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1. 发明专利

JP2006042472A Grounding switch 有权
标题翻译：接地开关
公开(公告)号：JP2006042472A
公开(公告)日：2006-02-09
申请号：JP2004217326
申请日：2004-07-26
申请人： Hitachi Ltd , Japan Ae Power Systems Corp , 株式会社日本Aeパワーシステムズ , 株式会社日立製作所
发明人： YAGIHASHI YOSHITOYO , ROKUNOHE TOSHIAKI , ENDO FUMIMASA , OMORI SHOJI , AOYANAGI KENJI
IPC分类号： H02B13/075 , H01H33/59 , H02B1/16 , H02B13/055
摘要： PROBLEM TO BE SOLVED: To provide a grounding switch that is improved in withstand voltage performance, is simple in structure and can satisfy induction current switching responsibility. SOLUTION: When grounding a main circuit conductor 1 by closing the grounding switch 21, a switching part 12 in gas is passage-closed after pole-closing a vacuum switching part 6 first, and when opening the grounding switch 21, the switching part 12 in the gas is passage-opened after pole-opening the vacuum switching part 6 and cutting off an induction current by using the vacuum switching part. Since insulation is held between a movable contactor 3 and a fixed contactor 2 of the switching part 12 in the gas, a high voltage is not applied to the vacuum switching part 6 even if a high voltage is applied to the main circuit conductor 1 in this state. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供耐压性能提高的接地开关，结构简单，可以满足感应电流切换责任。解决方案：当通过闭合接地开关21使主电路导体1接地时，首先关闭真空开关部6后，气体中的开关部12通过闭路，当打开接地开关21时，切换气体中的第12部分在真空切换部分6打开之后通过开口，并通过使用真空切换部分切断感应电流。由于在气体中的开关部12的可动接触器3和固定接触器2之间保持绝缘，因此即使在该主电路导体1中施加高电压也不向真空开关部6施加高电压州。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005233837A Measurement method for partial discharge, and apparatus thereof 有权
标题翻译：部分放电的测量方法及其装置
公开(公告)号：JP2005233837A
公开(公告)日：2005-09-02
申请号：JP2004044926
申请日：2004-02-20
申请人： Hitachi Ltd , Japan Ae Power Systems Corp , 株式会社日本Aeパワーシステムズ , 株式会社日立製作所
发明人： MORIYAMA TOMOHIRO , KATO TATSURO , ROKUNOHE TOSHIAKI , ENDO FUMIMASA , SHINOHARA RYOICHI
IPC分类号： G01R31/12
CPC分类号： G01R31/1272 , G01R31/1254
摘要： PROBLEM TO BE SOLVED: To measure partial discharge after correcting deviation in phase when there is a deviation in a system in which partial discharge is to be measured.
SOLUTION: Prior to measuring partial discharge from a voltage detected by an antenna 28, the voltage detected by the antenna 28 is input to a spectrum analyzer 46 via a signal conversion circuit 38. Through a phase domain analysis by the spectrum analyzer 46, the phase difference between the operating voltage and drive power source of the spectrum analyzer 46 is determined. On the basis of the phase difference and deviation in the voltage phase accompanied by an input impedance of the signal conversion circuit 38, the time axis displayed on a screen of the spectrum analyzer 46 is corrected. After the correction, the voltage, detected by the antenna 28, is input directly to the spectrum analyzer 46. Through the frequency domain analysis by the spectrum analyzer 46, the frequency component at the zero point of the operation voltage is measured, and a partial discharge pattern in synchronization with the operation voltage is then measured.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：当在要测量局部放电的系统中存在偏差时，用于在校正相位偏差之后测量局部放电。解决方案：在从由天线28检测的电压测量局部放电之前，由天线28检测的电压经由信号转换电路38输入到频谱分析仪46.通过频谱分析仪46的相域分析确定频谱分析仪46的工作电压和驱动电源之间的相位差。根据伴随信号转换电路38的输入阻抗的电压相位的相位差和偏差，校正频谱分析仪46的画面上显示的时间轴。在校正之后，由天线28检测的电压直接输入到频谱分析仪46.通过频谱分析仪46的频域分析，测量操作电压零点的频率分量，然后测量与操作电压同步的放电模式。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004236455A Gas-insulated switchgear 有权
