公开(公告)号：US20070057652A1

公开(公告)日：2007-03-15

申请号：US11520821

申请日：2006-09-13

申请人： Gary Hoffman ,  Thomas Tennille

发明人： Gary Hoffman ,  Thomas Tennille

IPC分类号： G05F1/16

CPC分类号： G05F1/147

摘要： A load tap changer (LTC) having a plurality of windings is coupled to one of the primary and secondary windings of a power transformer in order to regulate the output voltage of the power transformer. The LTC includes a plurality of taps physically and electrically connected to the LTC windings and the transformer's output voltage is increased/decreased by moving along the taps a contacting element whose movement is controlled by a rotating shaft driven by a motor. The tap being contacted is determined by sensing the direction and number of shaft rotations and by checking the number of shaft rotations specified to go from a tap to the next tap being contacted. The time for a full rotation of the shaft is also measured. Also, the temperature of the tanks containing the LTC taps and the power transformer is measured for each tap position.

摘要翻译： 具有多个绕组的有载分接开关（LTC）被耦合到电力变压器的一个和次级绕组中的一个，以便调节电力变压器的输出电压。 LTC包括物理和电连接到LTC绕组的多个抽头，并且变压器的输出电压通过沿着抽头移动一个接触元件来增大/减小，接触元件的移动由电动机驱动的旋转轴控制。 接触的水龙头通过感测轴旋转的方向和数量以及通过检查指定从一个水龙头到另一个水龙头被接触的轴旋转次数来确定。 也测量轴完全旋转的时间。 此外，对于每个分接位置，测量包含LTC抽头和电力变压器的箱体的温度。