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1. 发明专利

JPS59168377A Apparatus for measuring position of partial discharge generated in cable 失效
标题翻译：测量电缆中部分放电位置的装置
公开(公告)号：JPS59168377A
公开(公告)日：1984-09-22
申请号：JP4377783
申请日：1983-03-15
申请人： Showa Electric Wire & Cable Co Ltd , Tokyo Densetsu Service Kk
发明人： NANBA KATSUAKI , SASAKI NOBUHIRO , AIHARA MITSUGI , EBINUMA YASUMITSU , ENDOU YOSHIKATSU , MUNAKATA KAZUO
IPC分类号： G01R31/12
摘要： PURPOSE: To measure the position of a partial discharge generated in a cable at a high accuracy by memorizing a pulse due to a partial discharge generated therein to perform a computation based on the memory contents.
CONSTITUTION: A series circuit of a capacitor 4 and a detection impedance 5 is connected between a core wire 1a and a shielding body 1b of a cable 1. When a high voltage is applied between the core wire 1a and the shielding body 1b, a plurality of pulses due to a partial discharge detected with the detection impedance 5 is memorized sequentially into a digital memory 8 through an amplifier 6. Then, an arithmetic unit 9 detects difference in the arrival time between first and second pulses from the memory 8 to compute the position of the partial discharge generated based on the difference and the propagation velocity of pulses through the cable 1. Thus, the position of a partial discharge generated can be measured at a high accuracy.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过存储由于其中产生的局部放电而产生的脉冲来高精度地测量在电缆中产生的局部放电的位置，以基于存储器内容执行计算。构成：在芯线1a和电缆1的屏蔽体1b之间连接电容器4和检测阻抗5的串联电路。当在芯线1a和屏蔽体1b之间施加高电压时，多个由于通过检测阻抗5检测到的局部放电的脉冲的脉冲通过放大器6顺序地存储到数字存储器8中。然后，运算单元9检测来自存储器8的第一和第二脉冲之间的到达时间的差异，以计算基于通过电缆1的脉冲的差异和传播速度而产生的局部放电的位置。因此，可以高精度地测量产生的局部放电的位置。

2. 发明专利

JPS59168376A Apparatus for measuring position of partial discharge generated in cable 失效
标题翻译：测量电缆中部分放电位置的装置
公开(公告)号：JPS59168376A
公开(公告)日：1984-09-22
申请号：JP4377683
申请日：1983-03-15
申请人： Showa Electric Wire & Cable Co Ltd , Tokyo Densetsu Service Kk
发明人： NANBA KATSUAKI , SASAKI NOBUHIRO , AIHARA MITSUGI , EBINUMA YASUMITSU , ENDOU YOSHIKATSU , MUNAKATA KAZUO
IPC分类号： G01R31/12 , G01R31/08
摘要： PURPOSE: To measure the position of partial discharge generated in cable at a high accuracy by memorizing a pulse due to a partial discharge generated therein to perform a computation based on the memory contents.
CONSTITUTION: When a high voltage is applied between a core wire 1a and a shielding member 1b of a cable 1, a plurality of pulses due to a partial discharge as detected with an detection impedance 5 is memorized sequentially into a digitial memory 8 through an amplifier 6. Then, an arithmetic unit 9 detects a difference in the arrival time between the rise starting time of the first pulse and the rise starting time of the second pulse based on the voltage value and the arrival time at least at two points of the rising part in the first and second pulses from the memory 8. Subsequently, the position of the partial discharge generated based on the arrival time difference and the propagation velocity of the pulses through the cable 1. Thus, the position of the partial discharge generated can be measured at a high accuracy.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过存储由于其中产生的局部放电而产生的脉冲来高精度地测量电缆中产生的局部放电的位置，以基于存储器内容执行计算。构成：当在电线1的芯线1a和屏蔽构件1b之间施加高电压时，由检测阻抗5检测到的局部放电的多个脉冲通过放大器顺序地存储到数字存储器8中然后，算术单元9至少在上升的两个点处基于电压值和到达时间来检测第一脉冲的上升开始时间和第二脉冲的上升开始时间之间的到达时间之间的差异部分地存储在存储器8的第一和第二脉冲中。随后，基于到达时间差产生的局部放电的位置和脉冲通过电缆1的传播速度。因此，产生的局部放电的位置可以是以高精度测量。