公开(公告)号：JP2004236455A
公开(公告)日：2004-08-19
申请号：JP2003023411
申请日：2003-01-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIUMI TOMOAKI , ENDO FUMIMASA , YAGIHASHI YOSHITOYO , ROKUNOHE TOSHIAKI , ITO SHUNJI , OMORI SHOJI
IPC分类号： H02B13/055 , H02B13/02
摘要： PROBLEM TO BE SOLVED: To provide a gas-insulated switchgear which materializes downsizing as well as suppresses the use of chlorofluorocarbon such as SF6, c-C4F8, CF3SF5, C3F8, CF3OSF3, etc. SOLUTION: This gas-insulated switchgear is provided with the first bellows 21 which lowers the gas pressure within a ground sealed container 11, where a vacuum breaker 20 is arranged, than the insulating gas pressure within the ground sealed container where a disconnector is arranged and allows the opening and closing action of a movable electrode 15 while keeping the vacuum within the vacuum container 13 in the vacuum breaker 20. This first bellows makes vacuum act upon either face of its inside or outside, and a middle chamber 24a is made of either other face, and this middle chamber 24a is put at middle pressure between the gas pressure of insulating gas charged in the ground sealed container having housed the vacuum breaker 20 and the vacuum in the vacuum container 13 so as to lighten the burden by the pressure difference between the inside and the outside of the first bellows 21. COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004192441A Equipment diagnostic system 审中-公开
公开(公告)号：JP2004192441A
公开(公告)日：2004-07-08
申请号：JP2002361007
申请日：2002-12-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ROKUNOHE TOSHIAKI , UCHIUMI TOMOAKI , ENDO FUMIMASA , KOJIMA KEIMEI , KATO TATSURO , KIDA JUNZO , KAWAMURA NAOTERU
IPC分类号： G05B23/02
摘要： PROBLEM TO BE SOLVED: To provide an equipment diagnostic system rationally diagnosing a diagnosis object. SOLUTION: When a dead time of an operating device exceeds a prescribed time, a necessity/non-necessity determination part 4 outputs an opening/closing command to a control circuit 20 based on the outputs of respective types of sensors and the output of a timer 42 incorporated in a circuit breaker 52, the control circuit 20 outputs a command to operate the circuit breaker to the operating device 26 and the circuit breaker 52 is forcedly opened/closed by operating the operating device 26. A diagnostic part 48 detects the operating frequency, the stroke characteristics, the temperature, circuit breaker turned on/off information and the control voltage as the situations at that time and diagnoses the soundness of the circuit breaker 52 based on the detection results. COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2003189429A SWITCHGEAR 审中-公开
公开(公告)号：JP2003189429A
公开(公告)日：2003-07-04
申请号：JP2001384399
申请日：2001-12-18
申请人： HITACHI LTD
发明人： ROKUNOHE TOSHIAKI , ENDO FUMIMASA , TAKAHASHI KAZUHIKO
IPC分类号： H02B13/02
摘要： PROBLEM TO BE SOLVED: To provide a switchgear for ensuring reliability of insulation and reconciling cost performance and compartness. SOLUTION: Voltage measurement instruments (transformers) 14a-14c having windings or voltage dividing resistors are connected to main buses 4a-4c disconnected by bus disconnectors 3a-3c, 5a-5c, 9a-9c. An accuracy grade of other voltage measurement instruments 18, 19a-19c, 21 is lower than that of the voltage measurement instruments 14a-14c. COPYRIGHT: (C)2003,JPO

