Supplementary transformer cooling in a reactive power compensation system
    1.
    发明申请
    Supplementary transformer cooling in a reactive power compensation system 有权
    无功补偿系统中补充变压器冷却

    公开(公告)号:US20070188282A1

    公开(公告)日:2007-08-16

    申请号:US11354562

    申请日:2006-02-15

    IPC分类号: H01F27/08

    CPC分类号: H01F27/085 H01F27/025

    摘要: A reactive power compensation system includes a reactive power compensation device and a transformer electrically connected to the reactive power compensation device and having a cooling unit. The reactive power compensation device has an enclosure housing power electronics and at least one fan which provides an airflow for cooling the power electronics. The enclosure further includes an air outlet through which the airflow exits the enclosure after cooling the power electronics. The air outlet and the airflow are directed toward the cooling unit of the transformer to provide supplementary cooling to the transformer. The transformer cooling unit comprises external cooling fins in a liquid-filled transformer embodiment and comprises an air inlet of the transformer housing in a dry-type transformer embodiment. An optional duct may be provided between the enclosure and the transformer cooling unit.

    摘要翻译: 无功补偿系统包括无功补偿装置和电连接到无功补偿装置并具有冷却装置的变压器。 无功补偿装置具有容纳电力电子装置的外壳和至少一个风扇,其提供用于冷却电力电子装置的气流。 外壳还包括空气出口,在冷却电力电子设备之后,空气通过空气出口离开外壳。 空气出口和气流朝向变压器的冷却单元,以向变压器提供补充冷却。 变压器冷却单元包括在液体填充的变压器实施例中的外部散热片,并且在干式变压器实施例中包括变压器壳体的空气入口。 可以在外壳和变压器冷却单元之间提供可选的管道。

    Dynamic reactive compensation system and method
    2.
    发明申请
    Dynamic reactive compensation system and method 有权
    动态无功补偿系统及方法

    公开(公告)号:US20050194944A1

    公开(公告)日:2005-09-08

    申请号:US10794398

    申请日:2004-03-04

    IPC分类号: G05F1/70 H02J3/18

    CPC分类号: H02J3/1828 Y02E40/30

    摘要: The invention features a system for connection to a utility power network. The system includes a reactive power compensation device coupled to the network and configured to transfer reactive power between the utility power network and the reactive power compensation device; a capacitor system configured to transfer capacitive reactive power between the utility power network and the capacitor system; an electro-mechanical switch for connecting and disconnecting the capacitor system to the utility power network; an interface associated with the electro-mechanical switch; a controller configured to provide control signals for controlling the electro-mechanical switch; and a communication channel for coupling the controller to the interface associated with the electro-mechanical switch. The electro-mechanical switch, interface, controller, and communication channel together are configured to connect or disconnect the capacitor system from the utility power network within about three line cycles or less of the nominal voltage frequency when a fault condition is detected on the utility power network.

    摘要翻译: 本发明的特征在于用于连接到公共电力网络的系统。 该系统包括耦合到网络并被配置为在公用电力网络和无功功率补偿装置之间传送无功功率的无功功率补偿装置; 电容器系统,被配置为在所述公用电力网络和所述电容器系统之间传送容性无功功率; 用于将电容器系统连接到公用电力网络的电动机械开关; 与机电开关相关的接口; 控制器,被配置为提供用于控制所述机电开关的控制信号; 以及用于将控制器耦合到与机电开关相关联的接口的通信通道。 机电开关,接口,控制器和通信通道一起被配置为在公用电力网络中检测到故障条件时,在公用电力网络的大约三个线路周期内或更短的时间内将电容器系统与公用电力网络连接或断开 网络。

    Fabrication of sealed high temperature superconductor wires
    3.
    发明申请
    Fabrication of sealed high temperature superconductor wires 失效
    密封高温超导电线的制造

    公开(公告)号:US20070179063A1

    公开(公告)日:2007-08-02

    申请号:US11490779

    申请日:2006-07-21

    IPC分类号: H01L39/22

    摘要: A method of making a laminated superconductor wire includes providing an assembly, where the assembly includes a substrate; a superconductor layer overlaying a surface of the substrate, the superconductor layer having a defined pattern; and a cap layer; and slitting the assembly in accordance with the defined pattern of the superconductor layer to form a sealed wire. Slitting the assembly in accordance with the defined pattern may form multiple sealed wires, and the substrate may be substantially wider than the sealed wires.

    摘要翻译: 制造层压超导体线的方法包括提供组件,其中组件包括基底; 超导体层,覆盖基板的表面,超导体层具有限定的图案; 和盖层; 并根据超导体层的限定图案切割组件以形成密封的线。 根据限定的图案分割组件可以形成多个密封的线,并且基底可以比密封的线大得多。

    Reactive power compensation to minimize step voltage changes and transients
    4.
    发明申请
    Reactive power compensation to minimize step voltage changes and transients 有权
    无功功率补偿,以最小化步进电压变化和瞬变

    公开(公告)号:US20060082348A1

    公开(公告)日:2006-04-20

    申请号:US11136333

    申请日:2005-05-24

    IPC分类号: G05F1/70

    CPC分类号: H02J3/1828 Y02E40/30

    摘要: The invention features a system and approach for minimizing the step voltage change as seen by the utility customer as well minimizing transients imposed on the fundamental waveform of a normal voltage carried on a utility power network when a reactive power source (e.g., capacitor bank) is instantaneously connected to the utility power. The reactive power source is adapted to transfer reactive power of a first polarity (e.g., capacitive reactive power) to the utility power network. The system includes a reactive power compensation device configured to transfer a variable quantity of reactive power of a second, opposite polarity to the utility power network, and a controller which, in response to the need to connect the shunt reactive power source to the utility power network, activates the reactive power compensation device and, substantially simultaneously, causes the shunt reactive power source to be connected to the utility power.

    摘要翻译: 本发明的特征在于一种系统和方法,用于使公用事业客户所看到的阶跃电压变化最小化,并且当无功电源(例如,电容器组)为...时,最小化施加在公用电力网络上承载的正常电压的基波形的瞬变 瞬间连接到公用电源。 无功功率源适于将第一极性(例如,电容性无功功率)的无功功率传送到公用电力网络。 该系统包括无功功率补偿装置,其被配置为向公用电力网络传送可变量的具有第二相反极性的无功功率;以及控制器,其响应于将分流无功功率源连接到公用电力的需要 网络,激活无功功率补偿装置,并且基本上同时地使分流无功电源连接到公用电力。