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1. 发明申请

US20140191507A1 METHOD FOR CONTROLLING POWER FLOW WITHIN A WIND PARK SYSTEM, CONTROLLER, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCTS 有权
标题翻译：控制器，计算机程序和计算机程序产品的控制方法
公开(公告)号：US20140191507A1
公开(公告)日：2014-07-10
申请号：US14127874
申请日：2011-06-20
申请人： Per Holmberg , Ying Jiang-Häfner , Lars-Erik Juhlin
发明人： Per Holmberg , Ying Jiang-Häfner , Lars-Erik Juhlin
IPC分类号： F03D9/00 , H02J3/04 , H02J3/46 , H02J3/36
CPC分类号： H02J3/46 , F03D7/0284 , F03D7/048 , F03D9/257 , F05B2270/337 , H02J3/04 , H02J3/36 , H02J3/386 , H02J2003/388 , Y02E10/723 , Y02E10/763 , Y02E60/60
摘要： The invention relates to a method for controlling power flow within a wind park system (100) for power transmission to a main power grid (90), the wind park system (100) comprising two or more parallel-connected island wind park grids. The method comprises the steps of: controlling a first voltage source converter (10) as a swing bus in frequency control, the frequency control comprising controlling frequency to a steady state reference operating point for operating points within a power dead band and by means of frequency droop control when exceeding an end point of the power dead band, and controlling at least a second voltage source converter (20), (30), (40) in power control, the power control comprising controlling power flow to a steady state reference operating point for operating points within a frequency dead band and by means of power droop control when exceeding an end point of the frequency dead band. The invention also relates to controllers, computer programs and computer program products.
摘要翻译：本发明涉及一种用于控制风力发电系统（100）内用于向主电网（90）供电的功率流的方法，所述风电场系统（100）包括两个或多个并联连接的岛式风电场网格。该方法包括以下步骤：在频率控制中控制第一电压源转换器（10）作为摆动总线，所述频率控制包括将频率控制在用于工作死区内的工作点的稳态参考工作点，并且通过频率当超过功率死区的终点时下降控制，以及至少控制功率控制中的第二电压源转换器（20），（30），（40），所述功率控制包括将功率流控制到稳态参考运行指向频率死区内的工作点，并且当超过频率死区的终点时通过功率下降控制。本发明还涉及控制器，计算机程序和计算机程序产品。

2. 发明授权

US08946917B2 Method for controlling power flow within a wind park system, controller, computer program and computer program products 有权
标题翻译：用于控制风电场系统，控制器，计算机程序和计算机程序产品内的电力流量的方法
公开(公告)号：US08946917B2
公开(公告)日：2015-02-03
申请号：US14127874
申请日：2011-06-20
申请人： Per Holmberg , Ying Jiang-Häfner , Lars-Erik Juhlin
发明人： Per Holmberg , Ying Jiang-Häfner , Lars-Erik Juhlin
IPC分类号： F03D9/00 , H02P9/04
CPC分类号： H02J3/46 , F03D7/0284 , F03D7/048 , F03D9/257 , F05B2270/337 , H02J3/04 , H02J3/36 , H02J3/386 , H02J2003/388 , Y02E10/723 , Y02E10/763 , Y02E60/60
摘要： A method is provided for controlling power flow within a wind park system for power transmission to a main power grid, the wind park system including two or more parallel-connected island wind park grids. The method includes the steps of: controlling a first voltage source converter as a swing bus in frequency control, the frequency control including controlling frequency to a steady state reference operating point for operating points within a power dead band and by frequency droop control when exceeding an end point of the power dead band, and controlling at least a second voltage source converter in power control, the power control including controlling power flow to a steady state reference operating point for operating points within a frequency dead band and by power droop control when exceeding an end point of the frequency dead band. A controller and computer program product are also provided.
摘要翻译：提供了一种用于控制风力发电系统内的功率流的方法，用于向主电网供电，该风电场系统包括两个或更多个并联连接的岛屿风电场网格。该方法包括以下步骤：在频率控制中控制第一电压源转换器作为摆动总线，所述频率控制包括控制频率到稳态参考工作点，用于在功率死区内的工作点以及通过频率下降控制超过功率死区的端点，以及在功率控制中至少控制第二电压源转换器，所述功率控制包括控制功率流到稳定状态参考工作点以用于频率死区内的工作点，以及当超过频率死区时的功率下降控制频率死区的终点。还提供控制器和计算机程序产品。

