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1. 发明专利

JPH0561872B2 失效
公开(公告)号：JPH0561872B2
公开(公告)日：1993-09-07
申请号：JP1156982
申请日：1982-01-29
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： SAKURAI BUICHI , HORIUCHI SUSUMU , NAKAMURA TOMOHARU , KAWAI TADAO , KONISHI HIROO , SHIRAHAMA HIDEFUMI
IPC分类号： H02M7/155 , H02M7/515

2. 发明专利

JPS60241719A METHOD OF CONTROLLING THYRISTOR CONVERTER 失效
公开(公告)号：JPS60241719A
公开(公告)日：1985-11-30
申请号：JP9288184
申请日：1984-05-11
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： SAKURAI BUICHI , GOTOU KIYOSHI , NAKAMURA TOMOHARU , KAWAI TADAO
IPC分类号： H02J1/00 , H02M7/12 , H02M7/155

3. 发明专利

JPS5953035A Cooperation control system with atomic power generator in dctransmission system 失效
公开(公告)号：JPS5953035A
公开(公告)日：1984-03-27
申请号：JP16231582
申请日：1982-09-20
申请人： Tokyo Electric Power Co , Hitachi Ltd
发明人： SAKURAI BUICHI , GOTOU KIYOSHI , KONISHI HIROO , KAWAI TADAO
IPC分类号： H02J3/36 , H02J1/00
CPC分类号： Y02E60/60

4. 发明专利

JPS5953024A Dc transmitting system 失效
标题翻译：直流发电系统
公开(公告)号：JPS5953024A
公开(公告)日：1984-03-27
申请号：JP16230982
申请日：1982-09-20
申请人： Tokyo Electric Power Co , Hitachi Ltd
发明人： SAKURAI BUICHI , GOTOU KIYOSHI , KAWAI TADAO , KANOU TAKASHI
IPC分类号： H02J1/00 , H02M7/515

5. 发明专利

JPH03277121A CONTROL AND PROTECTION SYSTEM FOR SELF-EXCITATION TYPE CONVERTER 失效
公开(公告)号：JPH03277121A
公开(公告)日：1991-12-09
申请号：JP7333190
申请日：1990-03-26
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： SHIMAMURA HIDEHIKO , KAWAI TADAO , TOKIWA YUKIO , SUZUKI KENICHI
IPC分类号： H02H7/122 , H02H7/16 , H02J3/18
摘要： PURPOSE:To protect a self-excitation type converter safely and surely and to control an effective use of equipment by detecting a discharge current of a direct-current capacitor when a trouble occurs, controlling discharge of the direct-current capacitor rapidly and by using the control function effectively even during the trouble. CONSTITUTION:A control and protection device 600 controls a converter and a direct-current switch 51 according to each relay operation signal. When a direct current short circuit occurs on the direct current side, a discharge current of a capacitor 40 flows toward the point where the short circuit occurred from the capacitor 40 while a high-speed direct over-current relay 100 installed on a direct-current capacitor circuit starts operation when it exceeds a detection sensitivity, opening a direct-current switch 51 to cut off the faulty current. From the start of the direct-current switch to the settlement of the trouble, the reactive power of an alternating current can be under control by the energy of the direct-current capacitor 40.

6. 发明专利

JPH01170318A RATIO DIFFERENTIAL RELAY 失效
公开(公告)号：JPH01170318A
公开(公告)日：1989-07-05
申请号：JP32577687
申请日：1987-12-23
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： MATSUI YOSHIAKI , SANO KAZUHIRO , KAWAI TADAO , SASAKI HIROSHI , OURA YOSHIFUMI , YOSHIDA KAZUYOSHI , MAEDA TAKAFUMI
IPC分类号： H02H3/28
摘要： PURPOSE:To effectively distinguish a detection current due to an internal accident from that due to an external accident by obtaining an operation amount and a suppression amount at the time of nonsaturation in each cycle of a line current, and detecting the amplitude of a differential value due to a phase difference with an accident current. CONSTITUTION:A ratio differential relay is composed of operation amount calculating means, suppression amount calculating means and accident discriminating means. The operation amount calculating means calculates the sum of the momentary values of two line currents, calculates the operation amount of the relay on the basis of the absolute values of the difference of the present value of the sum of the calculated momentary values and a value before a predetermined time, calculates the scalar sum of the momentary values of the two line currents, and calculates the suppression amount of the relay on the basis of the absolute value of the difference of the present value of the calculated scalar sum and a value before a predetermined time. The accident discriminating means calculates the difference value between the operation amount and the suppression amount, and discriminates the content of the accident on the basis of the difference value.

7. 发明专利

JPS6258831A HIGH VOLTAGE DC TRANSMISSION CONTROLLER 失效
公开(公告)号：JPS6258831A
公开(公告)日：1987-03-14
申请号：JP19364985
申请日：1985-09-02
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： ISHIKAWA MASAHIRO , HORIUCHI SUSUMU , NAKAMURA TOMOHARU , KAWAI TADAO
IPC分类号： H02J1/00 , H02M7/155 , H02M7/515

8. 发明专利

JPS6240023A INVERSION OF TIDAL WAVE 失效
公开(公告)号：JPS6240023A
公开(公告)日：1987-02-21
申请号：JP17774685
申请日：1985-08-14
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： ISHIKAWA MASAHIRO , HORIUCHI SUSUMU , KAWAI TADAO , SAWADA HIDEJI , NAKAMURA TOMOHARU
IPC分类号： H02J1/00 , H02J3/36

9. 发明专利

JPS6231332A PULSE PHASE DIFFERENCE COMPENSATION CIRCUIT OF AC-DC CONVERTER 失效
公开(公告)号：JPS6231332A
公开(公告)日：1987-02-10
申请号：JP16761385
申请日：1985-07-31
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： ISHIKAWA MASAHIRO , HARA CHIKUSHI , KOMI YUTAKA , MADORI IWAO , KAWAI TADAO
IPC分类号： G05F1/10 , H02J1/00 , H02J3/36

10. 发明专利

JPS57193802A MULTIPLEX PROCESSING DEVICE 失效
公开(公告)号：JPS57193802A
公开(公告)日：1982-11-29
申请号：JP7668781
申请日：1981-05-22
申请人： TOKYO ELECTRIC POWER CO , HITACHI LTD
发明人： SAKURAI BUICHI , HORIUCHI SUSUMU , NAKAMURA TOMOHARU , KAWAI TADAO
IPC分类号： G05B9/03
摘要： PURPOSE:To reduce the difference at point of time of a pulse output, by inputting the same types and values of inputs used at the software of each digital device and making the operation processing periods among the digital devices coincident with each other as much as possible. CONSTITUTION:A multiplex processing section 11 controls a trigger angle by selecting one pulse. Each operating section 7 obtains a current input from a respective input section 6 and introduces current inputs of other digital devices via a photoelectric converter 13 and an optical cable 12. One signal out of three current inputs introduced is used for the operation at each section 7. The same value is used for each operation section for the operation. A clock 14 specifying the operation period of each digital device is synchronized with an external forced signal 21. It is required for the forced signal 21 to be generated suitably, and in this case, the signal is generated in synchronizing with the zero point of a voltage signal.

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