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1. 发明专利

JPH0646527A FAULT SECTION LOCATOR AND SLAVE STATION THEREOF 失效
公开(公告)号：JPH0646527A
公开(公告)日：1994-02-18
申请号：JP19667592
申请日：1992-07-23
申请人： CHUBU ELECTRIC POWER , MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI SHIGEYUKI , ICHIKAWA YAOJI , MAEKAWA HIROSHI , DOI SHOICHI , KOJIMA YASUAKI , OGURA SHINZO
IPC分类号： G01R31/08 , H02H7/22 , H02H7/26 , H02J13/00 , H04Q9/00
摘要： PURPOSE:To obtain a fault section locator for transmitting data, representative of condition detection amounts of a large number of circuits, on faint radio wave with no influence of noise. CONSTITUTION:A circuit condition amount detecting section L, a data storage section 27 for storing the circuit condition amounts for a predetermined period, and transmitting/receiving sections 20, 29 for receiving signals from a master station 3A and transmitting stored data to the master station are provided at a slave station 2A while transmitting/receiving sections 30, and 35a-35c for transmitting data update stop command and data transmission command to the slave station and receiving stored data from the slave station, and a CPU 38 for stopping update of data at the slave station upon elapse of a predetermined time lag after provision of a trip command TP and subjecting the stored data to location processing are provided at the master station thus locating a fault section upon finish of tripping of circuit breaker.

2. 发明专利

JPH04262271A CABLE WAY MONITOR 失效
公开(公告)号：JPH04262271A
公开(公告)日：1992-09-17
申请号：JP1416391
申请日：1991-02-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGURA SHINZO , DOI SHOICHI , KOJIMA YASUAKI
IPC分类号： G01R29/00 , H01F38/20 , H02G1/02
摘要： PURPOSE:To obtain a stable power source of a cable way monitor provided to a cable way to measure an operation parameter of a power line, etc., and made to detect and transmit the operation parameter of the cable way. CONSTITUTION:In this construction, an electrode is arranged around a conductor 1 to detect a operation parameter, insulated from this conductor 1, and the charging current flowing through this electrode is converted into voltage to be made the power source of a cable way monitor. By this, the cable way monitor without receiving the influence of the cable way current and capable of operating stably is obtained.

3. 发明专利

JPH04142471A ACCIDENT ZONE ORIENTING DEVICE 失效
公开(公告)号：JPH04142471A
公开(公告)日：1992-05-15
申请号：JP26546490
申请日：1990-10-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOJIMA YASUAKI , DOI SHOICHI
IPC分类号： G01R31/08
摘要： PURPOSE:To detect an accident without being affected by the ambient environment by utilizing sensors reacting to ultraviolet rays with the wavelength shorter than 300nm and not affected by ultraviolet rays with long wavelengths from the solar light. CONSTITUTION:Sensors 21a, 21b, 21c, 21d are arranged on the X, Y axes, detect ultraviolet rays with the wavelength 300nm or below, and output the wave-forms corresponding to respective ultraviolet rays. Pulse converters 22a, 22b, 22c, 22d outputting pulse wave-forms in response to the output wave-forms of the sensors 21a, 21b, 21c, 21d output the detected pulses at a fixed interval when the sensor outputs are continuously outputted. When the detected pulses of the pulse converters 22 are continuously outputted for a preset period, an accident zone judging means 24 orients the accident zone.

4. 发明专利

JPH03222614A EARTH FAULT DETECTOR OF GAS-INSULATED SWITCHGEAR 失效
公开(公告)号：JPH03222614A
公开(公告)日：1991-10-01
申请号：JP1613190
申请日：1990-01-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： DOI SHOICHI , WAKIMOTO HAJIME , KATAOKA TAKAHIRO
IPC分类号： H02B13/065
摘要： PURPOSE:To simplify an apparatus to facilitate an earth fault detection by providing a chamber communication via a stop valve and another chamber communicating with the former via a small hole and also by providing a member for detecting the displacement of members through a pressure difference between the two chambers and an outlet for discharging a gas in each chamber. CONSTITUTION:Discharge holes 24, 25 are opened and the atmospheric air is caused to flow into detectors 13A, 13B. A measuring apparatus 20 is connected with the second discharge hole 25, a vacuum is drawn up to a predetermined pressure on the first chamber 13B side or a stop valve 23 is operated so that the pressure of a second chamber 13B is raised to give displacement to a bellows 14, and the operation of a detector 12 is checked. A vacuum is drawn to the detector 12 by a vacuum pump 21, the stop valve 8A is opened, then a gas is enclosed in the detector 12, and a display is turned ON.