3. 发明授权

US08736112B2 Multi-terminal DC transmission system and method and means for control there-of 有权
标题翻译：多终端直流输电系统及其控制方法和手段
公开(公告)号：US08736112B2
公开(公告)日：2014-05-27
申请号：US13807650
申请日：2010-06-30
申请人： Kerstin Linden , Gunnar Flisberg , Lars-Erik Juhlin , Per Holmberg
发明人： Kerstin Linden , Gunnar Flisberg , Lars-Erik Juhlin , Per Holmberg
IPC分类号： H02J1/00
CPC分类号： H02J1/00 , H02J1/12 , H02J3/36 , H02M7/7575 , Y02E60/60 , Y10T307/707
摘要： A method for controlling power flow within a multi-terminal DC power transmission system including two or more converter stations and the corresponding multi-terminal DC power transmission system are provided. The method includes the steps of: controlling the power flow to a steady state reference operating point for operating points within a control dead band defined for each respective converter station, and controlling the power flow by means of droop control in at least one of the converter stations upon detection of exceeding of an end point of one or more of the control dead bands.
摘要翻译：提供了一种用于控制包括两个或更多个转换器站和相应的多终端DC电力传输系统的多终端直流电力传输系统内的电力流量的方法。该方法包括以下步骤：控制到用于为每个相应转换站定义的控制死区内的工作点的稳态参考工作点的功率流，以及通过在至少一个转换器中的下垂控制来控制功率流检测到超过一个或多个控制死区的终点的站。

4. 发明申请

US20130334887A1 MULTI-TERMINAL DC TRANSMISSION SYSTEM AND METHOD AND MEANS FOR CONTROL THERE-OF 有权
标题翻译：多终端直流传输系统及其控制方法及其手段
公开(公告)号：US20130334887A1
公开(公告)日：2013-12-19
申请号：US13807650
申请日：2010-06-30
申请人： Kerstin Linden , Gunnar Flisberg , Lars-Erik Juhlin , Per Holmberg
发明人： Kerstin Linden , Gunnar Flisberg , Lars-Erik Juhlin , Per Holmberg
IPC分类号： H02J1/00
CPC分类号： H02J1/00 , H02J1/12 , H02J3/36 , H02M7/7575 , Y02E60/60 , Y10T307/707
摘要： A method for controlling power flow within a multi-terminal DC power transmission system including two or more converter stations and the corresponding multi-terminal DC power transmission system are provided. The method includes the steps of: controlling the power flow to a steady state reference operating point for operating points within a control dead band defined for each respective converter station, and controlling the power flow by means of droop control in at least one of the converter stations upon detection of exceeding of an end point of one or more of the control dead bands.
摘要翻译：提供了一种用于控制包括两个或更多个转换站和相应的多终端DC电力传输系统的多终端直流电力传输系统内的电力流量的方法。该方法包括以下步骤：控制到用于为每个相应转换站定义的控制死区内的工作点的稳态参考工作点的功率流，以及通过在至少一个转换器中的下垂控制来控制功率流检测到超过一个或多个控制死区的终点的站。

5. 发明授权

US09000623B2 Using the transfer switch of a hybrid circuit breaker as selector switch 有权
标题翻译：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。

6. 发明申请

US20140055903A1 FAST BREAKER FAILURE DETECTION FOR HVDC CIRCUIT BREAKERS 有权
标题翻译：快速断路器故障检测用于高压直流断路器
公开(公告)号：US20140055903A1
公开(公告)日：2014-02-27
申请号：US14007926
申请日：2011-04-04
申请人： Lars-Erik Juhlin
发明人： Lars-Erik Juhlin
IPC分类号： H01H71/00
CPC分类号： H01H71/00 , H02H3/087 , H02H7/222 , H02H7/268
摘要： A breaker failure detection device for a direct current (DC) circuit breaker (200) is provided. The circuit breaker comprises a circuit breaking element (204) and a non-linear resistor, e.g., a surge arrester (205), connected in parallel. The breaker failure detection device comprises a current sensor (212, 213, 214, 215), for measuring a current commutating from the circuit breaking element (204), and a breaker failure detection unit (211). The breaker failure detection unit (211) is arranged for comparing the measured current to desired values and deciding that an internal commutation process of the circuit breaker (200) does not proceed as desired if the measured current deviates from the desired values. The present invention makes use of an understanding that an improved detection of breaker failures may be achieved by monitoring the internal commutation process of the circuit breaker. Further, a method of breaker failure detection is provided.
摘要翻译：提供一种用于直流（DC）断路器（200）的断路器故障检测装置。断路器包括并联连接的断路元件（204）和非线性电阻器（例如避雷器（205））。断路器故障检测装置包括用于测量从断路元件（204）换向的电流的电流传感器（212,213,214,215）和断路器故障检测单元（211）。断路器故障检测单元（211）被布置成用于将测量的电流与期望值进行比较，并且如果测量的电流偏离期望值，则确定断路器（200）的内部换向过程不需要进行。本发明利用这样的理解可以通过监视断路器的内部换向过程来实现对断路器故障的改进的检测。此外，提供了一种断路器故障检测方法。

