中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.022 seconds)

    DAMPING ELECTROMECHANICAL OSCILLATIONS IN POWER SYSTEMS
    1.
    发明申请
    DAMPING ELECTROMECHANICAL OSCILLATIONS IN POWER SYSTEMS 审中-公开
    电力系统中的阻尼机电振荡

    公开(公告)号：WO2006131017A2

    公开(公告)日：2006-12-14

    申请号：PCT/CH2006000308

    申请日：2006-06-08

    Applicant: ABB RESEARCH LTD ,  KORBA PETR ,  OUDALOV ALEXANDER ,  LARSSON MATS ,  LINDBERG JOHAN A ,  JOHANSSON STEFAN G

    Inventor： KORBA PETR ,  OUDALOV ALEXANDER ,  LARSSON MATS ,  LINDBERG JOHAN A ,  JOHANSSON STEFAN G

    CPC classification number: H02J3/24 ,  H02J3/06 ,  H02J3/1814 ,  Y02E40/18 ,  Y02E60/728 ,  Y04S10/265

    Abstract: The present invention is concerned with the combined voltage or power flow control and damping of electromechanical oscillations in an electric power system (2) by Flexible AC Transmission System (FACTS) devices (20) or High Voltage DC (HVDC) transmission devices. To this end, information about a state or operating point of the power system is generated from suitable second system signals (y 2 ) and a control parameter (cp) of a FACTS controller (1) is derived therefrom. The control parameter and a first system signal (y 1 ) are used in the calculation of a control command (u) defining the settings of the FACTS device. Following a change in the state of the power system such as a change in the topology of a transmission network, poorly damped or even unstable oscillations are avoided by appropriate re-tuning of the control parameter of the damping or stabilizing equipment.

    Abstract translation: 本发明涉及通过柔性交流传输系统（FACTS）装置（20）或高压直流（HVDC）传输装置的电力系统（2）中的机电振荡的组合电压或功率流控制和阻尼。 为此，从适当的第二系统信号（y 2> 2）产生关于电力系统的状态或操作点的信息，并且从其导出FACTS控制器（1）的控制参数（cp） 。 在定义FACTS设备的设置的控制命令（u）的计算中，使用控制参数和第一系统信号（y1> 1）。 随着电力系统状态的变化，例如传输网络拓扑的变化，通过对阻尼或稳定设备的控制参数进行适当的重新调整来避免差的阻尼或甚至不稳定的振荡。

    3.
    发明专利
    未知

    公开(公告)号：NO20076290L

    公开(公告)日：2008-01-22

    申请号：NO20076290

    申请日：2007-12-06

    Applicant: ABB RESEARCH LTD

    Inventor： KORBA PETR ,  OUDALOV ALEXANDER ,  LARSSON MATS ,  LINDBERG JOHAN A ,  JOHANSSON STEFAN G

    IPC: H02J3/24 ,  H02J3/06

    Abstract: The present invention is concerned with the combined voltage or power flow control and damping of electromagnetic oscillations in an electric power system (2) by Flexible AC Transmission System (FACTS) devices (20). To this end, information about a state or operating point of the power system is generated from suitable second system signals (y 2 ) and a control parameter (cp) of a FACTS controller (1) is derived therefrom. The control parameter and a first system signal (y 1 ) are used in the calculation of a control command (u) defining the settings of the FACTS device. Following a change in the state of the power system such as a change in the topology of a transmission network, poorly damped or even unstable oscillations are avoided by appropriate re-tuning of the control parameter of the damping or stabilizing equipment.

    5.
    发明专利
    未知

    公开(公告)号：AT474361T

    公开(公告)日：2010-07-15

    申请号：AT07820794

    申请日：2007-10-02

    Applicant: ABB RESEARCH LTD

    Inventor： BERGGREN BERTIL ,  LARSSON MATS ,  BENGTSSON TORD ,  KORBA PETR ,  OUDALOV ALEXANDER

    IPC: H02J3/24

    Abstract: The present invention is concerned with the computation of power system sensitivities from power flow parameters and control parameters of a Power Flow Control Device (PFC). To this end, control parameter variations are applied to or generated by a PFC (20), and comprise variations in a control input u , a control effort e (injected series voltage, inserted series reactance), or a control effect q (power flow, active power transfer, phase-shift, current). A power flow response measuring unit (40) measures a variation of a power flow response such as current, active or apparent power, in a way sufficiently synchronized with the control parameter variation to allow establishing an unambiguous causal relationship or correspondence in the form of a power system sensitivity. The latter may be on-line adapted to continuously reflect an updated aspect of the power system behaviour, and thus enable an improved, fast and reliable power flow control in power systems comprising a meshed power network with two parallel flow paths or corridors connecting two areas or sub-systems.

Patent Agency Ranking