5. 发明专利

JPH03270608A ULTRASONIC WAVE DETECTOR 失效
公开(公告)号：JPH03270608A
公开(公告)日：1991-12-02
申请号：JP6414290
申请日：1990-03-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： DOI SHOICHI , KOJIMA YASUAKI
IPC分类号： G01R31/08 , G01H17/00 , G01N29/14 , G08B21/00 , H02B3/00 , H02B13/065 , H02H5/00
摘要： PURPOSE:To indicate a location of a grounding point correctly by giving an alarm when a frequency of an arc is identified by a plurality of ultrasonic receivers and frequency analyzers which are installed to compare and analyze the frequency by an external environment and the frequency of an arc generated at the time of grounding. CONSTITUTION:Sensors 5-10 are placed as ultrasonic receivers around blocks 1-4 which are supposed to be air-point transforming stations. For example, when ultrasonic waves are generated in the block 1 following an occurance of a grounding, the grounding is caught by the sensors 5 and 9 located on X and Y axes and the location of the grounding can be detected. An ultrasonic- wave signal caught by the sensor 5 is amplified and then is converted by an A/D converter 24b and is analyzed by an arithmetic circuit 24c based on the digital data gained from the A/D converter. According to the result of the analyzation, an alarm is supplied to an indicator 24e via an output circuit 24d to be indicated.

6. 发明专利

JPS6355738B2 失效
公开(公告)号：JPS6355738B2
公开(公告)日：1988-11-04
申请号：JP1133981
申请日：1981-01-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： DOI SHOICHI
IPC分类号： H02B13/02 , H01H33/66 , H02B13/08

7. 发明专利

JPS63144705A RUBBER VIBRATION INSULATOR 失效
公开(公告)号：JPS63144705A
公开(公告)日：1988-06-16
申请号：JP29066586
申请日：1986-12-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： DOI SHOICHI , IECHIKA YUTAKA
IPC分类号： H02B1/54 , H02B1/00 , H02B1/32

8. 发明专利

JPH07264753A GAS INSULATION APPARATUS 失效
公开(公告)号：JPH07264753A
公开(公告)日：1995-10-13
申请号：JP4701094
申请日：1994-03-17
申请人： KANSAI ELECTRIC POWER CO , SHIKOKU ELEC POWER , ELECTRIC POWER DEV CO , MITSUBISHI ELECTRIC CORP
发明人： TAKEJI NAOAKI , NAKAKOSHI YOSHIHIKO , MAKINO YOSHINORI , TAKEUCHI HIROSHI , ARAI RYUICHIRO , DOI SHOICHI
IPC分类号： H02G5/06
摘要： PURPOSE:To capture a conductive contamination mingled in a metallic container used in DC high-voltage power distribution, by putting a trapping plate among a plurality of main circuit conductors with the same potential. CONSTITUTION:In a metallic container 1 connected with the ground and filled with an insulating gas 2, a trapping plate 4 with a recessed part on the upper face is provided among a plurality of main-circuit conductors 3 put horizontally in parallel with the same potential. Since the conductor 3 has the same potential, a space surrounded by the conductors 3 has substantially no or weak magnetic field. In this space, a conductive contamination is not affected by attractive force caused by the magnetic field, and the contamination is trapped on the recessed part of the trapping plate 4. Then, the metallic container 1 can be used in DC high-voltage power distribution.

9. 发明专利

JPS61191205A GAS INSULATED SWITCHGEAR 失效
公开(公告)号：JPS61191205A
公开(公告)日：1986-08-25
申请号：JP3060585
申请日：1985-02-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： DOI SHOICHI , IECHIKA YUTAKA , TSUCHIMOTO MASATAKA
IPC分类号： H02B3/00 , H02B13/02

10. 发明专利

JPH08203364A GAS-INSULATED ELECTRICAL EQUIPMENT 失效
公开(公告)号：JPH08203364A
公开(公告)日：1996-08-09
申请号：JP1066495
申请日：1995-01-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAUCHI TAKAO , DOI SHOICHI
IPC分类号： C25D15/02 , H01H1/02 , H01H1/023 , H01R13/03 , H02B13/02
摘要： PURPOSE: To eliminate the need for cleaning silver powders accumulating in a metal container so as to achieve cost reduction and high reliability by providing a coating layer of a predetermined thickness over the surface of contact of a moving contact, the coating layer being made from silver or a silver alloy with specific powders dispersed therein in a predetermined ratio. CONSTITUTION: The contact shoe 61 of the tulip contact 16 of a gas-insulated switch and the surface of contact of a moving contact 8, for example, are covered with silver composite plating layers 61a, 8a, respectively. By a method in which a dispersant composed of insoluble particles is suspended in a plating bath, uniformly dispersed phases of the particles are formed on the layers 61a, 8a. Powders with average diameters of 1 to 20μm, made from metal oxide, nitride, boride, fluoride and sulfide, carbon, graphite, graphite fluoride, boron, boron nitride and one kind or more of fluororesin, are used as the dispersant. The dispersant is dispersed in the layers 61a, 8a by 0.5 to 60vol.% and into thicknesses of 5 to 200μm. Since powders greater than 100μm in diameter are not produced during switching action, deterioration of insulation performance is avoided.

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