6. 发明专利

JP2003043095A Remote monitoring and diagnosing system for electric apparatus 有权
标题翻译：电气设备远程监控与诊断系统
公开(公告)号：JP2003043095A
公开(公告)日：2003-02-13
申请号：JP2001229380
申请日：2001-07-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIUMI TOMOAKI , ENDO FUMIMASA , KATO TATSURO
IPC分类号： G01R31/02 , G01R31/12 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To provide a remote monitoring and diagnosing system capable of effectively and accurately monitoring and diagnosing many electric apparatus scattered in respective places at a low cost.
SOLUTION: The remote monitoring diagnosing system comprises apparatus monitoring means 22 for acquiring condition monitoring data of electric apparatus 11-13 installed at local sites, local systems 21 having local diagnosing means 23 for preliminarily diagnosing about the condition monitoring data, communication lines 40 for transmitting the diagnosis results obtained by the diagnosing means 23 and the condition monitoring data, and a host system 51 for taking in the condition monitoring data and the diagnosis results over the communication lines 40 to diagnose in detail the electric apparatus 11-13. The local system 21 is provided with a local monitoring diagnosis setting means 30 for setting at least one of monitoring items, monitoring interval, save interval, transmission interval and threshold of the condition monitoring data.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供能够以低成本有效且准确地监测和诊断分散在各个地方的许多电器的远程监测和诊断系统。解决方案：远程监控诊断系统包括：设备监控装置22，用于获取安装在本地的电气设备11-13的状态监视数据;具有用于初步诊断状态监视数据的本地诊断装置23的本地系统21;用于发送的通信线路40 由诊断装置23获得的诊断结果和状态监视数据，以及用于通过通信线40获取状态监视数据和诊断结果的主机系统51，以详细诊断电气设备11-13。本地系统21设置有本地监视诊断设置装置30，用于设置状态监视数据的监视项目，监视间隔，保存间隔，传输间隔和阈值中的至少一个。

7. 发明专利

JP2000028668A METHOD AND DEVICE FOR DETECTING ABNORMALITY IN SURGE SUPPRESSING ELEMENT 失效
公开(公告)号：JP2000028668A
公开(公告)日：2000-01-28
申请号：JP19614498
申请日：1998-07-10
申请人： HITACHI LTD
发明人： SHINDO KATSUJI , OZAWA ATSUSHI , ENDO FUMIMASA , KOBAYASHI MASATOMO
IPC分类号： G01R31/00 , G01R31/12 , H01C7/12 , H02B13/02 , H02B13/065 , H02H7/00
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting the abnormality of a surge suppressing element for accurately detecting the abnormality of a cylindrical element made of zinc oxide which is incorporated in an insulation washer with a simple detection means. SOLUTION: A method for detecting the abnormality of a surge suppression element for detecting the abnormality of a cylindrical element made of zinc oxide, where an outer periphery is covered with an insulation cylindrical body, is used for the insulation washer of a clamping body for clamping the area between facing flanges 9F and 10F of metal containers 9 and 10, where a high- pressure gas is sealed in an electrically insulated state. A step-shaped or pulse- shape detection voltage is applied between the flanges 9F and 10F, the time constant of the attenuation voltage of a specific resonance frequency obtained between the flanges 9F and 10F is obtained, and the obtained time constant value is compared with a reference time constant value thus detecting the abnormality of the cylindrical element made of zinc oxide.

