定的低频噪声分量的量改变并应用主模式提取技术，并从多个剩余特征值中提取主要特性值。版权所有（C）2009，JPO＆INPIT

14. 发明专利

JP2006101619A Power system stability diagnosis device, power system stabilizer, and power system contraction support device 有权
标题翻译：电力系统稳定性诊断装置，电力系统稳定器和电力系统承包支援装置
公开(公告)号：JP2006101619A
公开(公告)日：2006-04-13
申请号：JP2004283535
申请日：2004-09-29
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： SEKOGUCHI MASAHIRO , HARADA YASUSHI , MADORI IWAO , KATAYAMA TAKASHI , WAYAMA WATARU , TAMURA MITSUNARI , NIHEI ATSUSHI
IPC分类号： H02J3/00 , H02J3/24
摘要： PROBLEM TO BE SOLVED: To detect a dominant characteristic value having a system characteristic oscillation mode. SOLUTION: This power system stability diagnosis device 10 operates a characteristic value of each order by using a characteristic value analysis means 3 by applying an autoregressive model with respect to time series measurement data, performs screening to the operated characteristic value by a frequency screening means 4, and extracts the dominant characteristic value from a plurality of the remaining characteristic values by applying a dominant mode extraction method. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：检测具有系统特性振荡模式的主要特性值。解决方案：该电力系统稳定性诊断装置10通过使用特征值分析装置3对相对于时间序列测量数据应用自回归模型来操作各阶的特征值，对所操作的特征值进行频率的筛选筛选装置4，并且通过应用主模式提取方法从多个剩余特征值中提取主要特征值。版权所有（C）2006，JPO＆NCIPI

15. 发明专利

JPS60187234A SYSTEM STABILIZER 失效
公开(公告)号：JPS60187234A
公开(公告)日：1985-09-24
申请号：JP3859484
申请日：1984-03-02
申请人： HITACHI LTD
发明人： SEKOGUCHI MASAHIRO
IPC分类号： H02J3/24

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