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    • 1. 发明专利
    • Partial discharge detection sensor for gis, and insulation abnormality monitoring system using this
    • 用于地理信息系统的部分放电检测传感器,以及使用此绝缘不正常监测系统
    • JP2007232496A
    • 2007-09-13
    • JP2006052960
    • 2006-02-28
    • Mitsubishi Electric CorpTokyo Electric Power Co Inc:The三菱電機株式会社東京電力株式会社
    • TSURIMOTO TAKAOYOSHIMURA MANABUMUTO HIROTAKANISHIDA CHIEKOKAMEI MITSUHITOOKABE NARIMITSUKANEKO SHUHEI
    • G01R31/12
    • PROBLEM TO BE SOLVED: To provide a partial discharge detection sensor for GIS for sensitively detecting components from low frequency to high frequency of electromagnetic wave generated by partial discharge.
      SOLUTION: The partial discharge detection sensor for GIS stores a high voltage section on the center axis and detects partial discharge occurring in a metal vessel constituted by a plurality of tanks integrated via an insulating spacer. The partial discharge detection sensor for GIS has a first wire whose tip is electrostatically coupled to the outer peripheral surface of a flange of one of the tanks gripping the spacer, and a second wire whose tip is electrostatically coupled to the outer peripheral surface of a flange of the other of the tanks gripping the spacer. The partial discharge detection sensor detects potential difference between the flange of one tank and the flange of the other tank induced by electromagnetic wave occurring following the partial discharge, and detects the partial discharge by receiving the electromagnetic wave leaking from the spacer.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供一种用于灵敏地检测从局部放电产生的电磁波的低频到高频的分量的用于GIS的局部放电检测传感器。 解决方案:用于GIS的局部放电检测传感器在中心轴上存储高压部分,并且检测在由经由绝缘间隔件集成的多个箱体构成的金属容器中发生的局部放电。 用于GIS的局部放电检测传感器具有第一导线,其尖端静电耦合到夹持间隔件的一个壳体的凸缘的外周表面,以及第二导线,其尖端静电耦合到凸缘的外周表面 的另一个坦克夹紧间隔件。 局部放电检测传感器检测一个罐的凸缘与由局部放电之后发生的电磁波引起的另一个罐的凸缘之间的电位差,并且通过接收从间隔件泄漏的电磁波来检测局部放电。 版权所有(C)2007,JPO&INPIT
    • 2. 发明专利
    • Method and apparatus for determining partial discharge
    • 用于确定部分放电的方法和装置
    • JP2006266820A
    • 2006-10-05
    • JP2005084305
    • 2005-03-23
    • Mitsubishi Electric CorpTokyo Electric Power Co Inc:The三菱電機株式会社東京電力株式会社
    • NISHIDA CHIEKOKAMEI MITSUHITOOKABE NARIMITSUKANEKO SHUHEIMUTO HIROTAKAYOSHIMURA MANABU
    • G01R31/12H02B13/065H02G5/06
    • G01R31/1254
    • PROBLEM TO BE SOLVED: To precisely determine the presence or absence of partial discharges which occur in a gas-insulated apparatus by excluding the effects of extraneous noise. SOLUTION: The gas-insulated apparatus is constituted by partitioning, by an insulation spacer 2, a cylindrical metal tank 1 in which insulation gas is sealed and supporting a central conductor 3 by the insulation spacer 2. In this method for determining the presence or absence of partial discharges which occur in the metal tank 1 of the gas-insulated apparatus, signals of a frequency band through which only TE11 mode can propagate are extracted by a TE11 detector 8 from electromagnetic-wave signals detected by electromagnetic-wave signal detectors 4 at a plurality of locations in the circumferential direction of an outer circumference of the insulation spacer 2. An intensity distribution of outer circumferential electromagnetic waves of the metal tank 1 is acquired by a detection device 10 on the basis of the intensity of extracted signals and circumferential measuring location information and compared with a distribution characteristic of the TE11 mode to determine the presence or absence of partial discharges by the determination device 11. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过排除外来噪声的影响,精确地确定在气体绝缘设备中发生的局部放电的存在或不存在。 解决方案:气体绝缘设备由绝缘间隔件2分隔成绝缘气体被密封并由绝缘隔离物2支撑中心导体3的圆筒形金属罐1构成。在该方法中, 在气体绝缘设备的金属罐1中存在或不存在仅由TE11模式传播的频带的信号由TE11检测器8从电磁波信号检测的电磁波信号中提取出来 检测器4在绝缘隔离物2的外周的周向的多个位置处。金属罐1的外周电磁波的强度分布由检测装置10基于提取的信号的强度获取 和圆周测量位置信息,并与TE11模式的分布特性进行比较,以确定存在或 确定装置11没有部分放电。版权所有(C)2007,JPO&INPIT
    • 5. 发明专利
    • Gas insulated electric apparatus
    • 气体绝缘电器
    • JP2013230062A
    • 2013-11-07
    • JP2012102067
    • 2012-04-27
    • Mitsubishi Electric Corp三菱電機株式会社
    • YOSHIMURA MANABUMIYAMOTO TAKASHIKAINAGA SOICHIROMORI TAKESHI
    • H02G5/06H02B13/02
    • PROBLEM TO BE SOLVED: To provide a gas insulated electric apparatus which allows for enhancement in the insulation reliability of an apparatus by relaxing electric field concentration.SOLUTION: The gas insulated electric apparatus includes a closed container constituted by coupling metal flanges at both ends thereof and internally filled with insulating gas, a high voltage conductor disposed in the closed container, an insulation spacer insulating and supporting the high voltage conductor on one side and having the other side disposed between the coupling flanges, a sealing groove formed in the insulation spacer facing the coupling flange and sealing the insulating gas, an O-ring applied to the sealing groove, and a conductive coating formed on the inner surface of the sealing groove and having the same potential as that of the coupling flange.
