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1. 发明专利

JP2013229531A Stationary induction apparatus 审中-公开
标题翻译：静电感应装置
公开(公告)号：JP2013229531A
公开(公告)日：2013-11-07
申请号：JP2012102005
申请日：2012-04-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAMOTO NAOYA , ONO YASUNORI , HAMADATE YOSHIO , KAWAMURA KENICHI , YAMAGISHI AKIRA , MIYAHARA HIDEYUKI
IPC分类号： H01F27/28 , H01F27/12 , H01F30/00
摘要： PROBLEM TO BE SOLVED: To provide a stationary induction apparatus that can easily improve variations in flow rate.SOLUTION: A stationary induction apparatus is arranged so that: a bent flow plate opens one of an inner diameter side vertical duct and an outer diameter side vertical duct; and an opening side in a bent flow region is alternately disposed on an inner diameter side and an outer diameter side. The stationary induction apparatus is configured so that coolant flows through a horizontal duct and a vertical duct from their upstream side to their downstream side. The vertical duct has a larger width on the upstream side than on the downstream side in the one bent flow region.
摘要翻译：要解决的问题：提供一种能够容易地改善流量变化的固定式感应装置。解决方案：固定式感应装置被布置成：弯曲流动板打开内径侧垂直导管和外径侧垂直管中的一个管; 并且弯曲流动区域中的开口侧交替地设置在内径侧和外径侧。固定式感应装置构造成使得冷却剂从其上游侧到其下游侧流过水平管道和垂直管道。垂直管道在一个弯曲流动区域中在上游侧具有比在下游侧更大的宽度。

2. 发明专利

JP2009177882A Distributed power supply system and method of controlling the same 有权
标题翻译：分布式电源系统及其控制方法
公开(公告)号：JP2009177882A
公开(公告)日：2009-08-06
申请号：JP2008011591
申请日：2008-01-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ONO YASUNORI , UCHIYAMA MICHIYUKI , KONDO SHINICHI , MIYATA HIROAKI , NAKAMURA TOMOHARU
IPC分类号： H02J3/38 , H02J3/16 , H02J3/50 , H02M7/48
CPC分类号： Y02E40/34
摘要： PROBLEM TO BE SOLVED: To prevent voltage fluctuation arising from the output fluctuation of a distributed power supply system's own, when the distributed power supply system is connected to a power supply system. SOLUTION: In the distributed power supply system operated by being connected to a power system 1 through a linkage line 2, a power voltage variation computing unit 220 computes variations (ΔP, ΔV) in effective electric power P and linkage point voltage V transmitted to the linkage line from measured values of a current sensor 11 and a voltage sensor 12. A system parameter for determining the ratio of the ineffective electric power to the effective electric power is obtained from the variations ΔP, ΔV. Namely, a system parameter computing unit 23 computes a shift quantity Δα between a present system parameter α and a system parameter αt reducing the voltage variation to minimum, and an electric power command value computing unit 240 generates an effective/ineffective electric power command value based on the system parameter having the shift quantity corrected. An electric power control unit 250 generates a control signal of an electric power converter corresponding to the effective/ineffective electric power command value to drive the electric power converter 6. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了防止分布式电源系统自身的输出波动引起的电压波动，当分布式供电系统连接到电源系统时。解决方案：在通过连接线2连接到电力系统1的分布式供电系统中，电力电压变化计算单元220计算有效电力P和联动点电压V（V）的变化（ΔP，ΔV）从电流传感器11和电压传感器12的测量值传输到连接线。从变化ΔP，ΔV获得用于确定无效电力与有效功率的比率的系统参数。也就是说，系统参数计算单元23计算当前系统参数α和将电压变化降至最小的系统参数αt之间的偏移量Δα，并且电力指令值计算单元240产生基于有效/无效的电力指令值关于校正了移位量的系统参数。电力控制单元250根据有效/无效的电力指令值生成与功率转换器6相对应的电力转换器的控制信号。驱动电力转换器6.（C）2009，JPO＆INPIT

3. 发明专利

JP2008289222A Power supply equipment, and control method thereof 审中-公开
标题翻译：电源设备及其控制方法
公开(公告)号：JP2008289222A
公开(公告)日：2008-11-27
申请号：JP2007129253
申请日：2007-05-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ONO YASUNORI , CHINO KOICHI , UCHIYAMA TOMOYUKI , TAKIZAWA TERUHIRO , NAKAMURA TOMOHARU
IPC分类号： H02J3/46 , H02J3/38 , H02P9/00 , H02P9/04