8. 发明专利

JPH11144573A INSULATING EQUIPMENT 失效
公开(公告)号：JPH11144573A
公开(公告)日：1999-05-28
申请号：JP30680197
申请日：1997-11-10
申请人： HITACHI LTD
发明人： ROKUNOHE TOSHIAKI , ENDO FUMIMASA , YAMAGIWA TOKIO
IPC分类号： H02B13/055 , H01B9/06 , H01H33/53
摘要： PROBLEM TO BE SOLVED: To prevent a foreign matter containing an insulating liquid from being sprung out to a gas space again by partial discharge suppression and the surface tension of the liquid by including an insulating gas and an insulating liquid in combination in a grounded tank. SOLUTION: This insulating equipment is formed of a conductor 1 and a grounded tank 2, and an insulating liquid 6 is sealed in the single phase bus line of GIS or GIL in which the conductor 1 is insulated from the grounded tank 2 by an insulating gas. Even if a conductive foreign matter 7 is not present in the insulating liquid, the floating foreign matter is collected to the bottom surface of the grounded tank since the grounded tank is cylindrical, and put in the insulating liquid. When the foreign matter is put in the insulating liquid, the foreign matter is never floated by the effect of surface tension and partial discharge suppression effect. Examples of the sealed insulating gas include SF6 gas, nitrogen, carbon dioxide and the like, and examples of the insulating liquid include perfluorocarbon, insulating oil, pure water and the like.

9. 发明专利

JPH1116516A CATHODE-RAY TUBE AND ITS MANUFACTURE 失效
公开(公告)号：JPH1116516A
公开(公告)日：1999-01-22
申请号：JP16561497
申请日：1997-06-23
申请人： HITACHI LTD
发明人： KOBAYASHI KENZO , KOBAYASHI KAZUO , ENDO FUMIMASA , SHIRAI MASAJI , UCHIDA TAKESHI , KUROKUZUHARA MAMORU
IPC分类号： H01J9/44 , H01J29/76
摘要： PROBLEM TO BE SOLVED: To shorten the time for aging process in the manufacture cathode-ray tube by mounting an electron gun electrode or a deflection coil for irradiating a neck glass inner wall on a neck part, in addition to a defection coil for emitting electron beams to a phosphor screen to emit light from the phosphor screen. SOLUTION: In aging process, the electron emitted from a cathode within an electron gun 2 is collided to an electrode, and a secondary electron generated thereby is partially emitted to a neck glass inner wall, whereby the neck glass is electrically charged. Therefore, this cathode-ray tube is provided with a deflection coil 11 for emitting electron beams to the electrode, generating a secondary electron from the electrode, and emitting the electron to the inner wall of a neck glass 3, in addition to a deflection yoke 8 for emitting a light having a prescribed pattern from a phosphor screen. Thus, the charge quantity per unit time on the inner wall of the neck glass 3 can be increased to shorten the time for stabilizing the potential of the neck glass 3.

10. 发明专利

JPH04204065A METHOD FOR DIAGNOSING PARTIAL DISCHARGE OF GAS INSULATED MACHINERY 失效
公开(公告)号：JPH04204065A
公开(公告)日：1992-07-24
申请号：JP32902490
申请日：1990-11-30
申请人： HITACHI LTD
发明人： IWAASA SHUZO , ISHIKAWA TOSHIO , UCHIUMI TOMOAKI , ENDO FUMIMASA
IPC分类号： G01R31/12 , H02B13/065 , H02G5/06
摘要： PURPOSE:To clearly diagnose the adhesion position of foreign matter and to prevent the insulating trouble of a spacer by providing a partial discharge detector in gas insulated machinery and measuring the spectrum of the detection signal of the detector. CONSTITUTION:With respect to the adhesion state of the conductive foreign matters to a spacer, the conductive foreign matter 80 bonded to the creeping surface of the spacer on the high voltage side thereof, the foreign matter 90 bonded to the creeping surface of the central part thereof and the foreign matter 100 bonded to the creeping surface of the spacer on the earth side thereof are considered. The signal due to the generation of the partial discharge detected by a built-in type partial discharge detector 50 because of those adherends is taken in a spectrum analyser 60 to be subjected to frequency analysis and the analyzing result is sent to a computer 70. The computer 70 counts the number of spectrum intensities below the reference band width of partial discharge frequency spectrum intensity and the number of spectrum intensities equal to or more than reference band width on a reference level within a noticeable frequency region and diagnoses the adhesion position of foreign matter by the comparison of the numbers.

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