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    • 11. 发明专利
    • Control device and control method for wind turbine generator group
    • 风力发电机组控制装置及控制方法
    • JP2010084545A
    • 2010-04-15
    • JP2008252056
    • 2008-09-30
    • Hitachi Ltd株式会社日立製作所
    • KONDO SHINICHIONO YASUNORIUCHIYAMA MICHIYUKIICHINOSE MASAYAMATSUTAKE MITSUGIAIHARA TAKASHI
    • F03D7/04F03D1/02F03D9/00
    • H02P9/04F03D7/047F03D7/048F05B2260/821F05B2270/32F05B2270/321H02P2101/15Y02E10/723
    • PROBLEM TO BE SOLVED: To maintain fixed output by suppressing the fluctuation of electric power output to an electric power system from a windfarm. SOLUTION: The wind turbine generator group (windfarm) 100 is constituted by connecting a plurality of wind turbine generators of which the variable number of revolutions and variable pitches can be controlled, through an electric line with respect to an electric power system. The windfarm includes: anemometers respectively disposed to the wind turbine generators; individual control devices respectively disposed to the wind turbine generators and transmitting/receiving operational information including the wind direction and the wind power of each wind turbine generator through a telecommunication network; and a centralized control device receiving information from the special control devices through the telecommunication network to perform arithmetic processing. Operation of the windfarm is controlled according to an output command value from the centralized control device. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:通过抑制从风电场输出到电力系统的电力的波动来保持固定输出。 解决方案:风力发电机组(风电场)100通过相对于电力系统的电力线路连接可以控制可变转数和可变间距的多个风力涡轮发电机构成。 风电场包括:分别布置在风力发电机上的风速计; 各个控制装置分别设置在风力涡轮发电机上,通过电信网络发送/接收包括风力发电机的风向和风力的运行信息; 以及通过电信网络从特殊控制装置接收信息以进行算术处理的集中控制装置。 根据集中控制装置的输出指令值控制风电场的运行。 版权所有(C)2010,JPO&INPIT
    • 12. 发明专利
    • Solar energy generation system
    • 太阳能发电系统
    • JP2009159754A
    • 2009-07-16
    • JP2007336326
    • 2007-12-27
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA MICHIYUKIONO YASUNORIKONDO SHINICHIMIYATA HIROAKIITO TOMOMICHIOHARA SHINYA
    • H02J3/16G05F1/67H02J3/38H02M7/48
    • Y02E10/563Y02E40/34
    • PROBLEM TO BE SOLVED: To stably restrain a voltage fluctuation generated due to the output fluctuation of a solar energy generation system, while preventing an interference by controlling the reactive power of a power converter. SOLUTION: A power compensation computing element arithmetically operating the electrical energy for restraining the voltage fluctuation, by using the synthetic output current of a plurality of solar energy generators, the output voltages and output currents of each power converter and a voltage at a linkage point with a power system is fitted. A means for estimating the voltage at the linkage point with the power system is fitted to the power compensation computing element. A reactive-power command value for minimizing the voltage fluctuation is computed, by using a control parameter computed, on the basis of the product of the fluctuation sections of the effective powers of the synthetic power generation outputs of the solar energy generators and the fluctuation section of the voltage at the linkage point and the effective powers of the solar energy generators. Dead bands are set at the detecting values of the fluctuation sections. Fluctuation command of the effective power is transmitted to a power controller, when the state in which the fluctuation sections of the synthetic power generation outputs of the solar energy generators become a threshold or less continues for a fixed time or longer, and a motion command is stopped, when the variation of the computed control parameter becomes the threshold or smaller. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了稳定地抑制由于太阳能发电系统的输出波动而产生的电压波动,同时通过控制功率转换器的无功功率来防止干扰。 解决方案:一种功率补偿计算元件,通过使用多个太阳能发电机的合成输出电流,计算每个功率转换器的输出电压和输出电流以及电压波动的电压,以算术运算电能来抑制电压波动 与电力系统的联动点被安装。 用于估计与电力系统的联动点处的电压的装置被安装到功率补偿计算元件。 通过使用计算出的控制参数,基于太阳能发电机的合成发电输出的有效功率的波动部分与波动部分的乘积的乘积来计算用于使电压波动最小的无功功率指令值 的连接点的电压和太阳能发电机的有效功率。 死波段设定在波动部分的检测值。 有效功率的波动指令被发送到功率控制器,当太阳能发电机的合成发电输出的波动部分变为阈值或更小的状态持续一定时间或更长时间,运动指令为 当计算出的控制参数的变化变为阈值或更小时停止。 版权所有(C)2009,JPO&INPIT
    • 13. 发明专利
    • Power transmission device
    • 电力传输装置
    • JP2008208919A
    • 2008-09-11
    • JP2007046393
    • 2007-02-27
    • Hitachi Ltd株式会社日立製作所
    • KONDO SHINICHIKIKUCHI YASUHIRO
    • F16D3/26F16D1/033