摘要： PROBLEM TO BE SOLVED: To provide power supply equipment which can stably supply power without the need for installing equipment for suppressing an output variation even in if wind power generation is employed, and to provide a control method thereof. SOLUTION: In order to generate power for satisfying the demand power of a power customer 30 by using a combined cycle generator set 50, there are implemented procedures for: setting a target power generation amount of a gas turbine set 51 and a target power generation amount of a steam turbine set 52; subtracting the target power generation amount of the steam turbine set 52 by an amount equivalent to a power generation amount of a wind turbine generator 10 when the wind turbine generator generates power; feeding a necessary amount of steam for generating the power of the subtracted target power generation amount of the steam turbine set 52 by the steam turbine set 52 to the steam turbine set 52 from an exhaust heat recovery boiler 63; and feeding remaining steam generated at the exhaust heat recovery boiler 63 to a desalination device 60 which desalinates sea water by utilizing steam heat. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在采用风力发电的情况下，也可以提供即使在风力发电的情况下也能够稳定地供电而不需要安装用于抑制输出变化的设备的供电设备，并提供其控制方法。解决方案：为了通过使用组合循环发电机组50来发电以满足电力用户30的需求功率，实现了以下过程：设置燃气轮机组51和目标的目标发电量汽轮机组52的发电量; 当风力涡轮发电机产生电力时，将蒸汽轮机组52的目标发电量减去与风力发电机10的发电量相当的量; 供给必要量的蒸汽，用于将蒸气涡轮机组52的蒸汽涡轮机组52的减去的目标发电量的功率从废热回收锅炉63产生到蒸汽涡轮机组52; 以及将在排气热回收锅炉63产生的剩余蒸汽供给到通过利用蒸汽热对海水进行脱盐的脱盐装置60。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2008157862A Method and device for locating ground fault point 有权
标题翻译：用于定位地面故障点的方法和装置
公开(公告)号：JP2008157862A
公开(公告)日：2008-07-10
申请号：JP2006349427
申请日：2006-12-26
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： TATEMI MASARU , ONO YASUNORI , TAKAHASHI REIJI , NAGANO MASAMI , HONGO YASUJI , HONDA HIDEKI
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To locate a ground fault point highly accurately even when an inhibition factor such as a power rate adjusting capacitor is installed on a distribution line.
SOLUTION: An accident detection device 4 is connected to measuring points M1, M2, M3 on the terminal of a distribution line 2, and a capacitor 11 is connected between each line and the ground, and a current flowing in the capacitor 11 is measured by a current sensor 12 (601). An operation device 14 detects a ground fault at a ground fault time based on a current waveform flowing in the capacitor 11, specifies a ground fault phase, and determines inclination of rising of a current (602). A center device 7 models beforehand the distribution line used as a monitoring object of the ground fault beforehand, and calculates and retains as a characteristic quantity curve by simulation, the relationship between a ground fault distance x and the characteristic quantity calculated from the inclination of the current flowing in the ground fault phase at the measuring point M (605, 606). The inclination of a capacitor current at the measuring points M1, M2, M3 transmitted to the center device 7 during the ground fault is substituted for a prescribed operation expression to calculate the characteristic quantity (603), and then substituted for the characteristic quantity curve to locate the ground fault distance x (604).
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使在配电线路上安装诸如功率调整电容器的抑制因素，也可以高精度地定位接地故障点。
解决方案：事故检测装置4连接到配电线路2的端子上的测量点M1，M2，M3，并且电容器11连接在每条线路和地之间，并且电流流过电容器11 由电流传感器12（601）测量。操作装置14基于在电容器11中流动的电流波形来检测接地故障时的接地故障，指定接地故障相位，并确定电流上升的倾向（602）。中心装置7预先模拟用作接地故障的监视对象的配线，并通过仿真计算并保留作为特征量曲线的接地故障距离x与从倾斜角度计算的特征量之间的关系在测量点M（605,606）处在接地故障阶段中流动的电流。在接地故障期间传输到中心装置7的测量点M1，M2，M3处的电容器电流的倾斜被代替规定的运算表达式来计算特征量（603），然后将特征量曲线代入找出接地故障距离x（604）。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2005300207A Method of locating short-circuit point on power distribution line 有权
标题翻译：在电力分配线上定位短路点的方法
公开(公告)号：JP2005300207A
公开(公告)日：2005-10-27
申请号：JP2004113050
申请日：2004-04-07
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： KATO TATSURO , TATEMI MASARU , ONO YASUNORI , SHIMAMURA HIDEHIKO , ENDO YOSHITO , WADA YUICHI , KASASHIMA TAKASHI
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To quickly cope with the short-circuit by specifying not only the interval of the short-circuit but also specifying the short-circuit point and to shorten the recovery hours after an accident happened.