    • 要解决的问题:提供一种气体绝缘电气设备,其通过放松电场浓度来提高设备的绝缘可靠性。解决方案:气体绝缘电气设备包括:密封容器,其由两端连接金属凸缘和 内部填充有绝缘气体,设置在密闭容器中的高压导体,绝缘间隔件,其绝缘并在一侧上支撑高压导体,并且另一侧设置在联接凸缘之间;密封槽,形成在绝缘垫片中,面向 连接凸缘并密封绝缘气体,施加到密封槽的O形环和形成在密封槽的内表面上并具有与联接凸缘相同的电位的导电涂层。
    • 6. 发明专利
    • Gas-insulated switchgear
    • 气体绝缘开关
    • JP2010252601A
    • 2010-11-04
    • JP2009101933
    • 2009-04-20
    • Mitsubishi Electric Corp三菱電機株式会社
    • YOSHIMURA MANABUTSURIMOTO TAKAOKISANUKI OSAMUSHIMIZU YOSHINORI
    • H02B13/055H02B13/02H02G5/06
    • H02B13/0356
    • PROBLEM TO BE SOLVED: To obtain a gas-insulated switchgear, for preventing degradation of insulating performance by restricting the behavior of foreign metallic particles.
      SOLUTION: The gas-insulated switchgear includes a high-voltage conductor 2 accommodated within a grounded tank 1 in which an insulating gas is filled to be sealed, a current transformer 12 which is accommodated within the grounded tank 1, and includes a coil 5 annularly arranged around the high-voltage conductor 2, an electric field relax shield 6 arranged on the inner surface side of the coil 5, and insulating covers 9a, 9b as dielectric insulating members arranged at the end of the electric field relax shield 6.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了获得气体绝缘开关装置,用于通过限制外来金属颗粒的行为来防止绝缘性能的劣化。 解决方案:气体绝缘开关装置包括容纳在接地箱1内的高压导体2,绝缘气体被填充到其中被密封,容纳在接地箱1内的电流互感器12, 围绕高压导体2环形排列的线圈5,布置在线圈5的内表面侧的电场松弛屏蔽6,以及绝缘盖9a,9b,其布置在电场松弛屏蔽6的末端 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • 回転電機
    • 旋转电机
    • JP2014217109A
    • 2014-11-17
    • JP2013090376
    • 2013-04-23
    • 三菱電機株式会社Mitsubishi Electric Corp
    • UMEMOTO TAKAHIROYOSHIMURA MANABUNADA TAKASHITSUKIJI MAKOTO
    • H02K3/40H02K3/34
    • H02K3/34H02K3/40
    • 【課題】コイル導体の周囲にマイカテープを巻回させて形成される対地主絶縁層において、通常運転時の絶縁耐力を維持しつつ、コイルの冷却性能を向上させた回転電機を提供する。【解決手段】固定子鉄心4に形成されたスロット5内に収納されるとともにその一部がスロット5の外部に延出された固定子コイル7を備え、この固定子コイル7は、コイル導体9の外周部にマイカテープ11を巻回して対地主絶縁層12が形成されており、マイカテープ11は、コイル導体9がスロット5の内部から外部に延出された部分の内、スロット5の出口から所定の長さL分はスロット5内部における巻回数と同じ巻回数で一律に巻回され、所定長さL分を除くコイル導体9の延出側に向けては巻回数が低減されてその断面積が縮小されている。【選択図】図2
    • 要解决的问题:提供一种提高线圈的冷却性能的旋转电机,同时通过将云母带缠绕在线圈导体周围形成的接地主绝缘层中保持正常操作期间的绝缘强度。解决方案:旋转 电机包括定子线圈7,该定子线圈7容纳在形成在定子芯4中的槽5中,并且其一部分延伸到槽5的外部。在定子线圈7中,通过将云母带11卷绕而形成接地主绝缘层12 线圈导体9的周边。在线圈导体9延伸的部分中,从狭槽5的出口以与槽5中的卷绕数相同的卷绕数量均匀地卷绕预定长度L的云母带11 从槽5的内侧向外侧延伸。除了规定长度L以外的线圈导体9的延伸侧,卷绕数减少,交叉面积减小。
