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44 条记录 (耗时 0.019 秒)

    Using the transfer switch of a hybrid circuit breaker as selector switch
    2.
    发明授权
    Using the transfer switch of a hybrid circuit breaker as selector switch 有权
    使用混合断路器的转换开关作为选择开关

    公开(公告)号：US09000623B2

    公开(公告)日：2015-04-07

    申请号：US14357310

    申请日：2011-11-11

    申请人： Bertil Berggren ,  Lars-Erik Juhlin

    发明人： Bertil Berggren ,  Lars-Erik Juhlin

    IPC分类号： H01H19/64 ,  H01H31/10 ,  H01H33/52 ,  H01H33/59 ,  H01H47/00 ,  H01H85/46 ,  H02B1/00 ,  H02H7/26 ,  H02J3/36

    CPC分类号： H02B1/00 ,  H02H7/268 ,  H02J3/36 ,  Y02E60/60 ,  Y10T307/747

    摘要： A high voltage direct current (HVDC) switchyard is provided. The switchyard is arranged for interconnecting three or more sections 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 and at least four transfer switches. 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.

    摘要翻译： 提供高压直流（HVDC）开关场所。 开关站设置用于互连HVDC电力网络的三个或更多个部分，例如传输线，转换器或任何其他类型的HVDC设备。 开关机构包括至少一个主断路器和至少四个转换开关。 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。

    Power or voltage oscillation damping in a power transmission system
    3.
    发明授权
    Power or voltage oscillation damping in a power transmission system 失效
    电力传输系统中的功率或电压振荡阻尼

    公开(公告)号：US08710700B2

    公开(公告)日：2014-04-29

    申请号：US13367085

    申请日：2012-02-06

    申请人： Bertil Berggren ,  Rajat Majumder ,  Swakshar Ray ,  Balarko Chaudhuri ,  Nilanjan Ray Chaudhuri

    发明人： Bertil Berggren ,  Rajat Majumder ,  Swakshar Ray ,  Balarko Chaudhuri ,  Nilanjan Ray Chaudhuri

    IPC分类号： H02J3/24

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

    摘要： A method, device and computer program product for providing improved control of power or voltage oscillation damping in a power transmission system. The device includes a magnitude obtaining element configured to obtain an instantaneous magnitude of a signal representing a deviating oscillation in at least one element of the power transmission system, a slope investigating element configured to determine the rate of change of the signal, and a first processing block including an integrating element configured to integrate the instantaneous magnitudes with an integrating factor that is based on the determined rate of change. The first processing block is further configured to form a phase compensation angle 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.

    摘要翻译： 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的控制的方法，装置和计算机程序产品。 该装置包括幅度获得元件，其被配置为获得表示电力传输系统的至少一个元件中的偏离振荡的信号的瞬时幅度，配置成确定信号变化率的斜率调查元件，以及第一处理 块包括集成元件，其被配置为将瞬时幅度与基于确定的变化率的积分因子进行积分。 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，以便提供系统的功率或电压振荡阻尼。

    Method And Device To Predict A State Of A Power System In The Time Domain
    5.
    发明申请
    Method And Device To Predict A State Of A Power System In The Time Domain 有权
    在时域中预测电力系统状态的方法和装置

    公开(公告)号：US20100088048A1

    公开(公告)日：2010-04-08

    申请号：US12633444

    申请日：2009-12-08

    申请人： Bertil Berggren ,  Tord Bengtsson ,  Stefan Roxenborg

    发明人： Bertil Berggren ,  Tord Bengtsson ,  Stefan Roxenborg

    IPC分类号： G01R23/16 ,  G06F19/00 ,  G01R31/00

    CPC分类号： G01R31/088 ,  G01R19/2513 ,  H02J13/0006

    摘要： A method to predict a state of a power system and a device to perform the method are presented, where the method includes the step of performing a Fast Fourier Transform on samples of a periodic waveform signal in order to determine a frequency spectrum of the signal, where the signal was derived from at least one measurable electric quantity of the power system and is representative for the state of the power system. Frequencies and related complex amplitudes at selected peaks in the frequency spectrum are determined and stored together with a time stamp. Afterwards, a predicted value of the periodic waveform signal in the time domain is determined at a prediction time by calculating a sum of sinusoidal signals at the prediction time, where each of the sinusoidal signals is characterized by one of the determined frequencies and its related complex amplitude as well as the time stamp.

