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    Oil immersed electrical apparatus
    3.
    发明授权
    Oil immersed electrical apparatus 有权
    油浸式电气设备

    公开(公告)号：US08305179B2

    公开(公告)日：2012-11-06

    申请号：US12999919

    申请日：2008-09-26

    申请人： Eiichi Nagao ,  Kentaro Taninouchi ,  Noboru Hosokawa ,  Tsuyoshi Amimoto ,  Kozo Tachibana ,  Takanori Sone ,  Junji Tanimura ,  Satoru Toyama

    发明人： Eiichi Nagao ,  Kentaro Taninouchi ,  Noboru Hosokawa ,  Tsuyoshi Amimoto ,  Kozo Tachibana ,  Takanori Sone ,  Junji Tanimura ,  Satoru Toyama

    IPC分类号： H01F27/10 ,  H01H31/12

    CPC分类号： H01F27/14 ,  G01N33/287 ,  H01F27/402

    摘要： An oil immersed electrical apparatus such as an oil immersed transformer that can detect copper sulfide precipitated on coil insulating paper is provided. In the oil immersed transformer in which a coil with its surface covered by insulating paper is arranged in a container filled with insulating oil, a detection member is prepared by providing two electrodes on a surface of a plate-like pressboard formed of cellulose, which is a same material as that of the insulating paper, this detection member is arranged in contact with the insulating oil, and generation of copper sulfide is detected from reduction in a surface resistance between the electrodes. The temperature of the detection member is set higher than the temperature of the coil so that copper sulfide is generated thereon prior to generation of copper sulfide on a coil unit.

    摘要翻译： 提供了一种油浸式电气设备，例如可以检测在线圈绝缘纸上析出的硫化铜的油浸变压器。 在将其表面被绝缘纸覆盖的线圈布置在填充有绝缘油的容器中的油浸变压器中，通过在由纤维素形成的板状压板的表面上设置两个电极来制备检测构件，该电极为 与绝缘纸相同的材料，该检测部件被布置成与绝缘油接触，并且通过降低电极之间的表面电阻来检测硫化铜的产生。 检测部件的温度被设定为高于线圈的温度，使得在线圈单元上产生硫化铜之前产生硫化铜。

    OIL IMMERSED ELECTRICAL APPARATUS
    4.
    发明申请
    OIL IMMERSED ELECTRICAL APPARATUS 有权
    油电设备

    公开(公告)号：US20110090034A1

    公开(公告)日：2011-04-21

    申请号：US12999919

    申请日：2008-09-26

    申请人： Eiichi Nagao ,  Kentaro Taninouchi ,  Noboru Hosokawa ,  Tsuyoshi Amimoto ,  Kozo Tachibana ,  Takanori Sone ,  Junji Tanimura ,  Satoru Toyama

    发明人： Eiichi Nagao ,  Kentaro Taninouchi ,  Noboru Hosokawa ,  Tsuyoshi Amimoto ,  Kozo Tachibana ,  Takanori Sone ,  Junji Tanimura ,  Satoru Toyama

    IPC分类号： H01F27/10

    CPC分类号： H01F27/14 ,  G01N33/287 ,  H01F27/402

    摘要： An oil immersed electrical apparatus such as an oil immersed transformer that can detect copper sulfide precipitated on coil insulating paper is provided. In the oil immersed transformer in which a coil with its surface covered by insulating paper is arranged in a container filled with insulating oil, a detection member is prepared by providing two electrodes on a surface of a plate-like pressboard formed of cellulose, which is a same material as that of the insulating paper, this detection member is arranged in contact with the insulating oil, and generation of copper sulfide is detected from reduction in a surface resistance between the electrodes. The temperature of the detection member is set higher than the temperature of the coil so that copper sulfide is generated thereon prior to generation of copper sulfide on a coil unit.

    摘要翻译： 提供了一种油浸式电气设备，例如可以检测在线圈绝缘纸上析出的硫化铜的油浸变压器。 在将其表面被绝缘纸覆盖的线圈布置在填充有绝缘油的容器中的油浸变压器中，通过在由纤维素形成的板状压板的表面上设置两个电极来制备检测构件，该电极为 与绝缘纸相同的材料，该检测部件被布置成与绝缘油接触，并且通过降低电极之间的表面电阻来检测硫化铜的产生。 检测部件的温度被设定为高于线圈的温度，使得在线圈单元上产生硫化铜之前产生硫化铜。

    DIAGNOSIS METHOD AND DIAGNOSIS APPARATUS FOR OIL-FILLED ELECTRICAL APPARATUS
    5.
    发明申请
    DIAGNOSIS METHOD AND DIAGNOSIS APPARATUS FOR OIL-FILLED ELECTRICAL APPARATUS 审中-公开
    油封电气设备诊断方法及诊断装置

    公开(公告)号：US20130034909A1

    公开(公告)日：2013-02-07

    申请号：US13640509

    申请日：2011-05-10

    申请人： Satoru Toyama ,  Junji Tanimura ,  Fukutaro Kato ,  Tsuyoshi Amimoto ,  Eiichi Nagao ,  Takeshi Kawashima ,  Noboru Hosokawa

    发明人： Satoru Toyama ,  Junji Tanimura ,  Fukutaro Kato ,  Tsuyoshi Amimoto ,  Eiichi Nagao ,  Takeshi Kawashima ,  Noboru Hosokawa

    IPC分类号： G01N33/20 ,  G01N31/00

    CPC分类号： H01F27/14 ,  G01N33/287 ,  H01F27/402 ,  Y10T436/182 ,  Y10T436/203332

    摘要： Provided is a diagnosis method for an oil-filled electrical apparatus, which is for evaluating the degree of danger of copper sulfide being generated within the oil-filled electrical apparatus, comprising: a first step for detecting a specific compound contained within insulating oil inside the oil-filled electrical apparatus; a second step for evaluating the possibility of copper sulfide being generated inside the oil-filled electrical apparatus, on the basis of the result detected by the first step; and a third step for diagnosing the degree of danger of a malfunction occurring in the oil-filled electrical apparatus, on the basis of the evaluation result obtained in the second step. The specific compound contains dibenzyl disulfide and/or a reaction product of a radical resulting from dibenzyl disulfide, and di-tert-butyl-p-cresol and/or a reaction product of a radical resulting from di-tert-butyl-p-cresol, or, di-tert-butyl-phenol and/or a reaction product of a radical resulting from di-tert-butyl-phenol.