    • PROBLEM TO BE SOLVED: To minimize an increase in the size of a flange with an increase in the diameter of a P.C.D. of a bolt insertion hole having a tool contact face in the outer periphery region which a bolt fastening tool can contact. SOLUTION: A flange portion 20 of a connecting member 15 connected to the output shaft of a vehicle transmission is fastened to the flange 20 of a first yoke 11 which a propeller shaft 1 has at one end, with four bolts 9. The flange is formed almost rectangular, and bolt insertion holes 22 passing therethrough are formed adjacent to the outer edges of four corners. In the outer periphery region of each bolt insertion hole, there are counter-sunk a bolt seating face 23 on which a head portion 9a of each bolt is seated, and a tool contact face 24 which the end face of the bolt fastening tool contacts, as a series of flat faces. The four corners of the flange including the tool contact faces are cut to form circular corner portions 21 while securing the bolt seating faces. Thus, each bolt insertion hole can be arranged more adjacent to the outer edge of the flange. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了最小化凸缘尺寸的增加,其中P.C.D的直径增加。 在螺栓紧固工具能够接触的外周区域中具有工具接触面的螺栓插入孔。 < P>解决方案:连接到车辆变速器的输出轴的连接构件15的凸缘部分20被固定到传动轴1的一端具有四个螺栓9的第一磁轭11的凸缘20上。 凸缘形成为几乎矩形,并且穿过其中的螺栓插入孔22邻近四个角的外边缘形成。 在每个螺栓插入孔的外周区域中,防止每个螺栓的头部9a位于其上的螺栓座面23和螺栓紧固工具的端面接触的工具接触面24, 作为一系列平面。 包括工具接触面的凸缘的四个角部被切割以形成圆形角部21,同时固定螺栓座面。 因此,每个螺栓插入孔可以布置成更靠近凸缘的外边缘。 版权所有(C)2008,JPO&INPIT
    • 14. 发明专利
    • Load monitoring control method/system
    • 负载监控控制方法/系统
    • JP2007159341A
    • 2007-06-21
    • JP2005354638
    • 2005-12-08
    • Hitachi Ltd株式会社日立製作所
    • KONDO SHINICHIONO YASUNORIUCHIYAMA TOMOYUKITATEMI MASARUWATANABE AKIHIKO
    • H02J3/00H02J13/00
    • PROBLEM TO BE SOLVED: To suppress peak power at the time of starting a plurality of load units with a simple structure. SOLUTION: Load units L11 to L32 are connected to a power line through manual starting switches S11 to S32. Remote switches R11 to R32 are connected between a load and the manual starting switches. When the manual starting switch S11 is turned on for starting the load unit L11, a manual switch operation signal 120 is sent to a monitoring controller 110. When the monitor controller 110 receives the operation signal from the manual switch S11, it monitors signals of the other manual switches S12 to S32 for prescribed waiting time. When turn-on of the other load, L31 for example, is detected within waiting time, priority and starting time of the load units L11 and L31 are read from a data base 160. Starting delay time corresponding to starting time is operated in order. The switch R11 is turned on and the load unit L11 is started after waiting time elapses, and the load unit L31 is started after starting delay time. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:以简单的结构抑制启动多个负载单元时的峰值功率。 解决方案:通过手动启动开关S11〜S32将负载单元L11〜L32与电力线连接。 远程开关R11至R32连接在负载和手动启动开关之间。 当手动启动开关S11接通以启动负载单元L11时,手动开关操作信号120被发送到监视控制器110.当监视器控制器110接收到来自手动开关S11的操作信号时,它监视信号 其他手动开关S12〜S32规定等待时间。 当在等待时间内检测到其他负载的接通时,例如,在等待时间内检测到L31,从数据库160读取加载单元L11和L31的优先级和开始时间。对应于起始时间的启动延迟时间按顺序操作。 开关R11导通,等待时间过后负载单元L11启动,负载单元L31在启动延迟时间后启动。 版权所有(C)2007,JPO&INPIT
    • 18. 发明专利
    • Control system of new energy power plant group and its control method
    • 新能源电厂集团控制系统及其控制方法
    • JP2014057518A
    • 2014-03-27
    • JP2013267049
    • 2013-12-25
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA NORIYUKIKONDO SHINICHIWATANABE MASAHIROMATSUTAKE MITSUGU
    • H02J3/00
    • H02J3/1885H02J3/386Y02E10/763Y02E40/32
    • PROBLEM TO BE SOLVED: To control power generation output from a new energy power plant group and voltage at a system interconnection point to prescribed values regardless of a sudden change in weather conditions and an impact from operation stop and the like at the time of system disturbance.SOLUTION: A control system of a new energy power plant group is connected, via communication lines, with a group of a plurality of new energy power plants that are connected with a power system and their power generation output varies according to weather conditions, an output adjustment device capable of controlling power generation output, a power supply command office for controlling demand-and-supply balance of the power system, and a transformer substation for adjusting voltage of the power system and reactive power, and adjusts power generation output of the new energy power plant group and the output adjustment device. The control system comprises reactive power command calculation means 8123, and the reactive power command calculation means calculates a reactive power command by use of a voltage management target value transmitted by the transformer substation, voltage measurement information at the plurality of new energy power plants, and voltage adjustment sensitivity 8122 by sequentially calculated reactive power at a system interconnection point of the plurality of new energy power plants.
