Low resistance cabled conductors comprising superconducting ceramics
    4.
    发明授权
    Low resistance cabled conductors comprising superconducting ceramics 失效
    低电阻电缆导体包括超导陶瓷

    公开(公告)号:US06284979B1

    公开(公告)日:2001-09-04

    申请号:US08851719

    申请日:1997-05-05

    IPC分类号: H01B1210

    CPC分类号: H01L39/143

    摘要: A cabled conductor is provided for use in a cryogenically cooled circuit including refrigeration having a predetermined operating temperature and efficiency. The conductor includes multiple conductor strands cabled about the longitudinal axis of the conductor at a preselected cabling period, each strand including a composite of superconducting ceramic in intimate contact with conductive matrix material. Each filament has high performance regions in which the filament material is well-textured with its preferred direction aligned perpendicular to the widest longitudinal cross-section of the conductor alternating with poorly superconducting regions which are at least about half the diameter of a filament in length and in which the superconducting ceramic filament is strained by transposition in excess of its critical strain limit. In the poorly superconducting regions, the conductive matrix material provides an alternate current path. The ratio of the average length of the poorly superconducting regions to the preselected cabling period is less than about (&rgr;300e/&rgr;oe)&egr;E, where &rgr;oe is the resistivity of the composite at the operating temperature; &rgr;300e is the resistivity of the composite at 300 Kelvins; and &egr; is the predetermined efficiency of the refrigeration means at its operating temperature. In the preferred embodiment, this ratio is less than 1:4, and preferably less than 1:20.

    摘要翻译: 提供一种用于低温冷却回路中的电缆导体,包括具有预定工作温度和效率的制冷。 导体包括在预选布线周期围绕导体的纵向轴线布置的多个导线,每个线包括与导电基体材料紧密接触的超导陶瓷的复合材料。 每个灯丝具有高性能区域,其中长丝材料具有良好的织构,其优选的方向垂直于导体的最宽纵向横截面排列,与导体长度的至少约一半长度的不良超导区交替, 其中超导陶瓷细丝通过转移超过其临界应变极限而变形。 在较差的超导区域中,导电基体材料提供了交替的电流路径。 不良超导区域的平均长度与预选布线周期的比值小于约(rho300e / rhooe)epsiE,其中r为复合材料在工作温度下的电阻率; rho300e是300 Kelvins的复合材料的电阻率; 而epsi是制冷装置在其工作温度下的预定效率。 在优选实施方案中,该比率小于1:4,优选小于1:20。

    Fault current limiting HTS cable and method of configuring same
    6.
    发明授权
    Fault current limiting HTS cable and method of configuring same 有权
    故障电流限制HTS电缆及其配置方法

    公开(公告)号:US08886267B2

    公开(公告)日:2014-11-11

    申请号:US12951293

    申请日:2010-11-22

    摘要: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.

    摘要翻译: 低温冷却的HTS电缆被配置为包括在具有在没有低温冷却HTS电缆的情况下将发生的最大故障电流的公用电网中。 低温冷却HTS电缆包括用于循环液体冷冻剂的连续液体冷冻剂冷却剂路径。 HTS导线的连续灵活布置具有将最大故障电流衰减至少10%的阻抗特性。 HTS导线的连续柔性布置被配置为允许低温冷却的HTS电缆在最大故障状态发生期间在HTS导线内的最大温度上升以足够低以防止气泡形成 液体冷冻剂。

    Fault current limiting HTS cable and method of configuring same
    7.
    发明授权
    Fault current limiting HTS cable and method of configuring same 有权
    故障电流限制HTS电缆及其配置方法

    公开(公告)号:US07902461B2

    公开(公告)日:2011-03-08

    申请号:US11688809

    申请日:2007-03-20

    IPC分类号: H01B12/00

    摘要: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.

