专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0843475A METHOD AND APPARATUS FOR DETECTING PARTIAL DISCHARGE IN INSULATING APPARATUS 失效
公开(公告)号：JPH0843475A
公开(公告)日：1996-02-16
申请号：JP18252194
申请日：1994-08-03
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： TANAKA HIDEO , OGI HIROMI , OKI ISAO , UCHIDA YOKO , MARUYAMA SHIRO , WAKABAYASHI SEIJI , SAKAKIBARA TAKAAKI , HIRATA KENJI
IPC分类号： G01R31/12 , G01R31/327 , G01R31/333
摘要： PURPOSE:To precisely detect a partial discharge with reference to an unknown partial-discharge waveform without being affected by a noise by a method wherein frequency-characteristic data on the partial-discharge waveform or the like is learned in advance in a neural network. CONSTITUTION:A gas is sealed in a metal container 1 for a gas-insulated apparatus, and a high-voltage conductor is supported by insulating spacers 2a, 2b. A simulation partial-discharge signal is injected into a buried electrode 4b via a signal--injection conductor 12 from a simulation partial-discharge generator 13. Then, regarding frequency-characteristic data on a partial-discharge radio wave obtained by a partial-discharge detector 7 and on a noise waveform measured in a normal operation, features are extracted respectively. The partial- discharge waveform and a noise pattern are learned in advance in a neural network for the detector 7. A discharge waveform which is generated in the apparatus is detected by the learned detector 7, and a plurality of pieces of frequency-characteristic data which are obtained from the detected waveform and whose peak-hold time is different are input to the neural network so as to be judged.

2. 发明专利

JPH08271573A METHOD FOR DETECTING PARTIAL DISCHARGE 失效
公开(公告)号：JPH08271573A
公开(公告)日：1996-10-18
申请号：JP6981695
申请日：1995-03-28
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OKI ISAO , HAIDA TAKESHI , WAKABAYASHI SEIJI , UCHIDA YOKO , SAKAKIBARA TAKAAKI , KURIHARA KEIICHI
IPC分类号： G01R31/12
摘要： PURPOSE: To extract features accurately even for an unknown partial discharge waveform based on a learnt data by detecting the partial discharge accurately regardless of the layout and environment of transforming station, connecting position of partial discharge detector and noise. CONSTITUTION: A high voltage conductor 3 is supported by insulation spacers 2a, 2b in a metal enclosure 1. Electrodes 4a, 4b embedded in the insulation spacer are connected through a signal injection line 12 with a simulated partial discharge signal generator 13. A simulated partial discharge signal injected from the simulated partial discharge signal generator 13 is detected by a partial discharge detector 7 connected with same embedded electrode. The partial discharge signal is discriminated from a steady noise by comparing one sweep waveform detected through the partial discharge detector 7 with a peak hold waveform based on the knowledge stored in a neural network.

3. 发明专利

JPH07181219A METHOD AND APPARATUS FOR DETECTING PARTIAL DISCHARGE 失效
公开(公告)号：JPH07181219A
公开(公告)日：1995-07-21
申请号：JP32779993
申请日：1993-12-24
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： TANAKA HIDEO , OGI HIROMI , OKI ISAO , SAITO MIGAKU , WAKABAYASHI SEIJI , SAKAKIBARA TAKAAKI , MARUYAMA SHIRO , NAGAOKA SATOSHI
IPC分类号： G01R31/12
摘要： PURPOSE:To enable the detection of a partial discharge accurately and at a higher speed without being affected by any noise by a method wherein a frequency data with limited noises is taught to a neural network, features are extracted in a frequency characteristic data thereof when a partial discharge is detected and the features are inputted to the neural network to judge the generation of at least the partial discharge. CONSTITUTION:When a frequency characteristic data of a partial discharge to be outputted from a partial discharge detector 9 is detected, the extraction of features thereof and standardization thereof are performed. A frequency area with limited noises is selected from the frequency characteristic data subjected to the extraction of features and standardization to be turned to a pattern and the resulting data is inputted into a neural network device 20. The device 20 judges the generation of any partial discharge based on the frequency characteristic data patternized and the frequency characteristic data learned. This enables the detection of a partial discharge generated in an insulation equipment accurately and at a higher speed without being affected by noises.

