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    • 52. 发明专利
    • System stabilization control system
    • 系统稳定控制系统
    • JP2008148487A
    • 2008-06-26
    • JP2006334344
    • 2006-12-12
    • Mitsubishi Electric Corp三菱電機株式会社
    • OSHIDA HIDEJIKOWADA YASUYUKISASAKI TAKASHI
    • H02J3/24H02P9/00
    • PROBLEM TO BE SOLVED: To improve system stabilization control in a system stabilization control system in view of the fact that a fluctuation period of a power system is affected by power generator capacity, an inter-power generator distance, a power generator control system or the like, and when using a fixed fluctuation estimation expression, some systems to which the system stabilization control system is installed cause an error in the estimation of the power generator output due to the mismatch between the fluctuation period and the estimating expression, resulting in failure to secure the accuracy of stabilization control. SOLUTION: The system stabilization control system OLSS suppresses the effective power fluctuation after failure removal in a local system by controlling the effective power by partially shutting down the operating generator on the occurrence of failures to maintain stability in a local system wherein a plurality of generators G1 to Gn are operated concurrently. System stabilization control is carried out based on the estimation of the effective power fluctuation by the estimation expression corresponding to the cycle of the effective power fluctuation. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了改善系统稳定控制系统中的系统稳定性控制,考虑到电力系统的波动周期受发电机容量,发电机间距,发电机控制 系统等,并且当使用固定波动估计表达式时,系统稳定控制系统被安装的一些系统由于波动周期和估计表达式之间的不匹配而导致在发电机输出的估计中的误差,导致 无法确保稳定控制的准确性。 解决方案:系统稳定控制系统OLSS通过在出现故障的情况下部分关闭操作发电机来控制有效功率来抑制本地系统故障消除后的有效功率波动,以保持本地系统的稳定性,其中多个 的发电机G1〜Gn同时工作。 基于有效功率波动的估计,通过与有效功率波动的周期对应的估计表达式进行系统稳定控制。 版权所有(C)2008,JPO&INPIT
    • 53. 发明专利
    • System stabilization control system
    • 系统稳定控制系统
    • JP2007209085A
    • 2007-08-16
    • JP2006023030
    • 2006-01-31
    • Mitsubishi Electric Corp三菱電機株式会社
    • SASAKI TAKASHIKOWADA YASUYUKIOSHIDA HIDEJI
    • H02J3/24H02J3/00
    • PROBLEM TO BE SOLVED: To make a desired system stabilization control device of each power plant control system stabilization without using a terminal device and a transmission channel. SOLUTION: The system stabilization system is constituted such that: power plant bus bars BA, BB are connected via cables to an intermediate bus bar B4 connected to a main system via a cable, respectively; the system stabilization control devices 10A, 20B are arranged in a plurality of the power plants 1, 2, respectively, which are constituted of a plurality of generators connected to the power plant bus bars via blockers CB, respectively; the own system stabilization control device of each power plant is autonomously operated when an accident occurs in the cable; and the plurality of generators in the self power plant are controlled so as to selectively be cut off from the power plant bus bar of the self power plant by the blockers. It is determined whether each system stabilization control device is in a mode that the generator in the self power plant is cut off from an electricity amount at a self-end in the occurrence of the accident, and when it is determined that the device in not in the mode that the generator of the self power plant is cut off, the generator cut-off control of the self power plant is locked. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了使每个发电厂控制系统的期望的系统稳定控制装置稳定而不使用终端装置和传输通道。 解决方案:系统稳定系统构成为:发电厂母线BA,BB通过电缆分别连接到通过电缆连接到主系统的中间母线B4; 系统稳定控制装置10A,20B分别布置在多个发电厂1,2中,这些发电厂分别由经由阻塞器CB连接到发电厂汇流条的多个发电机构成; 当电缆发生事故时,每个发电厂自身的系统稳定控制装置自动运行; 并且控制自发电厂中的多个发电机,以便通过阻断器选择性地从自发电厂的发电厂汇流条切断。 确定每个系统稳定控制装置是否处于在发生事故时在自发电厂中的发电机从自身的电量切断的模式,并且当确定该装置不在 在自动发电厂的发电机被切断的模式下,自动发电厂的发电机切断控制被锁定。 版权所有(C)2007,JPO&INPIT
    • 54. 发明专利
    • Load characteristic estimator
    • 负载特性估计器
    • JP2006217717A
    • 2006-08-17
    • JP2005027125
    • 2005-02-03
    • Chubu Electric Power Co IncMitsubishi Electric Corp三菱電機株式会社中部電力株式会社
    • SASAKI TAKASHIKOWADA YASUYUKIHOSHINO YUKIOSURESHI CHAND VERMAKOBAYASHI RYOJI
    • H02J3/00
