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31. 发明专利

JPH04289721A PROTECTIVE DEVICE FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH04289721A
公开(公告)日：1992-10-14
申请号：JP7862891
申请日：1991-03-18
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , OKIMOTO AKEMICHI , NAKAMURA TOSHIHIKO
IPC分类号： H02H7/22 , H02H9/02 , H03K17/08
摘要： PURPOSE:To protect a distribution line from the wire breaking by arc when an fault current is detected, without using a thyristor of large capacity. CONSTITUTION:A thyristor device 3 for compulsorily grounding a distribution line 2 is provided in advance in the position separate from a distribution substation 1, and when an accident current is detected, the thyristor device 3 is operated. Hereby, the system voltage drops, and the wire breaking by arc can be prevented. Moreover, because of the impedance of the distribution line 2, the current flowing in the thyristor device 3 can be made small, and the capacity of the thyristor can be miniaturized.

32. 发明专利

JPH0340722A MONITORING SYSTEM FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH0340722A
公开(公告)日：1991-02-21
申请号：JP17376889
申请日：1989-07-04
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI , KUNIEDA TOSHIHITO , KANO MASAAKI
IPC分类号： H02H7/26 , H02H7/20 , H04B10/03 , H04B10/032 , H04B10/035 , H04B10/079 , H04B10/275 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/69
摘要： PURPOSE:To continue communication between a master station and slave stations even if fault occurs on optical signal lines by providing a receiving level judging unit for the optical signal lines, an input and output circuit converters for switching one of input or output contacts arranged at the secondary of the receiving level judging unit. CONSTITUTION:Assuming faults occur at same positions on optical signal lines 3, 4, provision of signals from rightward optical signal lines 4 to slave stations K1-K9 is interrupted and signals are provided from the leftward optical signal lines 3. Consequently, the circuit is switched such that the output signal advances while being inverted rightward by means of an optical signal 4. Since provision of leftward optical signals 3 to the slave stations K1-Kn is interrupted, signals are provided rightward through the optical signal lines 4 and the circuit is switched such that the output signal advances while being inverted by means of the optical signal line 3.

33. 发明专利

JPH02297069A COUPLING STRUCTURE OF INSULATED CYLINDRICAL BODY AND ELECTRIC WIRE IN CURRENT DETECTOR 失效
公开(公告)号：JPH02297069A
公开(公告)日：1990-12-07
申请号：JP11928789
申请日：1989-05-12
申请人： TOKYO ELECTRIC POWER CO , NGK INSULATORS LTD
发明人： WAKE SHOJI , MORIKAWA MASAYUKI , OKIMOTO AKEMICHI , KUNIEDA TOSHIHITO , KAMEJIMA YOSHIAKI
IPC分类号： G01R15/24
摘要： PURPOSE:To easily perform a fixing work to couple an electric wire to an insulated cylindrical body with a simple handling by fitting with screw to fix a cap on the upper part of a clamp component under the condition that the electric wire is inserted and housed in a recessed part for wire housing provided on the insulated cylindrical body. CONSTITUTION:When the cap 16 is fitted with screw and fixed on the upper part of the clamp component 4 under the condition that the electric wire 15 is inserted and housed in the recessed part 5 for wire housing provided on the insulated cylindrical body 1, the wire 15 is pressed and fixed on the cylindrical body 1 by a fastening of the cap 16. A light generated from a light source is transmitted to a current sensor 26 through an optical fiber 30 for incident light, and the change of a current proportional to the current flowing in the wire 15 is converted to a strong/weak signal of light in the sensor 26. Next, the signal is transmitted to a measuring device through an optical fiber 31 for exit light, wherein the current flowing to the wire 15 is measured. Consequently, the wire 15 can be easily coupled and fixed on the cylindrical body 1 without requiring tools like a spanner, etc.

