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11. 发明专利

JPS54121942A GAS INSULATOR MONITOR 失效
公开(公告)号：JPS54121942A
公开(公告)日：1979-09-21
申请号：JP2947678
申请日：1978-03-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIOKA AKIYOSHI , NAKANISHI KOUICHIROU , NITSUTA TOUHEI
IPC分类号： H02B13/02 , H02H5/00
摘要： PURPOSE:To read the degradation of a high voltage conductor supporting insulating spacer with high accuracy and avoid creeping tracking failure by monitoring the failure using a photoelectric converter and a measuring means which is connected to its output end through a measuring window. CONSTITUTION:For example, the arc light at the cut-off of the breaker 5 is prevented from being directly incident on the photoelectric converter 7 through the front shutter 8 of the dark room 15 enclosing the photoelectric converter 7. Sulfuric gas hexafluoride is also prevented from being leaked by the acrylic plate 14. The partial discharge emission generated when the surface leak resistance of the supporting insulating spacer 3 decreases remarkbly is observed by opening the shutter with the driving unit 9. The output signal of the photoelectric converter 7 with a photoelectric multiplier which is driven by a DC power source is measured by the micro- potentiometer 11 or synchroscope 12 and observed for a long period of time by connecting the recorder 13 to the micro-potentiometer 11.

12. 发明专利

JPS619113A Electric insulator 失效
标题翻译：电绝缘子
公开(公告)号：JPS619113A
公开(公告)日：1986-01-16
申请号：JP12696184
申请日：1984-06-20
申请人： Mitsubishi Electric Corp
发明人： HONDA YOSHIKATSU , YOSHIOKA AKIYOSHI
IPC分类号： H02B13/02 , H02G5/06 , H02G5/08

13. 发明专利

JPS60122909A LIGHT GUIDE FOR HIGH VOLTAGE 失效
公开(公告)号：JPS60122909A
公开(公告)日：1985-07-01
申请号：JP23093883
申请日：1983-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIOKA AKIYOSHI , YOSHIZUMI TOSHIAKI
IPC分类号： C03C25/10 , G02B6/00 , G02B6/44
摘要： PURPOSE:To make it possible to prevent concentration of voltage near metallic supports by constituting the sheath part of a light guide in such a way that the insulation resistance thereof is relatively smaller than the insulation resistance of the other constitution parts. CONSTITUTION:The core part 1 of a light guide is constituted of multi-component glass or quartz and silicone as well as nylon and a buffer material part 7 is constituted of glass yarn. A sheath part 3 is constituted of PVC or polyester elastomer. The sheath part 3 is so constituted that the insulation resistance thereof is made relatively smaller than the insulation resistance of the other constituting members by which the concentration of the voltage near metalic supports 4, 5 is prevented.

14. 发明专利

JPS60121957A HIGH VOLTAGE THYRISTOR CONVERTER 失效
公开(公告)号：JPS60121957A
公开(公告)日：1985-06-29
申请号：JP22852483
申请日：1983-12-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIZUMI TOSHIAKI , YOSHIOKA AKIYOSHI
IPC分类号： H02M1/092
摘要： PURPOSE:To improve the reliability and the maintainability of a thyristor converter by using a laser beam as transmitting means of a gate signal of a thyristor converter. CONSTITUTION:A control signal of a laser beam 3 outputted from a converter 1 which receives an operation command is transmitted through a cable 7 to a laser beam radiator 2. The beam 3 emitted from the radiator 2 is distributed to thyristor module SM by a translucent mirror 6 provided at part of the module SM and adjustable at the mounting angle. The distributed beam is converted into an electric signal by a photoreceptor 4 provided substantially horizontally in the module SM to control the thyristor in the module.

15. 发明专利

JPS54164273A INSULATING SPACER 失效
公开(公告)号：JPS54164273A
公开(公告)日：1979-12-27
申请号：JP7469978
申请日：1978-06-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： FUJIWARA YUKIO , YOSHIOKA AKIYOSHI , SHIBUYA GIICHI
IPC分类号： H02G5/06

16. 发明专利

JPS6115511A Electric insulator 失效
公开(公告)号：JPS6115511A
公开(公告)日：1986-01-23
申请号：JP13287384
申请日：1984-06-29
申请人： Mitsubishi Electric Corp
发明人： HONDA YOSHIKATSU , YOSHIOKA AKIYOSHI
IPC分类号： H02B13/02 , H02G5/06
CPC分类号： H02G5/066