    • PROBLEM TO BE SOLVED: To obtain a load characteristic estimator which can precisely estimate load characteristics even in case that the influence of generator sway is included in the measured data of a monitoring bus by constructing a load model expression which enables the consideration of the influence of generator sway. SOLUTION: This load characteristic estimator is equipped with a model expression setting means 1 which sets a load model expression, a measuring means 2 which measures the various electric quantities of the monitoring bus, an accident detecting means 3 which detects the accident of a power system, based on the above various electric quantities, a data accumulating means 4 which accumulates the above measured data in a specified sampling period since occurrence of an accident, a parameter calculating means 5 which calculates the parameter of the above load model expression, under the conditional expression that the synthesis of the generator output property being the output of the generator within the power system and the load characteristics by the above load model expression is equal to the load power quantity, based on the accumulated measured data, and a load characteristic estimating means 6 which estimates the above load model expression by applying a parameter calculated by this parameter calculating means 5. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了获得能够精确地估计负载特性的负载特性估计器,即使在发电机摆动的影响被包括在监视总线的测量数据中的情况下,通过构造能够考虑 发电机摆动的影响。 解决方案:该负载特性估计器配备有设定负载模型表达式的模型表达式设置装置1,测量监控总线的各种电量的测量装置2,检测事故的事故的事故检测装置3 基于上述各种电量的电力系统,在事故发生之后的指定采样周期中累积上述测量数据的数据累积装置4,计算上述负载模型表达式的参数的参数计算装置5, 在条件表达式中,基于累积的测量数据和负载,根据上述负载模型表达式,发电机输出特性的合成是发电机的输出和上述负载模型表达式的负载特性等于负载功率量 特征估计装置6,其通过应用由th计算的参数来估计上述负载模型表达式 是参数计算装置5。版权所有(C)2006,JPO&NCIPI
    • 56. 发明专利
    • Power-system stabilization control system
    • 动力系统稳定控制系统
    • JP2003319559A
    • 2003-11-07
    • JP2002117153
    • 2002-04-19
    • Mitsubishi Electric Corp三菱電機株式会社
    • SASAKI TAKASHIKOWADA YASUYUKI
    • H02J3/24
    • PROBLEM TO BE SOLVED: To provide a power-system stabilization control system capable of calculating electric controlled variable as optimum electric controlled variable because a conventional power-system stabilization control system had the severest assumed conditions to restrain the possibility of insufficient control due to a difference between an assumed accident, accident duration and generator output degradation, and an actual accident phase, which caused an excessive electric controlled variable. SOLUTION: With the accident duration in an accident previously assumed based on online information taken as a parameter, a plurality of control tables are prepared, the control table which meets accident duration in case of an accident or corresponds to the accident duration for safety side control is extracted, and power supply control is performed based on the control table. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种能够计算电控变量作为最佳电控变量的电力系统稳定控制系统,因为常规电力系统稳定控制系统具有最严格的假设条件以限制不足控制的可能性 假设事故,事故持续时间和发电机输出退化之间的差异以及导致过度电控变量的实际事故阶段。

      解决方案:根据以前在线信息作为参数事先假定的事故事故发生时间,准备好多个控制表,该控制表适用于事故发生时的事故持续时间或对应于事故持续时间 提取安全侧控制,并且基于控制表执行电源控制。 版权所有(C)2004,JPO

    • 59. 发明专利
    • HELICAL COIL WINDING DEVICE
    • JPH0427109A
    • 1992-01-30
    • JP2913090
    • 1990-02-07
    • MITSUBISHI ELECTRIC CORP
    • SASAKI TAKASHI
    • H01F41/08
    • PURPOSE:To prevent interference with a conductor and a side wall of a core body coil storage groove and achieve a smooth coil winding operation by providing a conductor guide to a coil winding head and allowing a position for supplying the conductor through the conductor guide to be adjusted according to a shape of the coil storage groove. CONSTITUTION:A coil winding head 11 is constituted so that it can rotate on a rail 12. A conductor guide 16 is formed for example in cylindrical surface shape and a fluorine plastic coating is provided on the surface to enable a superconductive wire 14 to be smooth. The conductor guide 16 is fitted to the coil winding head 11. It moves in a specified helical shaped orbit along with the coil winding head 11. It is constituted so that the position and direction of the conductor guide 16 can be adjusted within a specified range by an adjusting mechanism 16a. By adjusting the adjusting mechanism 16a properly, supply position of the superconductive wire 14 to a coil storage groove of a coil container 6 is changed, thus enabling interference between the superconductive wire 14 being wound and a plasma vacuum container 3 which is a core body or a side wall 6a of a coil storage groove of the coil container 6 to be avoided.