34. 发明专利

JPH02262070A MONITORING APPARATUS FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH02262070A
公开(公告)日：1990-10-24
申请号：JP8303089
申请日：1989-03-31
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI , KUNIEDA TOSHIHITO , KANO MASAAKI
IPC分类号： G01R31/02
摘要： PURPOSE:To monitor many sensor signals stably by connecting a relay unit and measuring unit with optical signal lines, multiplexing the sensor signals from electric lines in the relay unit, transducing the signals into optical signals, and inputting the signals into the measuring unit. CONSTITUTION:Sensors 3, 4 and 5 which are provided for electric lines 2a, 2b and 2c of overhead electric lines 2 having the respective phases detect the magnitudes of the voltages or the currents of the lines. The analog signals are inputted into a multiplexer 16 of a relay unit 6. Meanwhile, in a measuring unit 7, a counter 31 generates a synchronizing pulse signal in accordance with a reset timer 25. The synchronizing pulse signal is imparted to the multiplexer 16 through a photodiode 15. The multiplexer 16 inputs the electric signals from the sensors 3, 4 and 5 in accordance with the synchronizing pulse signals into an A/D converter 17 sequentially. The multiplexed signals are sent into the measuring unit 7 from a light emitting diodes 18. The light is received with a photodiode 19 in the measuring unit 7. The individual signals from the sensors 3, 4 and 5 are regenerated, and the lines can be monitored.

35. 发明专利

JPH0284014A DISTRIBUTION LINE MONITORING SYSTEM 失效
公开(公告)号：JPH0284014A
公开(公告)日：1990-03-26
申请号：JP23587388
申请日：1988-09-20
申请人： NGK INSULATORS LTD
发明人： NAGASAKA HIROMI , OKIMOTO AKEMICHI , ITO YOSHITAKA
IPC分类号： G01R31/08 , H02H3/04 , H02H7/26 , H02J13/00
摘要： PURPOSE:To cope quickly with fault by operating operational command data based on detection date and state data at respective slave stations and storing the operated command data. CONSTITUTION:Each slave station K writes detection data end state data into a data frame and transmits them to a master station 2 every predetermined time. The CPU 11 at the master station 2 operates operational command data for each slave station K based on the newest detection data and state data at each slave station K then writes the operated command data into two RAMs 8, 9. When the CPU 11 at the master station judges occurrence of fault based on the newest detection date, operation and writing of the operational command data are stopped immediately through an interruption routine. At the same time, faulty distributing section is judged and optimal corresponding data are read out from the other RAM 9. Then the data are written into a data frame and transmitted through a communication unit 7 to respective slave stations K.

36. 发明专利

JPH0283467A APPARATUS FOR DETECTING DISTRIBUTION LINE ACCIDENT SECTION 失效
公开(公告)号：JPH0283467A
公开(公告)日：1990-03-23
申请号：JP23587288
申请日：1988-09-20
申请人： NGK INSULATORS LTD
发明人： NAGASAKA HIROMI , OKIMOTO AKEMICHI , KUNIEDA TOSHIHITO
IPC分类号： G01R31/08 , H02H7/26
摘要： PURPOSE:To detect an earth accident place using a small-sized detector by mounting a current transformer to an overhead earth wire. CONSTITUTION:Distribution lines U, V, W of respective phases are arranged to utility poles 1 and lightning overhead earth wire 2 is applied to the upper end parts of the utility poles 1. A current transformer (CT)3 as a sensor for detecting a phase current is provided to either one of the phases of the wiring section An of distribution lines U, V, W and a CT 7 is provided to the lightning overhead earth wire 2. A judge circuit 4 for judging an earth direction on the basis of the detected phase current and earth current is connected to both of the CT 3 and the CT 7 and the currents are transmitted to a monitor station through a communication apparatus 6 and a communication line 5. The magnitude of the earth current detected by the CT 7 becomes large toward an accident point and the phase difference between the currents by the CTs 3, 7 is reversed between the upstream and downstream parts of the accident point and, therefore, this phenomenon is utilized to make it possible to judge the accident point.

