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1. 发明专利

JPS5941120A Stop control system for multiterminal dc transmitter 失效
标题翻译：多功能直流发电机停止控制系统
公开(公告)号：JPS5941120A
公开(公告)日：1984-03-07
申请号：JP15130382
申请日：1982-08-31
申请人： Tokyo Electric Power Co , Hitachi Ltd
发明人： SAKURAI BUICHI , GOTOU KIYOSHI , SUGAWARA SHIYOUICHI , KONISHI HIROO
IPC分类号： H02J1/00

2. 发明专利

JPS57153565A CONTROLLER FOR AC/DC CONVERTER 失效
公开(公告)号：JPS57153565A
公开(公告)日：1982-09-22
申请号：JP3784081
申请日：1981-03-18
申请人： DENRIYOKU CHUO KENKYUSHO , HITACHI LTD
发明人： MACHIDA TAKEHIKO , YOSHIDA YUKIO , TAKENAKA KIYOSHI , SHIRAHAMA HIDEFUMI , SUGAWARA SHIYOUICHI , IYOTANI RIYUUJI , KONISHI HIROO
IPC分类号： H02M7/17 , G05F1/10 , H02J1/00 , H02M7/155
摘要： PURPOSE:To instantaneously switch between both a constant current controlling state and a constant-voltage controlling state by transferring the output of one controlling system to the other controlling system at the time of switching between both the controlling states. CONSTITUTION:Whether or not a constant current controlling state is to be executed is judged by a judging step 21, and when the constant current controlling is executed, whether or not the previous arithmetic processing is a constant voltage controlled calculation is judged by a judging step 22. In a processing step 23, the contents of the previous constant voltage controller arithmetic processing 29 as a result of calculation VR0 are transferred to CR0. A processing step 24 calculates the varied amount of the constant current control signal, the result is added to the previous constant current control signal CR0 as a constant current control signal CR, the processing step 25 transfers it to the CR0, the processing step 26 outputs the CR0 to the phase controller 18 through an output circuit 17, allowing the controller 18 to operate under the constant current control and to be completed. This operation is similarly executed even when the constant voltage control is executed. In this manner, since the control after switching is executed with the operating point before the switching as an initial state, smooth control can be executed.

3. 发明专利

JPS53114047A DC TRANSMISSION LINE FAULT DETECTOR 失效
公开(公告)号：JPS53114047A
公开(公告)日：1978-10-05
申请号：JP2791577
申请日：1977-03-16
申请人： HITACHI LTD
发明人： SUGAWARA SHIYOUICHI , WATANABE ATSUMI
IPC分类号： H02H3/00
摘要： PURPOSE:To eliminate the effect of AC power drift by using the stored value of the AC applied at normal time as the reference value for detecting the overlapped AC power change.

4. 发明专利

JPS5330751A FAULT DETECTOR FOR DC TRANSMISSION LINE 失效
公开(公告)号：JPS5330751A
公开(公告)日：1978-03-23
申请号：JP10486176
申请日：1976-09-03
申请人： HITACHI LTD
发明人： SUGAWARA SHIYOUICHI , WATANABE ATSUMI , FUJII NORITOSHI
IPC分类号： H02H3/26 , H02H3/28
摘要： PURPOSE:To make a detection correctly and in a moment without a time delay for those faults, if taking place, like earth fault in the neutral line of DC power transmission line system.

5. 发明专利

JPS60148344A LONG DISTANCE DC TRANSMISSION APPARATUS 失效
公开(公告)号：JPS60148344A
公开(公告)日：1985-08-05
申请号：JP200284
申请日：1984-01-11
申请人： HITACHI LTD
发明人： SUGAWARA SHIYOUICHI
IPC分类号： H02J1/00 , H02J3/36

6. 发明专利

JPS60148321A DEFECT DETECTING SYSTEM OF ELECTRIC SYSTEM 失效
公开(公告)号：JPS60148321A
公开(公告)日：1985-08-05
申请号：JP301884
申请日：1984-01-11
申请人： DENRIYOKU CHUO KENKYUSHO , HITACHI LTD
发明人： ISHIKAWA IWAO , YOSHIDA YUKIO , KONISHI HIROO , SUGAWARA SHIYOUICHI
IPC分类号： G01R31/02 , H02H3/00

7. 发明专利

JPS56162931A MULTITERMINAL DC TRANSMISSION SYSTEM CONTROL SYSTEM 失效
公开(公告)号：JPS56162931A
公开(公告)日：1981-12-15
申请号：JP6392480
申请日：1980-05-16
申请人： HITACHI LTD
发明人： SHIRAHAMA HIDEFUMI , KONISHI HIROO , SUGAWARA SHIYOUICHI , AMANO HISAO
IPC分类号： H02J1/00

8. 发明专利

JPS55122432A BIPOLAR DC TRANSMISSION DEVICE 失效
公开(公告)号：JPS55122432A
公开(公告)日：1980-09-20
申请号：JP2991679
申请日：1979-03-16
申请人： HITACHI LTD
发明人： SUGAWARA SHIYOUICHI
IPC分类号： H02J1/00 , H02H3/12 , H02H3/26

9. 发明专利

JPS5523741A METHOD OF CONTROLLING OPERATION OF ACCDC CHANGEOVER UNIT 失效
公开(公告)号：JPS5523741A
公开(公告)日：1980-02-20
申请号：JP9461578
申请日：1978-08-04
申请人： HITACHI LTD
发明人： KONISHI HIROO , KAWAI TADAO , SUGAWARA SHIYOUICHI
IPC分类号： H02M7/17 , H02J3/36 , H02J5/00 , H02M7/145

10. 发明专利

JPS51134856A OVERVOLTAGE CONTROLLING SYSTEM OF D*C* POWER TRANSMISSION SYSTEM 失效
公开(公告)号：JPS51134856A
公开(公告)日：1976-11-22
申请号：JP5912275
申请日：1975-05-16
申请人： HITACHI LTD
发明人： WATANABE ATSUMI , SUGAWARA SHIYOUICHI , MIZUKOSHI AKIO , FUJII NORITOSHI
IPC分类号： H02J1/00 , G05F1/10 , H02H3/00 , H02H3/20 , H02H7/12
摘要： PURPOSE:A protective means of D.C. transmission system capable of efficiently controlling the over voltage due to the full voltage actuation, generated in abnormal starting actuation.

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