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1. 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.

2. 发明专利

JPH08271572A GROUND FAULT DETECTOR 失效
公开(公告)号：JPH08271572A
公开(公告)日：1996-10-18
申请号：JP7489895
申请日：1995-03-31
申请人： TOSHIBA CORP
发明人： NODA HIDEKI , YOKOTA TAKASHI , KURIHARA KEIICHI , TERAI KIYOHISA , TAKAHASHI MASAO
IPC分类号： G01R31/08
摘要： PURPOSE: To obtain a ground fault detector which can locate the ground fault reliably and can restart transmission of power quickly. CONSTITUTION: Buses 1, 2 are connected through an insulation flange 3, a main bus disconnector 4 and a unit bus duct 5. All compositional parts are housed in grounded tanks coupled mutually through insulation spacers 6 thus sectioning a gas insulated switchgear into a plurality of blocks. Each insulation spacer 6 has a flange part exposed from the exterior of the grounded tank which is grounded at one point through a ground wire 7. An in-phase shunt bar 8 is fixed to the flange part of each insulation spacer 6. A current sensor 9 is mounted on the grounded tank on the inside of each in-phase shunt bar 8. The current sensor 9 is connected with a comparator/detector 10 through sensor output signal processing sections 11(I)-(III).

3. 发明专利

JPH03222609A GAS INSULATED CONTACTOR FOR DIRECT CONNECTION TO GAS INSULATED TRANSFORMER 失效
公开(公告)号：JPH03222609A
公开(公告)日：1991-10-01
申请号：JP1362190
申请日：1990-01-25
申请人： TOSHIBA CORP
发明人： KURIHARA KEIICHI , OKUWA HIROSHI
IPC分类号： H02B13/02
摘要： PURPOSE:To reduce an installation space for gas insulated contactors forming the primary and secondary wirings of gas insulated transformers by directly connecting the gas insulated contactors to the gas insulated transformers and positioning the gas insulated contactors above the gas insulated transformers. CONSTITUTION:Transformer primary wirings 3 are routed along the upper side of each gas insulated transformer 5, and one end of which is connected to the gas insulated transformer 5 through a connecting bus bar 4 and the opposite end of which is connected to a primary bus bar 9. And the transformer secondary wirings 14 are routed along the lower side of each gas insulated transformer 5, and one end of which is connected to the gas insulated trans former 5 through a connecting bus bar 15 and the opposite end of which is connected to a secondary bus bar 18. Since the primary wiring 3 and the secon dary wiring 14 of the transformer for each phase are routed along the upper and lower sides respectively of the gas insulated transformer for each phase as mentioned above, an installation space for the gas insulated transformer and contactors can greatly be reduced.

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