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公开(公告)号：US08710700B2
公开(公告)日：2014-04-29
申请号：US13367085
申请日：2012-02-06
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。
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公开(公告)号：US20120200166A1
公开(公告)日：2012-08-09
申请号：US13367085
申请日：2012-02-06
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。
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公开(公告)号：US08798800B2
公开(公告)日：2014-08-05
申请号：US13323432
申请日：2011-12-12
申请人： Bertil Berggren , Petr Korba , Rajat Majumder , Swakshar Ray
发明人： Bertil Berggren , Petr Korba , Rajat Majumder , Swakshar Ray
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 in a first geographical area providing a first set of phasors and a second group of measurement units in a second geographical area 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 includes a phasor aligning unit that time aligns the first and second sets of phasors and a control unit 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.
摘要翻译： 本发明提供了一种具有在第一地理区域中提供第一组相量的第一组测量单元和第二组测量单元的功率传输系统的改进的控制，第二组测量单元提供第二组相量，其中相量 这些集合在同一时刻产生。 在该系统中，功率控制装置包括时间对准第一和第二组相量的相量对准单元以及将每组相量与相应的相量数阈值进行比较的控制单元，如果每个相量确定第一个控制条件满足 已经超过了数字阈值，并且如果满足第一控制条件，则能够提供公共信号。 公共信号基于第一和第二组中获得的相量。
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公开(公告)号：US08497602B2
公开(公告)日：2013-07-30
申请号：US12952906
申请日：2010-11-23
申请人： Petr Korba , Rafael Segundo , Bertil Berggren , Andrew D. Paice , Rajat Majumder
发明人： Petr Korba , Rafael Segundo , Bertil Berggren , Andrew D. Paice , Rajat Majumder
CPC分类号： H02J3/24 , Y02E60/728 , Y04S10/265
摘要： A method and controller are provided for the compensation of time delays in remote feedback signals in power system control. The method includes converting the time delay into a phase shift and calculating four compensation angles from the phase shift. The optimal compensation angle is determined and applied to the remote feedback signals. A technique of equipping a controller with a global clock is also disclosed.
摘要翻译： 提供了一种方法和控制器，用于补偿电力系统控制中的远程反馈信号中的时间延迟。 该方法包括将时间延迟转换成相移并从相移计算四个补偿角。 确定最佳补偿角并将其应用于远程反馈信号。 还公开了一种将控制器装配到全局时钟的技术。
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5.发明申请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中的功率流的方法和控制装置公开(公告)号：US20130127426A1
公开(公告)日：2013-05-23
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： G05F1/66
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。
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6.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
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。
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公开(公告)号：US20130054035A1
公开(公告)日：2013-02-28
申请号：US13323432
申请日：2011-12-12
申请人： Bertil Berggren , Petr Korba , Rajat Majumder
发明人： Bertil Berggren , Petr Korba , Rajat Majumder , Swadshar Ray
IPC分类号： G06F1/26
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 in a first geographical area providing a first set of phasors and a second group of measurement units in a second geographical area 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 includes a phasor aligning unit that time aligns the first and second sets of phasors and a control unit 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.
摘要翻译： 本发明提供了一种具有在第一地理区域中提供第一组相量的第一组测量单元和第二组测量单元的功率传输系统的改进的控制，第二组测量单元提供第二组相量，其中相量 这些集合在同一时刻产生。 在该系统中，功率控制装置包括时间对准第一和第二组相量的相量对准单元以及将每组相量与相应的相量数阈值进行比较的控制单元，如果每个相量确定第一个控制条件满足 已经超过了数字阈值，并且如果满足第一控制条件，则能够提供公共信号。 公共信号基于第一和第二组中获得的相量。
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8.发明授权公开(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。
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9.发明授权Apparatus and method for improved power flow control in a high voltage network 有权用于改善高压网络中的功率流控制的装置和方法公开(公告)号：US07859232B2
公开(公告)日：2010-12-28
申请号：US11666675
申请日：2005-10-20
申请人： Bertil Berggren , Mojtaba Noroozian
发明人： Bertil Berggren , Mojtaba Noroozian
IPC分类号： G05F5/04
CPC分类号： H02J3/1878 , H02J3/1807 , H02J3/1814 , Y02E40/10 , Y02E40/18 , Y02E40/30
摘要： An apparatus for controlling a power flow in a high voltage network. A phase shifting transformer includes a tap changer.
摘要翻译： 一种用于控制高压网络中的功率流的装置。 相移变压器包括分接开关。
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10.发明申请公开(公告)号：US20100088048A1
公开(公告)日：2010-04-08
申请号：US12633444
申请日：2009-12-08
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。
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