    • 要解决的问题:无论天气条件的突然变化以及系统干扰时的运行停止等的影响,将新能源发电厂组的发电输出和系统互连点的电压控制在规定值 解决方案:新能源电厂组的控制系统通过通信线与一组与电力系统连接的新能源发电厂连接,其发电输出根据天气情况而变化, 能够控制发电输出的输出调节装置,用于控制电力系统的供电平衡的电力指令部,以及用于调整电力系统的电压和无功功率的变电站,并且调整发电输出的发电输出 新能源发电厂组和输出调整装置。 控制系统包括无功功率指令计算装置8123,无功功率指令计算装置利用变电站发送的电压管理目标值,多个新能源发电厂的电压测量信息,以及 电压调整灵敏度8122,通过在多个新能源发电厂的系统互连点处的顺序计算的无功功率。
    • 19. 发明专利
    • Stand-alone power supply system
    • 独立电源系统
    • JP2013176234A
    • 2013-09-05
    • JP2012039526
    • 2012-02-27
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA NORIYUKIKONDO SHINICHINAGAYAMA YUICHI
    • H02J3/46H02J3/32H02J3/38H02J7/35
    • H02J3/382H02J3/32H02J3/383H02J3/386H02J7/34Y02A30/12Y02E10/563Y02E10/566Y02E10/763Y02E70/30
    • PROBLEM TO BE SOLVED: To provide a stand-alone power supply system capable of reducing an installation cost.SOLUTION: A stand-alone power supply system calculates demand prediction data for a load device and power generation output prediction data for a natural energy power generation device using weather prediction data. If a storage battery is anticipated to be charged beyond the maximum charge power of the storage battery from the demand prediction data and the power generation output prediction data, the stand-alone power supply system suppresses power generation output from the natural energy power generation device. If a storage battery is anticipated to be discharged beyond the maximum discharge power of the storage battery from the demand prediction data and the power generation output prediction data, the stand-alone power supply system suppresses power consumption of a load for adjustment.
    • 要解决的问题:提供能够降低安装成本的独立电源系统。解决方案:独立电源系统计算负载装置的需求预测数据和用于自然能发电的发电输出预测数据 设备使用天气预报数据。 如果预期蓄电池从需求预测数据和发电输出预测数据中超过蓄电池的最大充电功率充电,则独立电源系统抑制从天然能发电装置的发电输出。 如果预期蓄电池从需求预测数据和发电输出预测数据中排出超过蓄电池的最大放电功率,则独立供电系统抑制用于调整的负载的功耗。
    • 20. 发明专利
    • Photovoltaic power generating system
    • 光伏发电系统
    • JP2011234620A
    • 2011-11-17
    • JP2011127902
    • 2011-06-08
    • Hitachi Ltd株式会社日立製作所
    • UCHIYAMA NORIYUKIONO YASUNORIKONDO SHINICHIMIYATA HIROAKIITO TOMOMICHIOHARA SHINYA
    • H02J3/16G05F1/67H01L31/042H02J3/38
    • Y02E10/563Y02E40/34
    • PROBLEM TO BE SOLVED: To provide a photovoltaic power generating system that stably suppresses voltage fluctuations caused by output fluctuations of the system by performing reactive power control of power converter device of each photovoltaic power generating device.SOLUTION: A photovoltaic power generating system includes a power compensation amount calculator 113 that calculates a power amount Q for suppressing a voltage fluctuation by using a sum output current I of plural photovoltaic generating devices 11-1i, an output voltage V1 and an output current I1 of each power converting device 112, and a voltage at a combination point 3 with a power system. The power compensation amount calculator 113 includes means that estimates a voltage at the combination point with the power system.
    • 要解决的问题:提供一种光伏发电系统,通过进行各光伏发电装置的电力变换装置的无功功率控制,可以稳定地抑制由系统的输出波动引起的电压波动。 解决方案:光伏发电系统包括功率补偿量计算器113,其通过使用多个光伏发电装置11-1i的和输出电流I,输出电压V1和输出电压V1来计算用于抑制电压波动的功率量Q 每个电力转换装置112的输出电流I1,以及与电力系统的组合点3的电压。 功率补偿量计算器113包括估计与电力系统的组合点的电压的装置。 版权所有(C)2012,JPO&INPIT