    摘要翻译： 提供了一种用于评估在充油电气设备内产生的硫化铜的危险程度的充油电气设备的诊断方法，包括：第一步骤，用于检测包含在绝缘油内的特定化合物 充油电器; 基于由第一步骤检测到的结果，评估在充油电气设备内部产生硫化铜的可能性的第二步骤; 以及第三步骤，用于基于在第二步骤中获得的评估结果来诊断在充油电气设备中发生故障的危险程度。 具体化合物含有二苄基二硫化物和/或由二苄基二硫醚产生的自由基的反应产物和二叔丁基对甲酚和/或由二叔丁基对甲酚产生的自由基的反应产物 ，或二叔丁基苯酚和/或由二叔丁基苯酚产生的自由基的反应产物。

    ELECTRIC INSULATING OIL INSPECTION METHOD, ELECTRIC INSULATING OIL TREATMENT METHOD, AND OIL-FILLED ELECTRIC DEVICE MAINTENANCE METHOD
    9.
    发明申请
    ELECTRIC INSULATING OIL INSPECTION METHOD, ELECTRIC INSULATING OIL TREATMENT METHOD, AND OIL-FILLED ELECTRIC DEVICE MAINTENANCE METHOD 有权
    电绝缘油检查方法，电绝缘油处理方法和油封电气维护方法

    公开(公告)号：US20130134367A1

    公开(公告)日：2013-05-30

    申请号：US13816261

    申请日：2010-12-13

    申请人： Fukutaro Kato ,  Eiichi Nagao ,  Tsuyoshi Amimoto ,  Satoru Toyama ,  Kota Mizuno

    发明人： Fukutaro Kato ,  Eiichi Nagao ,  Tsuyoshi Amimoto ,  Satoru Toyama ,  Kota Mizuno

    IPC分类号： G01N33/28

    CPC分类号： G01N33/2835 ,  G01N33/287

    摘要： The present invention relates to an electric insulating oil inspection method for determining whether or not an inhibitor-consuming substance is present in an electric insulating oil. The inhibitor-consuming substance is such a substance that causes to decrease over time a concentration of an inhibitor which is added to the electric insulating oil to inhibit copper sulfide from being generated on an insulating paper immersed in the electric insulating oil. The electric insulting oil inspection method includes steps of: preserving the electric insulating oil at a predetermined condition, measuring a concentration of the inhibitor, and determining that the inhibitor-consuming substance is present upon condition that a decrement of the concentration of the inhibitor relative to an initial concentration of the inhibitor becomes not less than a specified amount within a predetermined period.

    摘要翻译： 电绝缘油检测方法技术领域本发明涉及用于确定电绝缘油中是否存在抑制剂消耗物质的电绝缘油检查方法。 抑制消耗物质是这样一种物质，其随着时间的推移降低了添加到电绝缘油中的抑制剂的浓度，以抑制在浸入电绝缘油中的绝缘纸上产生硫化铜。 电绝缘油检查方法包括以下步骤：在预定条件下保存电绝缘油，测量抑制剂的浓度，并确定抑制剂消耗物质存在的条件是抑制剂的浓度相对于 抑制剂的初始浓度在预定时间内变得不小于规定量。

    METHOD OF PREDICTING PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRICAL DEVICE
    10.
    发明申请
    METHOD OF PREDICTING PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRICAL DEVICE 审中-公开
    油填充电气装置中异常现象的可靠性预测方法

    公开(公告)号：US20120197559A1

    公开(公告)日：2012-08-02

    申请号：US13501141

    申请日：2009-12-24

    申请人： Eiichi Nagao ,  Tsuyoshi Amimoto ,  Fukutaro Kato ,  Noboru Hosokawa ,  Kota Mizuno

    发明人： Eiichi Nagao ,  Tsuyoshi Amimoto ,  Fukutaro Kato ,  Noboru Hosokawa ,  Kota Mizuno

    IPC分类号： G01R31/00 ,  G06F19/00

    CPC分类号： G01N33/287 ,  H01F27/402

    摘要： The present invention is a method of predicting the probability of abnormality occurrence in an oil-filled electrical device, including the steps of: measuring a residual dibenzyl disulfide concentration in an insulating oil sampled from an oil-filled electrical device in operation; determining an estimated decrease of the residual dibenzyl disulfide concentration, relative to an initial dibenzyl disulfide concentration at the start of operation of the oil-filled electrical device; calculating the initial dibenzyl disulfide concentration from the residual dibenzyl disulfide concentration and the estimated decrease; and comparing the initial dibenzyl disulfide concentration with a specific management value.

    摘要翻译： 本发明是一种预测充油电气设备异常发生概率的方法，包括以下步骤：测量在充油电气设备中运行中取样的绝缘油中残留的二苄基二硫化物浓度; 确定残留的二苄基二硫化物浓度相对于充油电气设备开始操作时的初始二苄基二硫化物浓度的估计降低; 从残留二苄基二硫化物浓度计算初始二苄基二硫化物浓度和估计减少量; 并将初始二苄基二硫化物浓度与特定管理值进行比较。