FAULT HANDLING DURING CIRCUIT BREAKER MAINTENANCE IN A DOUBLE-BREAKER BUSBAR SWITCHYARD
    1.
    发明申请
    FAULT HANDLING DURING CIRCUIT BREAKER MAINTENANCE IN A DOUBLE-BREAKER BUSBAR SWITCHYARD 审中-公开
    断路器母线开关中的断路器维护期间的故障处理

    公开(公告)号:WO2012136241A1

    公开(公告)日:2012-10-11

    申请号:PCT/EP2011/055184

    申请日:2011-04-04

    CPC classification number: H02H7/268 H02H7/30

    Abstract: A fault protection device (103) for a high voltage direct current (HVDC) double-breaker busbar unit (100) is provided. The busbar unit (100) comprises a first busbar (101), a second busbar (102), and at least three switchgear bays (110, 120, 130), each switchgear bay comprising a pair of direct current (DC) circuit breakers (112, 113, 122, 123, 132, 133) being arranged for connecting a DC circuit (111, 121, 131) to the busbars (101, 2). The device is arranged for tripping, during maintenance of any of the circuit breakers (112, 122, 132) connected to the first busbar (101), in 10 response to detecting a fault on a DC circuit (121) connected to the circuit breaker (122) under maintenance, all circuit breakers (113, 133) connected to the second busbar (102) except the circuit breaker (123) connected to the faulty DC circuit (121). An embodiment of the invention is advantageous in that the fault induced current which is to be interrupted is shared by at least two circuit breakers (113, 133). Further, a fault protection method of an HVDC double-breaker busbar unit is provided.

    Abstract translation: 提供了一种用于高压直流(HVDC)双断路母线单元(100)的故障保护装置(103)。 母线单元(100)包括第一母线(101),第二母线(102)和至少三个开关柜(110,120,130),每个开关柜室包括一对直流(DC)断路器 112,113,122,123,132,133)被布置成用于将DC电路(111,121,131)连接到汇流排(101,2)。 该装置被布置成在维护连接到第一母线(101)的任何断路器(112,122,132)的维护期间,响应于检测连接到断路器的DC电路(121)上的故障而跳闸 (122),除了连接到故障DC电路(121)的断路器(123)之外的连接到第二母线(102)的所有断路器(113,133)。 本发明的一个实施例的优点在于,要被中断的故障感应电流由至少两个断路器(113,133)共享。 此外,还提供了HVDC双断路器母线单元的故障保护方法。

    AN HVDC SWITCHYARD AND AN HVDC SWITCHYARD SYSTEM
    2.
    发明申请
    AN HVDC SWITCHYARD AND AN HVDC SWITCHYARD SYSTEM 审中-公开
    高压直流开关和高压直流开关系统

    公开(公告)号:WO2012001123A1

    公开(公告)日:2012-01-05

    申请号:PCT/EP2011/061044

    申请日:2011-06-30

    Abstract: The present invention relates to an HVDC switchyard arranged to interconnect a first part of a DC grid with a second part of the DC grid. By means of the invention, a first part of the DC grid is connected to the busbars of the HVDC switchyard via a fast DC breaker, while further part(s) of the DC grid are connected to the busbars of the HVDC switchyard by means of switchyard DC breakers of lower breaking speed. By use of the inventive HVDC switchyard arrangement, the cost for the HVDC switchyard can be considerably reduced, while adequate protection can be provided. In one embodiment, the fast DC breaker is an HVDC station DC breaker forming part of an HVDC station. In another embodiment, the fast DC breaker is a switchyard DC breaker.

    Abstract translation: 本发明涉及一种将DC网格的第一部分与DC网格的第二部分相互连接的HVDC开关场所。 通过本发明,DC电网的第一部分经由快速DC断路器连接到HVDC开关站的母线,而直流电网的另外部分通过以下方式连接到HVDC开关站的汇流条: 开关柜断路器的断开速度较低。 通过使用本发明的高压直流输电开关装置,可以显着地降低HVDC开关站的成本,同时可以提供足够的保护。 在一个实施例中,快速DC断路器是形成HVDC站的一部分的HVDC站DC断路器。 在另一个实施例中,快速DC断路器是开关站DC断路器。

    POWER OR VOLTAGE OSCILLATION DAMPING IN A POWER TRANSMISSION SYSTEM
    3.
    发明申请
    POWER OR VOLTAGE OSCILLATION DAMPING IN A POWER TRANSMISSION SYSTEM 审中-公开
    电力传输系统中的电源或电压振荡阻尼

    公开(公告)号:WO2011015247A1

    公开(公告)日:2011-02-10

    申请号:PCT/EP2009/060245

    申请日:2009-08-06

    CPC classification number: H02J3/24 Y02E60/728 Y04S10/265

    Abstract: 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.

