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10 条记录 (耗时 0.013 秒)

    METHOD AND CONTROL DEVICE FOR CONTROLLING POWER FLOW WITHIN A DC POWER TRANSMISSION NETWORK
    6.
    发明公开
    METHOD AND CONTROL DEVICE FOR CONTROLLING POWER FLOW WITHIN A DC POWER TRANSMISSION NETWORK 有权
    方法和设备潮流控制在直流输电网络

    公开(公告)号：EP2589128A1

    公开(公告)日：2013-05-08

    申请号：EP10731497.3

    申请日：2010-06-30

    申请人： ABB Research Ltd.

    发明人： BERGGREN, Bertil ,  MAJUMDER, Rajat ,  SAO, Charles ,  LINDEN, Kerstin

    IPC分类号： H02J3/36 ,  H02J1/10 ,  H02J1/14

    CPC分类号： G05F1/66 ,  H02J1/102 ,  H02J1/12 ,  H02J1/14 ,  H02J3/36 ,  Y02E60/60

    摘要： The invention relates to a method (80) for controlling power flow within a DC power flow within a DC power transmission network (1) comprising two or more interconnected converter stations (10
    a , 10
    b , 10
    c , 10
    d , 10
    e ). The method (80) comprises the steps of: establishing a common feedback signal (U
    d,common ,
    Ũ
    d'common ) to the converter stations, the common feedback signal (U
    d,common , Ũ
    d',common ) being based on an overall voltage level in the DC transmission, power network (1); providing, in the converter stations, a control signal (S
    1 , S
    2 , S
    3 , S
    4 ) based on the common feedback signal (U
    d,common ) and a drooped error signal (P
    e, droop , U
    e, droop ); and controlling the power flow within the DC power transmission network (1) towards set operating points ( U
    d
    ref ,
    PCC
    ref by using the control signal (S
    1 , S
    2 , S
    3 , S
    4 ). The invention also relates to a control device ( 18
    a , 18
    b , 18
    c , 18
    d , 18
    e ) and computer program products.

    ENHANCING WIDE AREA CONTROL RELIABILITY OF A POWER TRANSMISSION SYSTEM
    7.
    发明公开
    ENHANCING WIDE AREA CONTROL RELIABILITY OF A POWER TRANSMISSION SYSTEM 审中-公开
    随着对输电系统可靠性提高大面积控制

    公开(公告)号：EP2548278A1

    公开(公告)日：2013-01-23

    申请号：EP10715736.4

    申请日：2010-03-17

    申请人： ABB Research Ltd.

    发明人： MAJUMDER, Rajat

    IPC分类号： H02J3/24 ,  H02J13/00

    摘要： A method, arrangement and computer program product for enhancing the reliability of wide area control in a power transmission system where the wide area control is performed in the power transmission system based on measurements of system data. The arrangement includes an estimating unit configured to generate estimated measurement values based on at least one control signal being sent into the system and a model of the system, where the estimated measurement values correspond to a set of actual measurement values that are provided by a number of measurement providing devices in the system. The arrangement also includes a control unit configured to replace, if one or more deviation condition associated with at least one actual measurement value is fulfilled, at least the actual measurement values of the set being associated with the one or more deviation condition with corresponding estimated measurement values.

    POWER OR VOLTAGE OSCILLATION DAMPING IN A POWER TRANSMISSION SYSTEM
    9.
    发明公开
    POWER OR VOLTAGE OSCILLATION DAMPING IN A POWER TRANSMISSION SYSTEM 有权
    功率或电压浪涌衰减的动力传递系统

    公开(公告)号：EP2462673A1

    公开(公告)日：2012-06-13

    申请号：EP09781587.2

    申请日：2009-08-06

    申请人： ABB Research Ltd.

    发明人： BERGGREN, Bertil ,  MAJUMDER, Rajat ,  RAY, Swakshar ,  CHAUDHURI, Balarko ,  RAY CHAUDHURI, Nilanjan

    IPC分类号： H02J3/24

    CPC分类号： H02J3/24 ,  Y02E60/728 ,  Y04S10/265

    摘要： The invention provides a method, device and computer program product for providing improved control of power or voltage oscillation damping in a power transmission system. The device comprises a magnitude obtaining element (30) configured to obtain an instantaneous magnitude of a signal ( I ΔP I ) representing a deviating oscillation in at least one element (12) of the power transmission system, a slope investigating element (58) configured to determine the rate of change of the signal, and a first processing block (34) comprising an integrating element (38) configured to integrate the instantaneous magnitudes with an integrating factor (Ki) that is based on the determined rate of change. The first processing block is further configured to form a phase compensation angle (ϕ
    c ) based on the integrated instantaneous magnitude for use in a damping control signal generating unit in order to provide power or voltage oscillation damping of the system.

    IMPROVED CONTROL OF A POWER TRANSMISSION SYSTEM
    10.
    发明公开
    IMPROVED CONTROL OF A POWER TRANSMISSION SYSTEM 有权
    动力传输系统的改进的控制

    公开(公告)号：EP2441148A1

    公开(公告)日：2012-04-18

    申请号：EP09779726.0

    申请日：2009-06-11

    申请人： ABB Research Ltd.

    发明人： BERGGREN, Bertil ,  KORBA, Petr ,  MAJUMDER, Rajat ,  RAY, Swakshar

    IPC分类号： H02J3/24

    CPC分类号： H02J3/24

    摘要： The invention provides improved control of a power transmission system having a first group of measurement units (10, 12, 14) in a first geographical area (A_1) providing a first set of phasors and a second group of measurement units (16, 18) in a second geographical area (A_2) providing a second set of phasors, where the phasors in the sets are generated at the same instant in time. In this system the power control device (32) includes a phasor aligning unit (30) that time aligns the first and second sets of phasors and a control unit (33) that compares each set of phasors with a corresponding phasor number threshold, determines that a first control condition is fulfilled if each phasor number threshold has been exceeded and enables the provision of a common signal if the first control condition is fulfilled. The common signal is based on the obtained phasors in the first and second sets.