    摘要翻译: 低温冷却的HTS电缆被配置为包括在具有在没有低温冷却HTS电缆的情况下将发生的最大故障电流的公用电网中。 低温冷却HTS电缆包括用于循环液体冷冻剂的连续液体冷冻剂冷却剂路径。 HTS导线的连续灵活布置具有将最大故障电流衰减至少10%的阻抗特性。 HTS导线的连续柔性布置被配置为允许低温冷却的HTS电缆在最大故障状态发生期间在HTS导线内的最大温度上升以足够低以防止气泡形成 液体冷冻剂。

    PARALLEL CONNECTED HTS UTILITY DEVICE AND METHOD OF USING SAME
    8.
    发明申请
    PARALLEL CONNECTED HTS UTILITY DEVICE AND METHOD OF USING SAME 审中-公开
    平行连接的HTS实用设备及其使用方法

    公开(公告)号:US20080191561A1

    公开(公告)日:2008-08-14

    申请号:US11673281

    申请日:2007-02-09

    IPC分类号: H02G7/00 C04B35/45 H01B12/00

    摘要: A superconducting electrical cable system is configured to be included within a utility power grid. The superconducting electrical cable system includes a superconducting electrical path interconnected between a first and a second node within the utility power grid. A non-superconducting electrical path is interconnected between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path are electrically connected in parallel. The superconducting electrical path has a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path has a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.

    摘要翻译: 超导电缆系统被配置为包括在公用电网内。 超导电缆系统包括在公用电网内的第一和第二节点之间互连的超导电路径。 非超导电路径在公用电网内的第一和第二节点之间互连。 超导电路和非超导电路并联电连接。 当低于临界电流水平时,超导电路径具有比非超导电路径更低的串联阻抗。 当超过等于或高于临界电流水平时,超导电路具有比非超导电路更高的串联阻抗。

    Parallel connected HTS utility device and method of using same
    9.
    发明授权
    Parallel connected HTS utility device and method of using same 有权
    并联HTS实用设备及其使用方法

    公开(公告)号:US08532725B2

    公开(公告)日:2013-09-10

    申请号:US12692793

    申请日:2010-01-25

    IPC分类号: H01B12/00 H02H9/00

    摘要: A method of controlling fault currents within a utility power grid is provided. The method may include coupling a superconducting electrical path between a first and a second node within the utility power grid and coupling a non-superconducting electrical path between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path may be electrically connected in parallel. The superconducting electrical path may have a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path may have a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.

    摘要翻译: 提供一种控制公用电网内的故障电流的方法。 该方法可以包括在公用电力网内的第一和第二节点之间耦合超导电路径,并且在公用电力网格内的第一和第二节点之间耦合非超导电路径。 超导电路和非超导电路可以并联电连接。 当低于临界电流水平时,超导电路可以具有比非超导电路径更低的串联阻抗。 当超过等于或高于临界电流水平时,超导电路可能具有比非超导电路更高的串联阻抗。

    Structure and method of manufacture for minimizing filament coupling
losses in superconducting oxide composite articles

    公开(公告)号:US06038462A

    公开(公告)日:2000-03-14

    申请号:US862016

    申请日:1997-05-22

    摘要: A multifilamentary superconducting composite article comprising multiple substantially electrically decoupled domains, each including one or more fine, preferably twisted filaments of a desired superconducting oxide material. In a preferred embodiment, the article comprises a matrix, which substantially comprises a noble metal, a conductive jacketing layer surrounding the matrix, a plurality of discrete filament decoupling layers, each comprising an insulating material, disposed within the matrix to separate the matrix into a plurality of substantially electrically decoupled domains; a plurality of filaments, each comprising a desired superconducting oxide, which are disposed within and essentially encapsulated by the matrix and chemically isolated thereby from the decoupling layers, each of the electrically decoupled domains containing at least one filament. It provides multifilamentary articles that exhibit high DC performance characteristics and AC performance markedly superior to any currently available for these materials. The article may be manufactured by first, forming a composite intermediate comprising multiple domains, each including one or more fine, preferably twisted filaments of a superconducting oxide or its precursors and then thermomechanically processing the intermediate at conditions sufficient to produce at least one of the effects of texturing, crack healing and, if a precursor to the desired superconducting oxide remains, phase transformation in the filament material under conditions which support the electrical separation of the domains. Preferably, the forming step includes the step of providing filament decoupling layers comprising insulating materials or their predecessors to provide the desired domain separation and most preferably, the insulating material is formed in situ from its predecessor during the thermomechanical processing step. Oxide-forming predecessors are preferred, especially oxide forming materials selected from the group consisting of the transition metals, the alkaline earths, titanium, zirconium, niobium, molybdenum, aluminum, and their alloys. In a preferred embodiment, the desired superconducting oxide material is a member of the bismuth or yttrium families of oxide superconductors.