SOLUTION: The short-circuit position is located from the line distance and the impedance Zo utilizing the potential difference of voltage to the earth between two measuring points positioning nearer to the electric power source than the short-circuit point. Furthermore, by considering for improving measuring precision, the voltage to the earth detected on the load side of the short-circuit point, the short-circuit position is calculated independently of the short-circuit resistance being an error factor. The method can specify not only the interval of the short-circuit but also specify the short circuit point, therefore quick response can be expected, so recovery hours after the accident can be shortened.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过指定短路的间隔，同时指定短路点，缩短事故发生后的恢复时间，快速应对短路。
解决方案：短路位置位于距离短路点更靠近电源的两个测量点之间，距离线距离和阻抗Zo利用电压对地的电位差。此外，通过考虑提高测量精度，在短路点的负载侧检测到的地电压，短路位置被独立于短路电阻计算为误差因子来计算。该方法不仅可以指定短路的间隔，还可以指定短路点，因此可以预期快速响应，因此可以缩短事故发生后的恢复时间。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005300206A Cable status monitoring device 审中-公开
标题翻译：电缆状态监测装置
公开(公告)号：JP2005300206A
公开(公告)日：2005-10-27
申请号：JP2004113044
申请日：2004-04-07
申请人： Hitachi Ltd , Tokyo Electric Power Co Inc:The , 東京電力株式会社 , 株式会社日立製作所
发明人： KATO TATSURO , TATEMI MASARU , ONO YASUNORI , SHIMAMURA HIDEHIKO , ENDO YOSHITO , WADA YUICHI , KASASHIMA TAKASHI
IPC分类号： G01R31/02
摘要： PROBLEM TO BE SOLVED: To monitor the cable status with a high confidence while suppressing the malfunction and incorrect determination in the cable status monitoring.
SOLUTION: The direction of the measured signal is determined by measuring the zero phase voltage and the zero phase current at each detection point for deterioration diagnosis of a cable under operation. For measuring the current pulse, a current sensor having ≥50 kHz frequency response characteristics is used and the sampling frequency for sufficiently detecting the oscillation wave form is made ≥50 kHz.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在抑制故障和电缆状态监视中的错误确定的同时，以高置信度监视电缆状态。
解决方案：测量信号的方向通过测量每个检测点处的零相电压和零相电流来确定，用于在运行中的电缆的劣化诊断。为了测量电流脉冲，使用具有≥50kHz频率响应特性的电流传感器，并且用于充分检测振荡波形的采样频率为≥50kHz。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005164306A Abnormality diagnostic method and ultrasonic diagnostic system for grease 有权
标题翻译：异常诊断方法和超声诊断系统
公开(公告)号：JP2005164306A
公开(公告)日：2005-06-23
申请号：JP2003400958
申请日：2003-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO TATSURO , ONO YASUNORI , FUJITA YASUNOBU
IPC分类号： G01N29/04 , G01N29/08 , G01N29/10
CPC分类号： G01N2291/0226 , G01N2291/044 , G01N2291/048 , G01N2291/2697
摘要： PROBLEM TO BE SOLVED: To diagnose an abnormal condition of a portion applied with grease for an operation device such as a circuit breaker not operated to be opened and closed for a long period.
