Method for transferring power in a synchronous mode to a motor bus
    1.
    发明授权
    Method for transferring power in a synchronous mode to a motor bus 失效
    以同步模式将电力传输到电机总线的方法

    公开(公告)号:US4310771A

    公开(公告)日:1982-01-12

    申请号:US37703

    申请日:1979-05-10

    摘要: In a typical power system, a motor bus is fed by a main power system; and, an auxiliary system is provided to alternatively feed the motor bus. When a fast transfer from the main power to the auxiliary power system is desired, for example, in case of fault occurring in the main system, the inventive method transfers power in a synchronous mode; that is, power is transferred from the auxiliary system to the motor bus when the phase difference of the auxiliary system with respect to the frequency of the residual voltage on the motor bus is essentially zero degrees.

    摘要翻译: 在典型的电力系统中,电动车总线由主电力系统供电; 并且提供辅助系统以交替地供给马达总线。 当需要从主电源到辅助电力系统的快速传送时,例如,在主系统中发生故障的情况下,本发明的方法以同步模式传送电力; 即当辅助系统相对于马达总线上的残余电压的频率的相位差基本上为零度时,电力从辅助系统传递到马达总线。

    Synchronizing check relay
    2.
    发明授权
    Synchronizing check relay 失效
    同步检查继电器

    公开(公告)号:US4218625A

    公开(公告)日:1980-08-19

    申请号:US872268

    申请日:1978-01-25

    IPC分类号: H02H11/00 H02J3/08

    摘要: A synchronizing check relay is used in an electrical transmission network for controlling a circuit breaker to interconnect first and second transmission lines to establish power flow therebetween and includes an input circuit for receiving signals from first and second transmission lines. A phase difference generator generates a phase difference signal proportional to a phase difference between said signals from said first and second transmission lines. A phase difference comparator receives the phase difference signal and produces a phase output signal at a selected phase condition. An adjustable timer produces a timer signal after a selected time interval in response to the phase comparator to insure a proper phase difference between the transmission lines. The voltage sensor produces a breaker closing inhibit signal when one of the alternating current voltages is outside a reference limit. A control circuit is responsive to the phase output signal, the time signal and the breaker closing inhibit signal for providing a control response to the circuit breaker.

    摘要翻译: 在电传输网络中使用同步检查继电器,用于控制断路器以互连第一和第二传输线路以在其间建立功率流,并且包括用于从第一和第二传输线路接收信号的输入电路。 相位差发生器产生与来自所述第一和第二传输线的所述信号之间的相位差成比例的相位差信号。 相位差比较器接收相位差信号,并在所选择的相位条件下产生相位输出信号。 可调定时器响应于相位比较器在选定的时间间隔之后产生定时器信号,以确保传输线之间的适当的相位差。 当交流电压之一超过参考极限时,电压传感器产生断路器闭合禁止信号。 控制电路响应相位输出信号,时间信号和断路器闭合禁止信号,以提供对断路器的控制响应。

    Lightning grounding towers as used in sytems for inducing lightning to eliminate hurricanes
    4.
    发明申请
    Lightning grounding towers as used in sytems for inducing lightning to eliminate hurricanes 审中-公开
    闪电接地塔用于系统中用于引发闪电以消除飓风

    公开(公告)号:US20080011500A1

    公开(公告)日:2008-01-17

    申请号:US11714559

    申请日:2007-03-06

    IPC分类号: H02G13/00

    CPC分类号: H02G13/00 H02G13/80

    摘要: It is believed that Raytheon uses lightning strikes to prevent rotating clouds from building into hurricanes. In this invention, metal towers are placed on islands so as to safely ground the Raytheon man made lightning strokes without damage to property or loss of life.