    Abstract translation: 本发明提供了一种用于在电力传输系统中提供对功率或电压振荡阻尼的改进控制的方法,装置和计算机程序产品。 该装置包括:大小获得元件(30),其被配置为获得表示所述电力传输系统的至少一个元件(12)中的偏移振荡的信号(I→PI)的瞬时幅度;斜率调查元件(58)被配置 以确定信号的变化率,以及包括积分元件(38)的第一处理块(34),其被配置为将瞬时幅度与基于所确定的变化率的积分因子(Ki)进行积分。 第一处理块还被配置为基于用于阻尼控制信号生成单元的积分瞬时幅度形成相位补偿角(θc),以便提供系统的功率或电压振荡阻尼。

    A DEVICE AND A METHOD FOR PROTECTING AN OBJECT AGAINST FAULT-RELATED OVER-CURRENTS
    6.
    发明申请
    A DEVICE AND A METHOD FOR PROTECTING AN OBJECT AGAINST FAULT-RELATED OVER-CURRENTS 审中-公开
    一种用于保护与故障相关的电流对象的装置和方法

    公开(公告)号:WO1998029932A2

    公开(公告)日:1998-07-09

    申请号:PCT/SE1997002154

    申请日:1997-12-17

    CPC classification number: H02H3/023

    Abstract: The device according to the invention is adapted to protect, in an electric power plant, objects (1, 7, 27) against fault-related over-currents, said objects being connected to an electric power network (3) or another equipment in the electric power plant. An over-current reducing arrangement (5) is connected to a line (2), which interconnects the network/equipment (3) and the object (1, 7, 27), said arrangement being actuatable for over-current reduction with the assistance of an over-current condition detecting arrangement.

    Abstract translation: 根据本发明的装置适于在电力设备中保护物体(1,7,27)免受故障相关的过电流的影响,所述物体连接到电力网络(3)或其中的另一设备 电厂 过电流减少布置(5)连接到将网络/设备(3)和物体(1,7,27)互连的管线(2),所述布置可通过辅助来致动以进行过电流的还原 的过电流状态检测装置。

    USING THE TRANSFER SWITCH OF A HYBRID CIRCUIT BREAKER AS SELECTOR SWITCH
    9.
    发明申请
    USING THE TRANSFER SWITCH OF A HYBRID CIRCUIT BREAKER AS SELECTOR SWITCH 审中-公开
    使用混合电路断路器的转换开关作为选择开关

    公开(公告)号:WO2013068046A1

    公开(公告)日:2013-05-16

    申请号:PCT/EP2011/069943

    申请日:2011-11-11

    CPC classification number: H02B1/00 H02H7/268 H02J3/36 Y02E60/60 Y10T307/747

    Abstract: A high voltage direct current (HVDC) switchyard(300)is provided. The switchyard is arranged for interconnecting three or more sections(310, 320, 330)of an HVDC power network, such as transmission lines, converters, or any other type of HVDC equipment. The switchyard comprises at least one main circuit breaker (301) and at least four transfer switches(302–305). The at least one main circuit breaker and the at least four transfer switches are arranged so as to enable to individually disconnect any one of the at least three sections of the HVDC power distribution network. In an embodiment of the invention, the transfer switches which usually are comprised in direct current (DC) hybrid circuit breakers are used as selector switches,thereby reducing the number of main breakers in the switchyard.

    Abstract translation: 提供高压直流(HVDC)开关站(300)。 开关站设置用于互连诸如传输线,转换器或任何其它类型的HVDC设备的HVDC电力网络的三个或更多个部分(310,320,330)。 开关机构包括至少一个主断路器(301)和至少四个转换开关(302-305)。 所述至少一个主断路器和所述至少四个转换开关被布置成能够独立地断开所述HVDC配电网络中的所述至少三个部分中的任何一个。 在本发明的一个实施例中,通常包括在直流(DC)混合断路器中的转换开关用作选择器开关,从而减少了开关站中的主断路器的数量。

    METHOD AND CONTROL DEVICE FOR CONTROLLING POWER FLOW WITHIN A DC POWER TRANSMISSION NETWORK
    10.
    发明申请
    METHOD AND CONTROL DEVICE FOR CONTROLLING POWER FLOW WITHIN A DC POWER TRANSMISSION NETWORK 审中-公开
    这个控制功率流在网络电力传输方法和控制设备继续

    公开(公告)号:WO2012000549A1

    公开(公告)日:2012-01-05

    申请号:PCT/EP2010/059311

    申请日:2010-06-30

    CPC classification number: G05F1/66 H02J1/102 H02J1/12 H02J1/14 H02J3/36 Y02E60/60

    Abstract: 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.

    Abstract translation: 本发明涉及一种用于控制功率以连续的功率流中的DC电力传输网络,其包括两个换流站(10A,10B,10C,10D,10E)或多个流(1)的方法(80) 互联。 该方法(80)包括以下步骤:建立一个共同反馈信号(U D,常见的,共同U)到转换器站,公共反馈信号(U D,常见的,共同U) 是基于张力的连续输电网络中的总水平(1); 施加在变流器站,基于公共反馈信号(U D,常见)和经调节的误差信号的控制信号(S1,S2,S3,S4)(P E,下垂,U E, 下垂); 和由所述控制信号的装置(S1,S2,S3,S4),其控制功率的直流电力传输网络(1)中所设定的操作点(UD REF,PCCref)的流动。 本发明还涉及一种控制装置(18A,18B,18C,18D,18E)和计算机程序产品。

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