4. 发明专利

JPH07181218A METHOD AND APPARATUS FOR DETECTING PARTIAL DISCHARGE 失效
公开(公告)号：JPH07181218A
公开(公告)日：1995-07-21
申请号：JP32718993
申请日：1993-12-24
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： TANAKA HIDEO , OGI HIROMI , OKI ISAO , SAITO MIGAKU , WAKABAYASHI SEIJI , SAKAKIBARA TAKAAKI , MARUYAMA SHIRO , NAGAOKA SATOSHI
IPC分类号： G01R31/12
摘要： PURPOSE:To enable automatic detection of not only known partial discharge but also unknown partial discharge with high accuracy and high speed by using neural network from features of a frequency characteristic data and a phase characteristic data of a partial discharge waveform. CONSTITUTION:Partial discharge waveforms generated in a gas insulated device are detected 7 and 12 and features of a frequency characteristic data and features of a phase characteristic data are extracted 13 and 14 from the waveforms. The features of the characteristic data of a frequency and phase extracted are compared with the characteristic data of the frequency and the phase learned to judge 15 whether the waveform occurs at a higher speed and with high accuracy. A neural network 15 can judge the waveform of the know partial discharge and moreover, the unknown partial discharge at a higher speed and with high accuracy. This judgment enables the obtaining of the results of judgemet automatically without the generation of any mistake by an expert. This also allows not only partial judgment but also the analyzing of a factor for generating the partial discharge and the results thereof can be outputted 15 to display.

5. 发明专利

JP2000102159A METHOD AND DEVICE FOR DIAGNOSING ABNORMALITY IN GAS INSULATED ELECTRIC DEVICE 失效
公开(公告)号：JP2000102159A
公开(公告)日：2000-04-07
申请号：JP26636698
申请日：1998-09-21
申请人： CHUBU ELECTRIC POWER , TOSHIBA CORP
发明人： OGAWA AKISHIGE , IMAGAWA HIROSHI , MURASE HIROSHI , KOYAMA HIROSHI , WAKABAYASHI SEIJI
IPC分类号： H02B3/00 , G01R31/12 , H02G5/06 , H02H3/52
摘要： PROBLEM TO BE SOLVED: To inexpensively achieve reliable method and device for diagnosing abnormality that can efficiently and accurately distinguish partial discharge for indicating the sign of insulation abnormality being generated inside a gas insulation electric device from external noise forcibly entering from a transmission line or the like, and, furthermore, can estimate distance to a generation source when it is judged that the abnormality is caused by the partial discharge being generated inside the gas insulated electric device. SOLUTION: A high-frequency signal is taken in from a shield electrode 4 of a closed metal container 1, the high-frequency signal is separated for each of a plurality of frequency regions by each of signal separation devices 12a-12c, the level of each high-frequency signal for each frequency region is compared by an operation/display device 13, it is at least judged whether abnormality occurs in a gas insulated electric device or not, and at the same time distance from an observation point to an abnormality occurrence point is judged.

6. 发明专利

JPH06121435A GAS-INSULATED BUS 失效
公开(公告)号：JPH06121435A
公开(公告)日：1994-04-28
申请号：JP27001692
申请日：1992-10-08
申请人： TOSHIBA CORP
发明人： WAKABAYASHI SEIJI , KUNII YUJI
IPC分类号： H02G5/08
摘要： PURPOSE:To reduce a flange diameter of an expansion joint bus of a gas- insulated bus and widen the range of application. CONSTITUTION:Bellows flanges 12a and 12b are used as a connecting member to adjacent other buses 4a and 4b, and semicircular arc mounting plates 11a, 11b,... of a member other than the bellows flanges 12a and 12a and are mounted in the outer circumference end of the bellows flanges 12a and 12b as mounting members of spring cases 3a, 3b,.... Further, mounting means to the bellows flanges 12a and 12b of the mounting plates 11a, 11b,... is not particularly limited even if the means may endure a welding, a screwing and a spring load.