3. 发明专利

JPS59119232A Water leakage detector 失效
标题翻译：水泄漏检测器
公开(公告)号：JPS59119232A
公开(公告)日：1984-07-10
申请号：JP23397182
申请日：1982-12-24
申请人： Showa Electric Wire & Cable Co Ltd , Toshiba Corp , Toshiba Eng Co Ltd
发明人： FUJIMAKI KOUJI , FUKUSHIMA FUMIO , NANBA KATSUAKI , SASAKI NOBUHIRO , KASAHARA TOSHIO
IPC分类号： G01M3/02 , G01M3/16
CPC分类号： G01M3/16
摘要： PURPOSE:To reduce the number of laid conductors and to secure position detection by laying two groups of conductors in combination and connecting sensors. CONSTITUTION:A transistor (TR) 24 for switching are interposed in respective conductors constituting the 1st line group 7, and a bias voltage is applied from an electric power source 22 to their bases through resistances 23. On the other hand, sensors 9 connected to their collector sides are applied at the other-side electrodes with a detection voltage from a terminal 25 through a resistance 26 and the 2d line group 8. Then, the 2nd line group 8 is connected to one gate of each comparator 29 and a voltage for comparison is applied to the other gate through a resistance 28. When a scanning pulse is sent from a pulse oscillator 20 through a TTL open collector 21, the TR24 connected thereto turns on to ground the one electrode of the corresponding sensor 9. At this time, potential variation at the other electrode is detected by the comparator 29 and a receiver 30 decides on which sensor water stuck on.
摘要翻译：目的：通过将两组导体组合放置并连接传感器，减少敷设导体的数量并确保位置检测。构成：用于切换的晶体管（TR）24插入构成第一线组7的相应导体中，并且通过电阻23将电压从电源22施加到其基极。另一方面，连接到它们的集电极侧通过电阻26和2d线组8从端子25被施加到另一侧电极。然后，第二线组8连接到每个比较器29的一个栅极，通过电阻28对另一个栅极进行比较。当通过TTL开路集电极21从脉冲振荡器20发送扫描脉冲时，连接到其上的TR24接通相应传感器9的一个电极的接地。此时，由比较器29检测另一电极的电位变化，并且接收器30判定哪个传感器水被卡住。

4. 发明专利

JPS5979148A Leak sensor for water 失效
标题翻译：漏水传感器水
公开(公告)号：JPS5979148A
公开(公告)日：1984-05-08
申请号：JP19037382
申请日：1982-10-28
申请人： Showa Electric Wire & Cable Co Ltd
发明人： NANBA KATSUAKI , SASAKI NOBUHIRO
IPC分类号： G01M3/18 , G01M3/16 , G01N27/06 , G01N27/07
CPC分类号： G01N27/07
摘要： PURPOSE:To prevent water from being stuck to an electrode and make the constitution small-sized and enhance the mechanical strength, by exposing the prescribed-length electrode from the terminal of a sensor formed by molding plural electric wires with a resin. CONSTITUTION:An electric wire group (12 electric wires) is arranged circularly electrodes 2 which have conduction parts exposed from the terminal of the electric wire group by a length l are molded with the resin while leaving side faces of conduction parts of electric wires as they are, thus forming a sensor 1. Electrodes 2 are so arranged that detecting electrodes 4 and common electrodes 5 are adjacent to each other certainly. The sensor corresponding to a circuit which detects many water leak positions is constituted in this manner; and even if the number of detection points is increased, the number of detecting lines is reduced because of the BCD processing.
摘要翻译：目的：通过将规定长度的电极从通过用树脂成型多根电线形成的传感器的端子露出来，防止水粘附到电极上并使结构小型化并提高机械强度。构成：电线组（12根电线）配置有从电线组的端子露出长度l的导电部分的圆形电极2与树脂一起模制，同时留下电线的导电部分的侧面，因为它们因此形成传感器1.电极2被布置成使得检测电极4和公共电极5彼此相邻。对应于检测许多漏水位置的电路的传感器以这种方式构成; 并且即使检测点的数量增加，由于BCD处理，检测线的数量减少。