    摘要翻译： 提出了一种预测电力系统的状态和执行该方法的装置的方法，其中该方法包括对周期性波形信号的采样执行快速傅立叶变换以确定该信号的频谱的步骤， 其中信号是从电力系统的至少一个可测量电量导出的，并且代表电力系统的状态。 在频谱中的选定峰处的频率和相关复振幅被确定并与时间戳一起存储。 之后，通过在预测时间计算正弦信号之和，在预测时间确定时域中周期性波形信号的预测值，其中每个正弦信号由所确定的频率之一及其相关复合物 幅度以及时间戳。

    USING THE TRANSFER SWITCH OF A HYBRID CIRCUIT BREAKER AS SELECTOR SWITCH
    8.
    发明申请
    USING THE TRANSFER SWITCH OF A HYBRID CIRCUIT BREAKER AS SELECTOR SWITCH 有权
    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：US20140313641A1

    公开(公告)日：2014-10-23

    申请号：US14357310

    申请日：2011-11-11

    申请人： Bertil Berggren ,  Lars-Erik Juhlin

    发明人： Bertil Berggren ,  Lars-Erik Juhlin

    IPC分类号： H02B1/00

    CPC分类号： H02B1/00 ,  H02H7/268 ,  H02J3/36 ,  Y02E60/60 ,  Y10T307/747

    摘要： A high voltage direct current (HVDC) switchyard is provided. The switchyard is arranged for interconnecting three or more sections 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 and at least four transfer switches. 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.

    摘要翻译： 提供高压直流（HVDC）开关场所。 开关站设置用于互连HVDC电力网络的三个或更多个部分，例如传输线，转换器或任何其他类型的HVDC设备。 开关机构包括至少一个主断路器和至少四个转换开关。 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
    9.
    发明授权
    Method and control device for controlling power flow within a DC power transmission network 有权
    用于控制直流电力传输网络内的电力流量的方法和控制装置

    公开(公告)号：US08553437B2

    公开(公告)日：2013-10-08

    申请号：US13807615

    申请日：2010-06-30

    申请人： Bertil Berggren ,  Rajat Majumder ,  Charles Sao ,  Kerstin Linden

    发明人： Bertil Berggren ,  Rajat Majumder ,  Charles Sao ,  Kerstin Linden

    IPC分类号： H02J1/00 ,  H02J3/00

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

    摘要： A method for controlling power flow within a DC power flow within a DC power transmission network includes two or more interconnected converter stations. The method includes the steps of: establishing a common feedback signal (Ud,common, Ũd,common) to the converter stations, the common feedback signal (Ud,common, Ũd,common) being based on an overall voltage level in the DC transmission, power network; providing, in the converter stations, a control signal (S1, S2, S3, S4) based on the common feedback signal (Ud,common) and a drooped error signal (Pe,droop, Ue,droop); and controlling the power flow within the DC power transmission network towards set operating points (Udref, PCCref) by using the control signal (S1, S2, S3, S4). A control device and computer program product is also described.

    摘要翻译： 用于控制直流电力传输网络内的直流电力流中的电力流量的方法包括两个或多个互连的转换站。 该方法包括以下步骤：为转换站建立公共反馈信号（Ud，公共，Ud，公共），公共反馈信号（Ud，公共，Ud，公共）基于直流传输中的整体电压电平 电力网络 在转换器站中基于公共反馈信号（Ud，公共）和下垂误差信号（Pe，droop，Ue，droop）提供控制信号（S1，S2，S3，S4） 以及通过使用所述控制信号（S1，S2，S3，S4）来控制所述DC电力传输网络内的功率流向设定工作点（Udref，PCCref）。 还描述了控制装置和计算机程序产品。

    HVDC SWITCHYARD AND AN HVDC SWITCHYARD SYSTEM
    10.
    发明申请
    HVDC SWITCHYARD AND AN HVDC SWITCHYARD SYSTEM 有权
    HVDC开关和HVDC开关系统

    公开(公告)号：US20130106184A1

    公开(公告)日：2013-05-02

    申请号：US13807618

    申请日：2011-06-30

    申请人： Jürgen Häfner ,  Björn Jacobson ,  Tomas Jonsson ,  Kerstin Lindén ,  Bertil Berggren

    发明人： Jürgen Häfner ,  Björn Jacobson ,  Tomas Jonsson ,  Kerstin Lindén ,  Bertil Berggren

    IPC分类号： H02J1/00

    CPC分类号： H02J1/00 ,  H01H33/596 ,  H02H7/1257 ,  H02H7/268 ,  Y10T307/313 ,  Y10T307/344 ,  Y10T307/391 ,  Y10T307/406 ,  Y10T307/729 ,  Y10T307/747

    摘要： 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.

    摘要翻译： 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。