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61. 发明专利

JPS5795128A GROUND-FAULT PROTECTING SYSTEM FOR MULTITERMINAL SYSTEM 失效
公开(公告)号：JPS5795128A
公开(公告)日：1982-06-12
申请号：JP16806480
申请日：1980-12-01
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： MATSUZAWA KUNIO , YOSHIDA AKIRA , SASAKI HIROSHI , ONO TOSHIO , IWATANI FUMIO
IPC分类号： H02H3/26 , H02H3/28

62. 发明专利

JPS56115139A SYSTEM STABILIZING METHOD 失效
公开(公告)号：JPS56115139A
公开(公告)日：1981-09-10
申请号：JP1803880
申请日：1980-02-16
申请人： TOKYO ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： MATSUZAWA KUNIO , KASAHARA TOSHIO , NISHIDA SHIYOUGO , TAKEDA SHIYOUICHI
IPC分类号： H02J3/24

63. 发明专利

JPS56115138A STEPPOUT PREDICTING METHOD 失效
公开(公告)号：JPS56115138A
公开(公告)日：1981-09-10
申请号：JP1803780
申请日：1980-02-16
申请人： TOKYO ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： MATSUZAWA KUNIO , KASAHARA TOSHIO , NISHIDA SHIYOUGO , TAKEDA SHIYOUICHI
IPC分类号： H02J3/24

64. 发明专利

JPS55106028A COMMONLY INSTALLED MULTIICHANNEL GROUNDDFAULT DIRECTION PROTECTING RELAY 失效
公开(公告)号：JPS55106028A
公开(公告)日：1980-08-14
申请号：JP1261879
申请日：1979-02-06
申请人： TOKYO ELECTRIC POWER CO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： MATSUZAWA KUNIO , KAI TAKAAKI
IPC分类号： H02H3/26 , H02H3/38

65. 发明专利

JP2000039457A GROUPING METHOD FOR P-Q CORRELATION CURVE OF POWER SYSTEM 失效
公开(公告)号：JP2000039457A
公开(公告)日：2000-02-08
申请号：JP20772898
申请日：1998-07-23
申请人： NISSIN ELECTRIC CO LTD , TOKYO ELECTRIC POWER CO
发明人： KAMURA TSUTOMU , FUKUNAGA TETSUYA , MATSUZAWA KUNIO , NAKAO YUICHI
IPC分类号： G01R21/133 , G01R29/00 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To obtain a grouping method in which, when a P-Q correlation becomes a multistage correlation, it is grouped automatically into several groups and a characteristic constant such as a C-term estimated value or the like is found for every group. SOLUTION: Time-series data on effective power P and reactive power Q are computed. A moving-average processing operation is performed in ST5. After that, the grouping processing operation of a P-Q correlation curve in (1) and (2) in the following is performed. After the grouping processing operation is performed, a parameter such as a C-term estimated value or the like is computed in ST 8 for every group. (1) An inclination Δj=ΔQj/ΔPj in every sample point (j) is found. When Δj

66. 发明专利

JPH02114819A PROTECTIVE RELAY 失效
公开(公告)号：JPH02114819A
公开(公告)日：1990-04-26
申请号：JP26857088
申请日：1988-10-25
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： KASHIWAMORI WATARU , SUZUKI MAKOTO , MATSUZAWA KUNIO , YOSHIDA KAZUYOSHI
IPC分类号： H02H7/04 , H02H3/40 , H02H7/045
摘要： PURPOSE:To prevent erroneous function due to excitation surge current by comparing the impedance phase operated from basic wave components of system voltage and current with the impedance phase operated from higher harmonic components thereof. CONSTITUTION:Data containing information of higher harmonics of system voltage V and current 1 during system fault or upon application of exciting surge are fed to a basic wave impedance phase operating section 16 and a second higher harmonic impedance phase operating section 17. Operating sections 16, 17 extract only relevant frequency components and operate impedance phases at those frequencies then they are outputted. A judging section 18 compares the impedance phase between the basic wave and the secondary higher harmonic, and if the difference is within + or -90 deg. it is judged that the system is faulty and no inhibit signal is outputted. Consequently, an inhibit circuit 22 opens and the interruption signal for another protective relay 20 is fed to a circuit breaker. If the phase difference is not within + or -90 deg., the judging section 18 judges application of exciting surge and produces an inhibit signal 19. Consequently, erroneous function is prevented upon application of exciting surge resulting in reliable protection.

67. 发明专利

JPS6356123A DIGITAL PROTECTIVE RELAY 失效
公开(公告)号：JPS6356123A
公开(公告)日：1988-03-10
申请号：JP19888886
申请日：1986-08-27
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： KUDO HIROYUKI , SASAKI HIROSHI , MATSUZAWA KUNIO , YOSHIDA KAZUYOSHI
IPC分类号： H02H3/40

68. 发明专利

JPS6311025A POWER SYSTEM STABILIZER 失效
公开(公告)号：JPS6311025A
公开(公告)日：1988-01-18
申请号：JP15355486
申请日：1986-06-30
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , MATSUZAWA KUNIO , OTSUKA HITOSHI , SATO MASAHIRO , KOMATA KAZUYA
IPC分类号： H02J3/24 , H02H3/48 , H02J3/38

69. 发明专利

JPS6285644A CABLE SYSTEM STABILIZER 失效
公开(公告)号：JPS6285644A
公开(公告)日：1987-04-20
申请号：JP22444585
申请日：1985-10-08
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , MATSUZAWA KUNIO , OTSUKA HITOSHI , SATO MASAHIRO , KOMATA KAZUYA
IPC分类号： H02J3/38

70. 发明专利

JPS6285640A ELECTRIC SOURCE DISCONNECTOR 失效
公开(公告)号：JPS6285640A
公开(公告)日：1987-04-20
申请号：JP22444485
申请日：1985-10-08
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , MATSUZAWA KUNIO , OTSUKA HITOSHI , YANAGIBASHI TAKESHI , KOMATA KAZUYA , SATO MASAHIRO
IPC分类号： H02J3/38

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