5. 发明专利

JP2004020269A METHOD FOR MEASURING tanδ OF CABLE LINE 审中-公开
公开(公告)号：JP2004020269A
公开(公告)日：2004-01-22
申请号：JP2002172932
申请日：2002-06-13
申请人： Showa Electric Wire & Cable Co Ltd , 昭和電線電纜株式会社
发明人： TATEISHI AKITO , SHINAGAWA JUNICHI , SASAKI NOBUHIRO
IPC分类号： G01R31/12
摘要： PROBLEM TO BE SOLVED: To provide a tanδ measuring method for a cable line which enhances workability when tanδ measurement is performed, and increases a degree of freedom of selection of attaching positions for a charging current detecting element and a voltage signal detecting element, by dispensing with one of cables for connecting the charging current detecting element and the voltage signal detecting element to the body of a measuring apparatus.
SOLUTION: A first GPS receiving unit is arranged near the charging current detecting element for the cable line which is single-point-grounded, and the relation between a time signal which this first GPS receiving unit receives and a charging current from the charging current detecting element is found. A second GPS receiving unit is arranged near the voltage detecting element for the cable line, and the relation between a time signal which this second GPS receiving unit receives and a voltage signal from the voltage detecting element is found. On the basis of the time signals, a phase difference between the charging current and the voltage signal at specific time is found, and tanδ of the cable line is found from this phase difference.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2004361103A Eddy current flaw detector 审中-公开
公开(公告)号：JP2004361103A
公开(公告)日：2004-12-24
申请号：JP2003156557
申请日：2003-06-02
申请人： Showa Electric Wire & Cable Co Ltd , Tokyo Electric Power Co Inc:The , 昭和電線電纜株式会社 , 東京電力株式会社
发明人： KANEKO KENJI , SASAKI NOBUHIRO , IKEUCHI SHINOBU , SANO HITOSHI
IPC分类号： G01R33/02 , G01N27/90
摘要： PROBLEM TO BE SOLVED: To detect the damage part of a conductor such as an insulated electric wire for an overhead power distribution, an overhead transmission line or the like.
SOLUTION: The sensor coil L arranged in the periphery of an electric wire 1 to be measured is equipped with a flaw detection coil L10, an exciting coil L20 and a resonating coil L30. The coils L10, L20 and L30 are respectively constituted of upper and lower saddle-shaped flaw detection coils L10a and L10b, upper and lower saddle-shaped exciting coils L20a and L20b, and upper and lower saddle shaped resonating coils L30a and L30b and arranged on the outer surface of the electric wire 1 to be measured in opposed relationship so as to surround the electric wire 1 to be measured. These flaw detection coil L10, exciting coil L20 and resonating coil L30 are constituted as one set comprising three coils. A resonance circuit having a condenser, an amplifier, a variable resistor or the like is connected to the resonating coil L30 and the variable resistor in the resonance circuit is preliminarily adjusted so that the resonance circuit is operated when a current exceeding a threshold value flows through the resonating coil L30 or a voltage exceeding a threshold value is generated in the resonating coil L30.
COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JPS59155771A Flash-over display 失效
标题翻译：闪光显示
公开(公告)号：JPS59155771A
公开(公告)日：1984-09-04
申请号：JP3051083
申请日：1983-02-25
申请人： Showa Electric Wire & Cable Co Ltd
发明人： KUSANO TETSUO , SHINODA TSUGIO , SASAKI NOBUHIRO
IPC分类号： H02H3/22 , G01R31/02
摘要： PURPOSE: To secure the discovery of a lightning accident or the like by lighting a display lamp when a thunderbolt hits an aerial ground wire or the like.
CONSTITUTION: When a thunderbolt hits an aerial ground wire 1, a large lightning current I flows to cause a magnetic flux 4 and an induced voltage is generated in a coil 2 set in the vicinity thereof. As the voltage at the output terminal of an amplifier 10 rises higher than the reference voltage, the voltage at the output terminal of a comparator 13 moves to a low level and a flip flop circuit 14 is set, bringing the voltage at the Q output terminal to a high level. This turns ON a switching transistor 16 and a current flows from a power source 18 to light a display lamp 17.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过在雷电撞到空中接地线等时点亮显示灯，确保发现雷电事故等。构成：当雷电撞到天线地线1时，大的雷电电流I流过，引起磁通4，并且在其附近设置的线圈2中产生感应电压。当放大器10的输出端的电压上升到高于参考电压时，比较器13的输出端的电压移动到低电平，触发电路14被置位，使得Q输出端达到高水平。这将导通开关晶体管16，并且电流从电源18流到点亮显示灯17。