    • 9. 发明专利
    • ガス絶縁開閉装置
    • 气体绝缘开关
    • JP2014207742A
    • 2014-10-30
    • JP2013082907
    • 2013-04-11
    • 三菱電機株式会社Mitsubishi Electric Corp
    • MIYAMOTO TAKASHIYOSHIMURA MANABUSADAKUNI HITOSHI
    • H02B13/02H02B13/055
    • 【課題】接地部材と絶縁スペーサとの接合部での部分放電の導体部材側への進展を抑制することにより、放電に起因する接地部材と接地部材内の導体部材との短絡を抑制することが可能な開閉部を有するガス絶縁開閉装置を得ることである。【解決手段】容器状の接地部材5Aと、接地部材5A内の導体部材8と、接地部材5A内において導体部材8を支持する絶縁スペーサ9と、接地部材5A内を充填する絶縁ガス5Bと、放電光遮光板30とを備える。放電光遮光板30は、接地部材5Aと絶縁スペーサ9との接続部59の近傍JCにおいて接地部材5Aと絶縁スペーサ9との双方と接触し、かつ接続部59の近傍JCから絶縁スペーサ9の沿面に接触しながら導体部材8の配置される方向に延びる。【選択図】図3
    • 要解决的问题:为了提供一种具有开关部分的气体绝缘开关装置,其能够通过抑制局部放电的进行来抑制由于放电而导致的接地部件和接地部件中的导体部件的短路, 接地部件和绝缘间隔件的导体部件8和导体部件侧的绝缘间隔件。绝缘开关装置包括:容器状接地部件5A,接地部件5A中的导体部件8, 8,在接地构件5A中,填充接地构件5A的绝缘气体5B和放电遮光板30.放电遮光板30在连接的JC附近与接地构件5A和绝缘间隔件9接触 并且在与绝缘隔离物9的蠕变保持接触的同时,从连接部59的附近JC沿导体部件8的排列方向延伸。
    • 10. 发明专利
    • Gas-insulated electrical apparatus
    • 气体绝缘电气设备
    • JP2014150630A
    • 2014-08-21
    • JP2013017361
    • 2013-01-31
    • Mitsubishi Electric Corp三菱電機株式会社
    • KAINAGA SOICHIROYOSHIMURA MANABUMIYAMOTO TAKASHITSURIMOTO TAKAO
    • H02B13/055H02B13/02H02G5/06
    • PROBLEM TO BE SOLVED: To provide a gas-insulated electrical apparatus having high insulation reliability, in which a break in an insulation coating does not become a weak point of insulation, even if there is a foreign matter anywhere in a conductive container.SOLUTION: A gas-insulated electrical apparatus 20 includes a ground tank 21, a central conductor 22, and insulation coatings 23 and 24. In the axial direction of the central conductor 22, the minimum value of a distance between a break 25, i.e., the container side connection of an adjacent container side insulation coating part, and a break 26, i.e., the conductor side connection of an adjacent conductor side insulation coating part, is two times or more than the gas insulation distance g, i.e., the distance between the container side insulation coating and the conductor side insulation coating.
    • 要解决的问题:为了提供绝缘可靠性高的气体绝缘电气设备,其中绝缘涂层的断裂不会成为绝缘的弱点,即使导电性容器中存在异物也是如此。解决方案: 气体绝缘电气设备20包括接地槽21,中心导体22和绝缘涂层23和24.在中心导体22的轴向方向上,断路25之间的距离的最小值即容器 相邻容器侧绝缘涂层部分的侧面连接以及相邻导体侧绝缘涂层部分的导体侧连接的断裂26是气体绝缘距离g的两倍或更多,即容器之间的距离 侧绝缘涂层和导体侧绝缘涂层。