SOLUTION: An ultrasonic signal is made incident into the portion applied with the grease, a transmitted or reflected ultrasonic signal is detected by an ultrasonic receiver, and an amplitude of a detected waveform of a transmitted or reflected wave and a duration of the detected waveform, or either of the amplitude of the detected waveform or the duration of the detected waveform is compared with an amplitude of a detected waveform and/or a duration of the detected waveform in a normal time, so as to diagnose the abnormal condition of the grease.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了诊断长时间不操作打开和关闭的断路器等操作装置的润滑脂部分的异常状况。解决方案：将超声波信号入射到施加有油脂的部分中，通过超声波接收器检测发射或反射的超声波信号，并且检测到发射或反射波的波形的振幅和持续时间将检测波形或检测波形的幅度或检测波形的持续时间中的任一个与正常时间中检测波形的振幅和/或检测波形的持续时间进行比较，以诊断波形的异常状况油脂。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2004274812A Method for supporting to maintain power quality in distribution system and system 审中-公开
公开(公告)号：JP2004274812A
公开(公告)日：2004-09-30
申请号：JP2003058448
申请日：2003-03-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIYAMA TOMOYUKI , ONO YASUNORI , WATANABE SHIGERU , SAITO KATSUAKI , KASHIWAKURA JUN , SHIMAMURA HIDEHIKO , TANIGUCHI YOICHIRO
IPC分类号： H02J3/38 , H02J3/46
摘要： PROBLEM TO BE SOLVED: To maintain the power quality in a distribution system in which many distributed power sources are linked. SOLUTION: A quality control center 1 delivers and receives the information to and from a distribution and transformer station control system 3 and each customer via communication lines 41, 42. The quality control center 1 monitors the system state of the customers' power source operation data and distribution system on line. As a result, if a voltage control value is deviated, the quality control center 1 selects the corresponding system control device and the customer's distributed power source, cooperates them, calculates their control values, and transmits the control values to the customer (for example, A) and the distribution and transformer station control system 3. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2004064960A Power supply system 有权
公开(公告)号：JP2004064960A
公开(公告)日：2004-02-26
申请号：JP2002223071
申请日：2002-07-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ONO YASUNORI , KONDO SHINICHI , UCHIYAMA TOMOYUKI , IIZUKA AKIO , FUJITA YASUNOBU , KAWAMURA NAOTERU
IPC分类号： H02J3/00
CPC分类号： Y02E40/72 , Y04S10/12
摘要： PROBLEM TO BE SOLVED: To sustain receiving power from a transmission/distribution system at a low level in day and night through seasons.
SOLUTION: When a load 40 of a consumer 1a is supplied with power generated from a generator 30 and power received from a transmission/distribution system, a supervisory controller 22 collects information concerning to power consumption of the load 40 at a specified time interval, generates demand data corresponding to the characteristics of the load 40 based on the information concerning to power consumption thus collected, predicts power demand at a specified time later based on the demand data thus generated, determines operation and stoppage of the generator 30 according to the prediction results, and alters control parameters for controlling the output of the generator 30 in accordance with the demand data when the generator 30 is operated.
COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003047156A Linkage protection system for distributed power supply facility 有权
标题翻译：用于分布式电源设施的连接保护系统
公开(公告)号：JP2003047156A
公开(公告)日：2003-02-14
申请号：JP2001227211
申请日：2001-07-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIYAMA TOMOYUKI , ONO YASUNORI , ARITA HIROSHI , HIGUCHI MIKISUKE
IPC分类号： H02H3/24 , H02H3/46 , H02J3/38 , H02J3/42
摘要： PROBLEM TO BE SOLVED: To smoothly execute calculation process. SOLUTION: A circuit breaker 12 for bus-bar communication is inserted into a bus bar 16 which connects between a power system 4 and a distributed power supply facility 5; a passing current I is detected by a current detector 13; a voltage on the power system side is detected by a voltage detector 14; a voltage on the distributed power supply facility side is detected by a voltage detector 15; the detected current and each detected voltage are fetched in a control device 11; in the control device 11, an momentary voltage drop is detected by a combination of overcurrent or a current variation rate and a voltage drop, and a single operation is detected according to a frequency variation rate of the voltage on the distributed power supply side; and the circuit breaker 12 is opened by outputting an interrupting instruction from the control device 11 to the circuit breaker 12 for the bus-bar connection, when the momentary voltage drop is detected or when the single operation is detected.
摘要翻译：要解决的问题：顺利执行计算过程。解决方案：用于母线通信的断路器12插入连接在电力系统4和分布式供电设备5之间的母线16中; 通过电流检测器13检测出通过电流I; 由电压检测器14检测电力系统侧的电压; 通过电压检测器15检测分布式供电设备侧的电压; 检测到的电流和每个检测的电压被提取在控制装置11中; 在控制装置11中，通过过电流或电流变化率与电压降的组合检测瞬时电压降，根据分布式电源侧的电压的频率变化率来检测单个动作; 并且当检测到瞬时电压降或检测到单次操作时，通过输出从控制装置11到汇流条连接的断路器12的中断指令来断开断路器12。

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