8. 发明专利

JPS60231180A LOCALIZATION OF PARTIAL DISCHARGE GENERATING POSITION FOR POWER CABLE 失效
公开(公告)号：JPS60231180A
公开(公告)日：1985-11-16
申请号：JP8813984
申请日：1984-05-01
申请人： TOKYO DENSETSU SERVICE KK , SHOWA ELECTRIC WIRE & CABLE CO
发明人： SAKAGUCHI RIYUUJI , MUNAKATA KAZUO , AIHARA MITSUGI , EBINUMA YASUMITSU , NAGAOKA AKIRA , NANBA KATSUAKI , SASAKI NOBUHIRO
IPC分类号： G01R31/08
摘要： PURPOSE:To enable the localization of discharge generating position even at the installation place where extraneous noises are large by iputting partial discharge pulses and extraneous noises in parallel into an arithmetic unit to generate a phase between both the inputs through a delay means so that the extraneous noises alone will be removed. CONSTITUTION:A high DC voltage is applied to a measuring terminal 1a of a cable 1 to be measured to generate partial discharge pulses at a deteriorated part X. One part of the partial discharge pulses are inputted into a differential amplifier 6 through a measuring terminal 1a and a detection impedance 3 while the other part thereof are inputted into a differential amplifier 6' through a distant terminal 1b, another cable 4 to be measured, a measuring terminal 4a and a detection impedance 3. On the other hand, extraneous noises are inputted into the differential amplifiers 6 and 6' through delay lines 7 and 7' from a measuring terminal 5a of a noise comparison cable 5 to offset the extraneous noise components. Then, a position localizer 8 converts partial discharge pulses digitally to memorize and calculates a discharge position from the time difference in pulses.

9. 发明专利

JPS60100061A APPARATUS FOR MEASURING PARTIAL DISCHARGE GENERATING POSITION OF CABLE 失效
公开(公告)号：JPS60100061A
公开(公告)日：1985-06-03
申请号：JP20806583
申请日：1983-11-04
申请人： SHOWA ELECTRIC WIRE & CABLE CO , TOKYO DENSETSU SERVICE KK
发明人： NANBA KATSUAKI , SASAKI NOBUHIRO , AIHARA MITSUGI , EBINUMA YASUMITSU , ENDOU YOSHIKATSU , MUNAKATA ICHIROU
IPC分类号： G01R31/12 , G01B15/00 , G01S13/06 , G01S13/08
摘要： PURPOSE:To measure the partial discharge generating position of a cable without generating a measuring error, by determining direct wave arrival time difference by a measuring cable and an auxiliary cable connected to said cable at the other terminal through a coupling condenser and having the same standard and length as said cable. CONSTITUTION:The other terminal of a main cable 1 equipped with a joint 8, across which impedance changes, is connected to an auxiliary cable 9 having the same standard and length as the main cable 1 through a coupling condenser 10. When high voltage is applied to the core wire 1a and the insulator 1b of the cable 1 from one terminal thereof, partial discharge is generated at the dielectric breakdown point A between said one terminal and the joint 8 and the high voltage pulse reflected from the point A directly reaches to said one terminal at first and detected through a condenser 4, a detection impedance 5 and an amplifier 6 and memory 14 is triggered. In addition, the direct wave corresponding to the reflective wave from the other terminal of the cable 1 through the cable 9 is detected through an amplifier 13 and stored in the memory 14 and the measurement of a partial discharge position without a measuring error is performed on the basis of the detection time interval of both direct waves without exerting influence upon the reflective wave from the joint 8.

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