    摘要翻译: 相信Raytheon使用雷击来防止旋转的云层建成飓风。 在本发明中,金属塔被放置在岛上,以便安全地将Raytheon人雷击作为地面,而不损害财产或生命的损失。

    Underload tapchanging voltage regulators for ease of field replacement and for improved operator safety
    5.
    发明授权
    Underload tapchanging voltage regulators for ease of field replacement and for improved operator safety 失效
    欠压变电调压器,便于现场更换,并提高操作员的安全性

    公开(公告)号:US07049795B2

    公开(公告)日:2006-05-23

    申请号:US10837994

    申请日:2004-05-03

    IPC分类号: G05F1/16

    CPC分类号: G05F1/14

    摘要: Under load tapchanging voltage regulators with source and load connections, series and shunt transformers, switching devices for causing selectable levels of electric power to flow in either direction between the series and shunt transformers, and tapchanger controls for sensing the voltage at said load connections and causing the switching devices to select proper electric power flows so as to maintain desired voltages at the load connections.

    摘要翻译: 具有源极和负载连接的负载变压调压器,串联和并联变压器,用于使串联和并联变压器之间的任意方向上的可选择电力水平流动的开关装置,以及用于感测所述负载连接处的电压并引起 开关装置选择合适的电力流,以便在负载连接处保持期望的电压。

    Synchronous linear machine for protective relaying
    7.
    发明授权
    Synchronous linear machine for protective relaying 失效
    同步线性保护继电器

    公开(公告)号:US06370483B1

    公开(公告)日:2002-04-09

    申请号:US09303449

    申请日:1999-05-03

    IPC分类号: G01R1900

    CPC分类号: G01R19/2513

    摘要: Synchronous programs give increased sampling rates of AC signals and provide AC phasors yielding fast response to undesired conditions.

    摘要翻译: 同步程序提供了交流信号的提高采样率,并提供交流相量,从而对不需要的条件产生快速响应。

    Load tapchanger transformer paralleling by daisy chain comparison of
load currents
    9.
    发明授权
    Load tapchanger transformer paralleling by daisy chain comparison of load currents 失效
    负载变压器并联负载电流的菊花链比较

    公开(公告)号:US5530338A

    公开(公告)日:1996-06-25

    申请号:US398869

    申请日:1995-03-06

    IPC分类号: G05F1/14 H02J3/12

    CPC分类号: H02J3/12 G05F1/14

    摘要: A system and method of paralleling tapchanging transformers. The transformers are connected to provide a daisy chain of output load currents processed as pairs of currents by each tapchanger control. Transformer load currents are balanced as desired regardless of whether or not transformer primaries are supplied in parallel.

    摘要翻译: 并联变压器的系统和方法。 变压器被连接以提供通过每个分接开关控制被处理成电流对的输出负载电流的菊花链。 变压器负载电流根据需要进行平衡,而不管变压器母线是否并联供电。

    Method for die lip temperature adjustment in a thermoplastic extruder
    10.
    发明授权
    Method for die lip temperature adjustment in a thermoplastic extruder 失效
    热塑性挤出机中模唇温度调节方法

    公开(公告)号:US5567369A

    公开(公告)日:1996-10-22

    申请号:US461864

    申请日:1995-06-05

    摘要: A method for the control of wall thickness of an extruded thermoplastic material. The method includes extruding a thermoplastic material from an extruder through a die gap formed between first and second die lips. One of the die lips has a plurality of separate sectors adjacent the die gap, with each sector having a circulating oil passageway therein. The circulating oil passageways are connected in a series along the die gap. The method includes circulating through each circulating oil passage, within each sector adjacent the die lip, a heat transfer oil from a common source at a selected heating or cooling temperature. The method includes controlling the rate of flow of said heat transfer oil in each sector by an adjustable flow control valve, in order to control the temperature of each sector, and thereby to adjust the viscosity of the thermoplastic material being extruded, and controlling the wall thickness of the extruded thermoplastic material.

    摘要翻译: 一种用于控制挤出的热塑性材料的壁厚的方法。 该方法包括从挤出机挤出热塑性材料通过形成在第一和第二模唇之间的模间隙。 模唇中的一个具有与模间隙相邻的多个分开的部分,每个扇区在其中具有循环油通道。 循环油通道沿着模具间隙串联连接。 该方法包括在选定的加热或冷却温度下循环通过邻近模唇的每个扇区内的每个循环油通道中的来自共同源的传热油。 该方法包括通过可调节的流量控制阀来控制每个扇区中的所述传热油的流速,以便控制每个扇区的温度,从而调节被挤出的热塑性材料的粘度,并控制壁 挤出的热塑性材料的厚度。