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1. 发明专利

JPS55138108A SEQUENCE CONTROLLER 失效
公开(公告)号：JPS55138108A
公开(公告)日：1980-10-28
申请号：JP4533679
申请日：1979-04-16
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAKAI BUNJI , KANZAKI HIDEO , MIZOGUCHI TSUYOSHI , AOTSU HIROAKI , MOROOKA YASUO , INAYAMA TSUTOMU
IPC分类号： G05B15/02 , G05B19/02 , G05B19/05 , H02P9/00
摘要： PURPOSE:To perform adequately processing as to the break of power in a short time by exercising sequence control in response to two commands before and after a change in mode and according to the state of a main equipment in case that from the state of a unit to be controlled, a mode change state is judged in power recovery to be set. CONSTITUTION:To supervisory operation board 7 of an electric power plant, the state of a main equipment is input via transmission controllers 9 and 11, in addition to commands of centralized control supervisory unit 1, to perform the stop, electric power generation, pumping-up, pumping-up standing-by, and rotary phase modification as stationary operation modes of the main equipment of the electric power plant. Here, automatic digital operation unit 13 uses a micro computer principally to send operation mode commands to the main equipment via controller 11. When a power failure is caused by the break of power, whether the stationary operation mode is set is judged by unit 13 from the states of breaker 37, electric power generating motor 39, pump water wheel 41, etc. When the mode should be changed, sequence control is exercised in response to two commands before and after the mode change and corresponding to the state of the main equipment. Consequently, the sequence processing of the power break can adequately be performed in a short time.

2. 发明专利

JPS5650462A MOVING AVERAGE VALUE DIGITAL OPERATION CONTROL 失效
公开(公告)号：JPS5650462A
公开(公告)日：1981-05-07
申请号：JP12538279
申请日：1979-10-01
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： AOTSU HIROAKI , ISONO AKIRA , MOROOKA YASUO , MIZOGUCHI TSUYOSHI , INAYAMA TSUTOMU
IPC分类号： G06F17/18
摘要： PURPOSE:To reduce the rupple component rate included in the output, by giving a constitution where a specific condition is established between the number of processed data for calculation of a moving average value and the sampling interval of data. CONSTITUTION:AC voltage (x) is converted to digital quantory x' at the sampling timing from sampling timing control unit 2 by A/D converter 1. Output x' of converter 1 is converted to absolute value x'' by absolute quantity changing equipment 3, and absolute value x'' is given to moving average value calculating unit 4 to calculate the moving average value, and output value (y) is obtained. In this case, data are rearranged to such positional relation that the numger of data x'' used in unit 4 may correspond to one-period components of x'' equivalently and x'' may be equivalent relatively. The sampling period of unit 2 and the number of data used in unit 4 are so set that position relations of all data may be different from one another and position relations on the phase between respective data may be equal to one another under this state. As a result, the data volume used for average value calculation is increased practically, and the ripple component rate of output (y) is reduced.

3. 发明专利

JP2565533B2 失效
公开(公告)号：JP2565533B2
公开(公告)日：1996-12-18
申请号：JP3276988
申请日：1988-02-17
申请人： HITACHI LTD
发明人： ITO AKIO , MIZOGUCHI TSUYOSHI
IPC分类号： H04Q9/00 , H04Q9/02

4. 发明专利

JPS60120410A SEQUENCE CONTROLLER 失效
公开(公告)号：JPS60120410A
公开(公告)日：1985-06-27
申请号：JP22843283
申请日：1983-12-05
申请人： HITACHI LTD
发明人： ITOU AKIO , KANZAKI HIDEO , MIZOGUCHI TSUYOSHI
IPC分类号： G05B23/02 , G05B19/048 , G05B19/05 , G06F3/153
摘要： PURPOSE:To perform characteristic analysis or the like without connecting a control object with a sequence controller by stopping the sequence controller at an optional control step to display sequence information. CONSTITUTION:A sequence controller 101 is connected directly to a plant simulator 300 which simulates the control objects, and they exchange data. This controller 101 is provided with a CPU112 as the center, and programs and data are stored in individual memories 109. A programming support tool 102 which debugs the soft sequence and a CRT104 are connected through a debugging control part 100. The controller 101 is stopped by the start of an optical macro instruction inputted on a keyboard 105 of the programming support tool 102 by address comparing and temporary stop functions, and sequence information are displayed on the CRT104 during this stop time.