17. 发明专利

JPS60122910A LIGHT GUIDE FOR HIGH VOLTAGE 失效
公开(公告)号：JPS60122910A
公开(公告)日：1985-07-01
申请号：JP23093983
申请日：1983-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIOKA AKIYOSHI , YOSHIZUMI TOSHIAKI
IPC分类号： G02B6/00 , G02B6/44
摘要： PURPOSE:To equalize a voltage share of each part of a light guide, and to prevent a drop of a creeping flashover voltage by winding a semiconductive member having an insulation resistance which is lower than the light guide, to the outside circumference of the light guide. CONSTITUTION:A semiconductive tape being a semiconductive member 5 whose insulation resistance is lower by 1-3 digits or so than a light guide 1 is wound spirally to the outside circumference of a lot of light guides 1, and connected electrically to supporting metallic fittings 2, 3. According to such a constitution, in case when a DV voltage is applied to the light guide 1, the greater part of a leakage current flows to the tape 5, therefore, the light guide itself exists as an insulator of a high resistance. Accordingly, a voltage share of each part of the light guide is equalized irrespective of a constituting material quality of each part of the light guide, and also a drop of a creeping flashover voltage can be prevented.

18. 发明专利

JPS60122908A LIGHT GUIDE FOR HIGH VOLTAGE 失效
公开(公告)号：JPS60122908A
公开(公告)日：1985-07-01
申请号：JP23093783
申请日：1983-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIOKA AKIYOSHI , HONDA YOSHIKATSU
IPC分类号： G02B6/00 , G02B6/44
摘要： PURPOSE:To equalize a voltage share of each part of a light guide, and to prevent a drop of a creeping flashover voltage by providing a resistor having an insulation resistance which is lower than the light guide, and connecting a supporting part and a middle position of the light guide to the resistor. CONSTITUTION:A resistor 7 having a resistance value which is lower than by 1-3 digits or so than an insulation resistance of a light guide 10 is provided, and supporting metallic fittings 4, 5 and a middle position of the light guide 10 are connected electrically by connecting metallic fittings 8, 9. According to such a constitution, in case when a DC voltage is applied to the light guide 10, the greate part of a leakage current flows to the resistor 7, the light guide 10 exists as an insulator of a high resistance, a voltage distribution of the creeping direction is equalized, and a concentration of a voltage in the vicinity of the supporting metallic fittings 4, 5 is softened. Therefore, a voltage share of each part of the light guide is equalized, and a drop of a creeping flashover voltage can be prevented.

19. 发明专利

JPS60121963A HIGH VOLTAGE THYRISTOR CONVERTER 失效
公开(公告)号：JPS60121963A
公开(公告)日：1985-06-29
申请号：JP22852583
申请日：1983-12-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIZUMI TOSHIAKI , YOSHIOKA AKIYOSHI
IPC分类号： H01L25/10 , H01L25/18 , H02M1/092 , H02M7/155
摘要： PURPOSE:To improve the reliability and the maintainability of a thyristor converter by using a laser beam and a reflecting mirror as transmitting means of a gate signal of a thyristor converter. CONSTITUTION:A control signal of a laser beam 3 outputted from a converter 1 which receives an operation command is transmitted through a cable 7 to a laser beam radiator 2. The beam 3 emitted from the radiator 2 is altered in the direction of an optical path 3a by a reflecting mirror 6 provided at part of the module SM and adjustable at the mounting angle. The beam 3 is converted into an electric signal by a photoreceptor 4 provided substantially horizontally in the module SM to control the thyristor in the module.

20. 发明专利

JPS60121956A HIGH VOLTAGE THYRISTOR CONVERTER 失效
公开(公告)号：JPS60121956A
公开(公告)日：1985-06-29
申请号：JP22852383
申请日：1983-12-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIZUMI TOSHIAKI , YOSHIOKA AKIYOSHI
IPC分类号： H02M1/092
摘要： PURPOSE:To transmit a signal in noncontacting state with a signal converter provided at the ground potential level in the drive control of a thyristor module by using a laser beam as transmitting means of a gate signal of a thyristor converter. CONSTITUTION:A control signal of a laser beam 3 outputted from a converter 1 which receives an operation command is transmitted through a cable 7 to a laser beam radiator 2. A receiver 4 which receives the laser beam and converts it into an electric signal is associated in a thyristor module SM. The radiator 2 and the converter 1 are disposed at the ground potential level, and used in noncontacting state with the high voltage unit of the module SM. Thus, the reliability and the maintainability can be improved.

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