37. 发明专利

JPH0283414A OPTIC/ELECTRIC TRANSDUCER 失效
公开(公告)号：JPH0283414A
公开(公告)日：1990-03-23
申请号：JP23587088
申请日：1988-09-20
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI , KANO MASAAKI , NIWA ATSUHIKO
IPC分类号： G01D5/26
摘要： PURPOSE:To correct the loss of a transmission path without complicating the constitution on the side of a light emitter by extracting only a DC component on the basis of the output signal of an amplifying means and adjusting the mu-factor of the amplifying means on the basis of the output signal of a DC extraction means. CONSTITUTION:The output signal amplified by the first amplifying circuit 2 is outputted to an AC extractor 4 through a buffer 3 and only a measuring signal component is separated to be outputted to the second amplifying circuit 5 and amplified by the final stage amplifier to be outputted as a measuring signal. Only a DC component is extracted on the basis of the output signal of the first amplifying circuit 2 by a DC extractor 27 and the mu-factor of the first amplifying circuit 2 is controlled by a controller 28 on the basis of the output signal of the DC extractor 27. As mentioned above, since a receiving signal is corrected on the side of a photodetector, it is unnecessary to form complicated circuit constitution for controlling the quantity of the light from a light emitter to perform correction and correction can be performed by relatively simple constitution.

38. 发明专利

JP2002049983A JOINT METER INSPECTION SYSTEM 失效
公开(公告)号：JP2002049983A
公开(公告)日：2002-02-15
申请号：JP2000232686
申请日：2000-08-01
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI
IPC分类号： G08C19/00
摘要： PROBLEM TO BE SOLVED: To provide a joint meter inspection system which can rationalize the meter inspection about electricity, gas and water for reducing the meter inspection cost of them. SOLUTION: The common consumer house numbers are set about electricity, gas and water, and a terminal computer 2 carried by a meter inspector who is patrolling every consumer house is provided with a storage means 11 storing the common consumer house numbers, a storage means 12 storing the meter inspection value of the preceding month about electricity, gas and water of every consumer house, a storage means 13 storing the inputted meter inspection value of this month and a storage means 14 storing the quantity consumed in this month about electricity, gas and water, which are calculated by subtracting the meter inspection value of the preceding month from that of this month. Thus, a single meter inspector can simultaneously inspect the meters of electricity, gas and water and downloads these inspection data into a host computer 1 of a meter inspection master station after the inspector finishes his/her patrolling jobs.

39. 发明专利

JPH1070855A POWER FEED MANAGEMENT SYSTEM FOR POWER USER BY REMOTE CONTROL 失效
公开(公告)号：JPH1070855A
公开(公告)日：1998-03-10
申请号：JP22471796
申请日：1996-08-27
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI , KATO TORU
IPC分类号： H02J13/00
摘要： PROBLEM TO BE SOLVED: To provide a power feed management system for power users by remote control which can conduct power feed start, stop and confirmation by remote control. SOLUTION: A power feed control and confirmation device 3 provided with a switch 6 operated by a radio signal and a circuit for confirming the operation of the switch is provided in series to the watthour meter 2 of a power user. The switch 6 is operated by a radio signal from a distant place at designated time for power feed start or stop. The operation of the switch 6 is confirmed according to the radio signal from the distant place, and its results are transmitted to the distant place through the radio signal. A PHS or pocket telephone is used as a radio signal transmitter receiver 4.

40. 发明专利

JPH09120500A MANAGEMENT SYSTEM FOR BUSINESS VEHICLE 失效
公开(公告)号：JPH09120500A
公开(公告)日：1997-05-06
申请号：JP27797795
申请日：1995-10-25
申请人： NGK INSULATORS LTD
发明人： OKIMOTO AKEMICHI , KATO TORU
IPC分类号： G09B29/10 , B65G61/00 , G01C21/00 , G01C21/26 , G06Q50/00 , G06Q50/06 , G06Q50/30 , G08G1/13 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To provide the management system for business vehicles which can easily grasp the position of a business vehicle at a visiting place by detecting the position by a control center, and selects and sends a proper business vehicle to a destination place. SOLUTION: To an information processor 25 of the control center 23, a map information storage device 26, a facility map information storage device 27, and an input device 28 are connected. Further, a radio communication device 31 is connected to the information processor 25 and information can be interchanged with a business vehicle 24. The business vehicle 24 is equipped with a navigation device 41 and to its information processor 42, an image display device 47 and a radio communication device 50 are connected. Then the business vehicle 24 sends its position coordinate data and moves from the current place to the destination position under the command of the control center 23.

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