5. 发明专利

JPS593101B2 JPS593101B2 - 失效
公开(公告)号：JPS593101B2
公开(公告)日：1984-01-23
申请号：JP1319976
申请日：1976-02-12
申请人： Hitachi Ltd
发明人： MIZOGUCHI TSUYOSHI , FUKUSHIMA MAMORU
IPC分类号： H02J3/42 , H02J3/08

6. 发明专利

JPS57137656A HIGH EFFICIENCY OPERATION CONTROL METHOD FOR WATER LIFT POWER STATION 失效
公开(公告)号：JPS57137656A
公开(公告)日：1982-08-25
申请号：JP2138481
申请日：1981-02-18
申请人： HITACHI LTD
发明人： SUGISAKA HIROSHI , MIZOGUCHI TSUYOSHI , OKUYAMA TAKESHI
IPC分类号： F03B15/02 , F03B15/00 , H02P9/04
摘要： PURPOSE:To perform high efficiency operation control of a water lift power station by making selection of the equipment to be run with mininum loss and direction for the load distribution through the calculation of the pen stock loss based on the command from the control station. CONSTITUTION:A processor 4 calculates the maximum number to be operated when the number of running unit and water level difference become known, the datas such as the pen stock loss and the flow rate-head characteristic curve of the pump water wheel being stored in said processor 4 previously. A command is given to each pump water wheel and guide vane operating part 6-1-6-4 based on the calculation of the pen stock loss and the number of equipment to be run, and at the same time giving the instruction for the proper opening of the guide vane to obtain maximum efficiency thereby enabling high efficiency operation of the water lift power station.

7. 发明专利

JPS5419117A THYRISTOR START CONTROL SYSTEM FOR PUMPINGGUP POWER STATION 失效
公开(公告)号：JPS5419117A
公开(公告)日：1979-02-13
申请号：JP8389877
申请日：1977-07-13
申请人： HITACHI LTD
发明人： OKUYAMA TAKESHI , MIZOGUCHI TSUYOSHI , SUGISAKA HIROSHI
IPC分类号： H02J3/40 , H02J15/00
摘要： PURPOSE:To operate a smooth starting with a synchronous start system and a thyristor start system jointly applied in a simple constitution, by means of providing a disconnector for bypassing the thyristor start circuit, when a thyristor start bus line is commonly used.

8. 发明专利

JPS53401A DRAIN CONTROL SYSTEM 失效
公开(公告)号：JPS53401A
公开(公告)日：1978-01-06
申请号：JP7326976
申请日：1976-06-23
申请人： HITACHI LTD
发明人： KONDOU YOSHIYASU , MIZOGUCHI TSUYOSHI
IPC分类号： F03B15/14 , F04B49/02 , F04F5/48
摘要： PURPOSE:To surely prevent air-intake to a rotary pump in a drain control system employing a jet pump and a rotary pump, by connecting a plurality of water level detectors to each of pump stopping circuits by way of OR and AND circuits.

9. 发明专利

JPS5217633A REMOTE CONTROL SETTING PROCESS OF POWER SYSTEM PROTECTING CONTROL SYST EM 失效
公开(公告)号：JPS5217633A
公开(公告)日：1977-02-09
申请号：JP9315375
申请日：1975-08-01
申请人： HITACHI LTD
发明人： MIZOGUCHI TSUYOSHI , MIYAZAKI TERUNOBU
IPC分类号： H02H3/02 , H02J3/00 , H02J13/00 , H04Q9/00
摘要： PURPOSE:The system dispensible of the conventional circuit power interruption and stand-by safeguard by the facilitation of the setting alteration at the very short time (for example 1-2m s).

10. 发明专利

JPS526949A REMOTE SET SYSTEM 失效
公开(公告)号：JPS526949A
公开(公告)日：1977-01-19
申请号：JP8177575
申请日：1975-07-04
申请人： HITACHI LTD
发明人： MIZOGUCHI TSUYOSHI , MIYAZAKI TERUNOBU
IPC分类号： H02H3/02 , H02H7/26 , H02J3/00 , H02J13/00 , H04Q9/00
摘要： PURPOSE:A romote set system, to certainly operate the data transmission and set change, when taking place a set change requirement for the device to be controlled because of a change of the system power supply condition and/or composition.

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