7. 发明专利

JPH10341519A PARTIAL DISCHARGING DETECTION ELECTRODE FOR GAS ISOLATION OPENING AND CLOSING DEVICE 失效
公开(公告)号：JPH10341519A
公开(公告)日：1998-12-22
申请号：JP14905797
申请日：1997-06-06
申请人： TOSHIBA CORP
发明人： WAKABAYASHI SEIJI , SAKAKIBARA TAKAAKI , MURASE HIROSHI , KOYAMA HIROSHI , IIDA TATSUO
IPC分类号： G01R31/12 , G01R31/00 , H01P1/16 , H02B13/02 , H02G5/06 , H02H5/00
摘要： PROBLEM TO BE SOLVED: To provide a gas isolation opening and closing device which is applicable to newly or existent gas isolation opening and closing device and has excellent detecting characteristics. SOLUTION: A gas isolation opening and closing device which includes a highvoltage conductor 1 inside a grounded metallic container 2 and seals insulating gas, whereas the diameter of a partial discharging detection electrode 4 for detecting electromagnetic wave generated when internal failure due to partial discharging inside grounded metallic container 2 occurs is approximate to that of the high-voltage conductor 1, and its ratio is 0.5

8. 发明专利

JPH07241009A GAS PRESSURE MONITOR OF GAS INSULATED APPARATUS 失效
公开(公告)号：JPH07241009A
公开(公告)日：1995-09-12
申请号：JP2955794
申请日：1994-02-28
申请人： TOSHIBA CORP
发明人： WAKABAYASHI SEIJI , SAITO MIGAKU , SAKAKIBARA TAKAAKI , HASEGAWA SHIN
IPC分类号： H02B13/025 , H01H33/56 , H01M8/04
摘要： PURPOSE:To decide the cause of the fluctuation of a gas pressure in each gas section of a gas insulated apparatus accurately and quickly by a method wherein, in order to monitor the gas pressure, it is converted into a pressure at a predetermined temperature in accordance with a gas temperature detection signal. CONSTITUTION:A gas pressure sensor 73 measures gas pressures in a plurality of the gas sections S1 and S2 of a gas insulated apparatus which are divided by insulating spacers 10 and outputs gas pressure signals. A gas temperature detection unit is provided in the gas pressure sensor 73 and measures the gas temperatures in the respective gas sections S1 and S2 and outputs gas temperature signals. In order to monitor the gas pressures in the respective sections S1 and S2 in accordance with the gas pressure signals from the gas pressure sensor 73, the gas pressures are converted into the pressures at a predetermined temperature in accordance with the gas temperature signals from the gas temperature detection unit. If the gas pressure fluctuates by a cause such as a temperature change, a leakage and an internal failure at that time, the fluctuation is transmitted to the gas pressure sensor 73. With this constitution, the cause of the fluctuation of the gas pressure can be decided acculately and quickly.

9. 发明专利

JPH06203677A INSULATING ROD 失效
公开(公告)号：JPH06203677A
公开(公告)日：1994-07-22
申请号：JP41193
申请日：1993-01-06
申请人： TOSHIBA CORP
发明人： WAKABAYASHI SEIJI , TAKEI MASAFUMI
IPC分类号： H01B17/00 , H01B17/56
摘要： PURPOSE:To heighten the dielectric constant of a filler-mixed resin by impregnat ing only the periphery of an inner electrode with the filler highly densely and provide an insulating rod with high cracking resistance and heat resistance and a moderated electric field of the inner electrode due to the coefficient of linear expansion near that of the inner electrode. CONSTITUTION:An insulating rod main body is made of resin 1 and inner electrodes 3A, 3B are buried to transmit the driving force while being insulated electrically. Only the resin 2A, 2B in the peripheries of the inner electrodes 3A, 3B are impregnated with a filler such as alumina which has higher dielectric constant than the resin 1 and nearer coefficient of linear expansion to that of the inner electrodes 3A, 3B than the resin 1.

10. 发明专利

JPH0345113A INSULATING SPACER 失效
公开(公告)号：JPH0345113A
公开(公告)日：1991-02-26
申请号：JP17710989
申请日：1989-07-11
申请人： TOSHIBA CORP
发明人： WAKABAYASHI SEIJI , TAKEI MASAFUMI
IPC分类号： H02B13/02 , H02G5/06
摘要： PURPOSE:To improve mechanical and electrical performance of insulating spacer and to detect coronal with high sensitivity by burrying a plurality of ground shields in the intermediate section of a metal flange and each high voltage conductor then connecting the shields through connecting members while furthermore connecting the ground shield with a resistor and a measuring terminal. CONSTITUTION:When voltage or corona is measured, voltage meter or corona meter is connected to a measuring terminal 21. Since ground shields 13A, 13B, 13C splitted into three parts are connected through connecting members 16, 17, the amount of member to be burried in an insulating spacer body 11 is reduced and concentration of stress in the ground shields 13A,13B, 13C is relieved when molding work is carried out. Consequently, mechanical and electrical reliability of the insulating spacer are improved and accuracy of corona detection is improved.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式