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    Device and a method for control of power flow in a transmission line
    1.
    发明授权
    Device and a method for control of power flow in a transmission line 失效
    用于控制传输线中的功率流的装置和方法

    公开(公告)号：US06737837B1

    公开(公告)日：2004-05-18

    申请号：US10303081

    申请日：2002-11-25

    申请人： Per Halvarsson ,  Mojtaba Noroozian

    发明人： Per Halvarsson ,  Mojtaba Noroozian

    IPC分类号： G05F500

    CPC分类号： G05F1/70

    摘要： A device (2) for control of a power flow in a three-phase ac transmission line (L2, La, Lb, Lc) has, for each of its phases (a, b, c), a transformer (12a, 12b, 12c) with a primary winding (121c) and a secondary winding (122c). The secondary winding is serially connected into the respective phase of the transmission line. A voltage dependent on a controllable part of the voltage between the other two phases of the transmission line is applied to the primary winding of the transformer. The device comprises, for each of the phases of the transmission line, a series circuit with a first (T1a, T1b, T1c) and a second (T2a, T2b, T2c) terminal and a connection point (Ja, Jb, Jc). The series circuit comprises a first reactive impedance element (21a, 21b, 21c) with a fixed reactance connected between the first terminal and the connection point, and a second reactive impedance element (22a, 22b, 22c, 23a, 23b, 23c) with a variable reactance connected between the connection point and the second terminal. One of said terminals is coupled to the respective phase of the transmission line and the other terminal is coupled to a terminal at each of the other two series circuits so that, for all the phases, either the first or the second terminal is coupled to the transmission line. The mentioned primary winding is coupled between the connection points at the other two series circuits.

    摘要翻译： 用于控制三相交流传输线（L2，La，Lb，Lc）中的功率流的装置（2）对于每个相（a，b，c），具有变压器（12a，12b， 12c）和初级绕组（121c）和次级绕组（122c）。 次级绕组串联连接到传输线的相应的相位。 取决于传输线的其他两相之间的电压的可控部分的电压被施加到变压器的初级绕组。 对于传输线的每个相位，该装置包括具有第一（T1a，T1b，T1c）和第二（T2a，T2b，T2c）端子和连接点（Ja，Jb，Jc）的串联电路。 串联电路包括：第一无功阻抗元件（21a，21b，21c），其具有连接在第一端子和连接点之间的固定电抗;以及第二无功阻抗元件（22a，22b，22c，23a，23b，23c），其具有 连接在连接点和第二终端之间的可变电抗。 所述端子中的一个耦合到传输线的相应的相位，而另一个端子耦合到其它两个串联电路中的每一个的端子，使得对于所有相位，第一或第二端子都耦合到 传输线。 所提到的初级绕组耦合在另外两个串联电路的连接点之间。

    Control of power networks
    6.
    发明授权
    Control of power networks 失效
    电网控制

    公开(公告)号：US5909105A

    公开(公告)日：1999-06-01

    申请号：US780776

    申请日：1997-01-09

    申请人： Mojtaba Noroozian

    发明人： Mojtaba Noroozian

    IPC分类号： H02J3/18 ,  G05F1/24 ,  H02J3/24 ,  G05F1/70

    CPC分类号： H02J3/24

    摘要： In an apparatus for control of controller equipment for damping power oscillations in a power line, the controller equipment is serially connected between a first connection point and a second connection point in the power line in an electric network for alternating current. The controller equipment is adapted to serially generate in the power line, dependent on a control order, a damping voltage for damping power oscillations in the power line. Controlling equipment receives sensed quantities of the power network and forms a phase deviation dependent on these quantities. The phase deviation is the difference between a phase angle of a first voltage at the first connection point and a phase angle of a second voltage at the second connection point. The controlling equipment forms the control order dependent on the time rate of change of a function of the phase deviation. The control order controls the controller equipment to generate the damping voltage which feeds an active power in the power line counteracting changes in active power in the power line which are associated with power oscillations.

    摘要翻译： 在用于控制电力线路中的功率振荡的控制器设备的控制装置中，控制器设备串联连接在用于交流电的电网中的电力线中的第一连接点和第二连接点之间。 控制器设备适于根据控制顺序在电力线中串联生成用于阻尼电力线中的功率振荡的阻尼电压。 控制设备接收感测量的电力网络，并形成取决于这些数量的相位偏差。 相位偏差是第一连接点处的第一电压的相位角和第二连接点处的第二电压的相位角之间的差。 控制装置根据相位偏移函数的时间变化率来形成控制顺序。 控制顺序控制控制器设备产生阻尼电压，其将电力线中的有功功率反馈到与功率振荡相关的电力线中的有功功率的变化。