7. 发明申请

US20120033462A1 POWER FLOW CONTROL IN A MESHED HVDC POWER TRANSMISSION NETWORK 有权
标题翻译：高压直流输电网络中的功率流量控制
公开(公告)号：US20120033462A1
公开(公告)日：2012-02-09
申请号：US13262926
申请日：2009-04-06
申请人： Lars-Erik Juhlin
发明人： Lars-Erik Juhlin
IPC分类号： H02J3/36
CPC分类号： H02J3/36 , Y02E60/60 , Y10T307/544 , Y10T307/707
摘要： A meshed HVDC power transmission network comprises at least three HVDC converter stations interconnected in a first closed path by at least three transmission lines. A first DC power flow control device is series connected to a first of the at least three transmission lines. That first DC power flow control device takes its power from the first transmission line and balances the DC current distribution in the first closed path.
摘要翻译：网状HVDC电力传输网络包括至少三个HVDC转换站，其在第一封闭路径中由至少三条传输线互连。第一直流电力流量控制装置串联连接至至少三条传输线中的第一条。该第一直流电流控制装置从第一传输线路接收电力并平衡第一封闭路径中的直流电流分布。

8. 发明授权

US08884176B2 HVDC breaker and control apparatus for controlling an HVDC breaker 有权
标题翻译： HVDC断路器和用于控制HVDC断路器的控制装置
公开(公告)号：US08884176B2
公开(公告)日：2014-11-11
申请号：US13504411
申请日：2009-10-27
申请人： Lars-Erik Juhlin
发明人： Lars-Erik Juhlin
IPC分类号： H01H33/02 , H01H33/59 , H01H9/16 , H01H9/00 , H01H33/16
CPC分类号： H01H33/596 , H01H9/167 , H01H33/161 , H01H2009/0083
摘要： The invention relates to an HVDC breaker (300) comprising at least two individually controllable HVDC breaker sections (305) connected in series, wherein the HVDC breaker is arranged in a manner so that the number of HVDC breaker sections tripped upon tripping of the HVDC breaker depends on the operational event in response to which the tripping occurs. The invention further relates to a control apparatus (400) for controlling the HVDC breaker, as well as to a method of breaking an HVDC line. The method comprises receiving (500) a system status signal indicative of an operational event requiring the breaking of the HVDC line, and determining (505) the number of HVDC breaker sections required for the breaking.
摘要翻译：本发明涉及一种HVDC断路器（300），其包括串联连接的至少两个可独立控制的HVDC断路器部分（305），其中HVDC断路器被布置成使得在HVDC断路器跳闸时HVDC断路器部件的数量跳闸取决于发生跳闸的操作事件。本发明还涉及用于控制HVDC断路器的控制装置（400）以及破坏HVDC线路的方法。该方法包括接收（500）指示需要断开HVDC线路的操作事件的系统状态信号，以及确定（505）断开所需的HVDC断路器部分的数量。

9. 发明授权

US08817427B2 Current limitation system for limiting the effects of a fault in a DC grid and a method of operating a current limitation system 有权
标题翻译：用于限制直流电网故障影响的电流限制系统和运行电流限制系统的方法
公开(公告)号：US08817427B2
公开(公告)日：2014-08-26
申请号：US13983996
申请日：2011-03-11
申请人： Bertil Berggren , Jurgen Häfner , Lars-Erik Juhlin , Kerstin Linden , Lidong Zhang
发明人： Bertil Berggren , Jurgen Häfner , Lars-Erik Juhlin , Kerstin Linden , Lidong Zhang
IPC分类号： H02H3/00 , H02H3/08 , H02H3/02 , H02H7/26 , H02H3/20
CPC分类号： H02H3/08 , H02H3/02 , H02H3/20 , H02H7/268
摘要： A current-limitation system for limiting a current through an DC connection in case of a fault occurring in a DC grid of which the DC connection forms a part is provided, as well as a method of operating a current-limitation system for limiting a current through an DC connection in case of a fault occurring in a DC grid of which the DC connection forms a part.
摘要翻译：提供了一种电流限制系统，用于限制在直流连接形成一部分的直流电网中发生故障的情况下通过直流连接的电流，以及一种操作电流限制系统以限制电流的方法通过DC连接，在DC连接形成部件的直流电网中发生故障的情况下。

10. 发明申请

US20120026760A1 DC VOLTAGE COMPENSATION IN A MULTI-TERMINAL HVDC POWER TRANSMISSION NETWORK 有权
标题翻译：多端HVDC电力传输网络中的直流电压补偿
公开(公告)号：US20120026760A1
公开(公告)日：2012-02-02
申请号：US13262885
申请日：2009-04-06
申请人： Lars-Erik Juhlin
发明人： Lars-Erik Juhlin
IPC分类号： H02J3/36
CPC分类号： H02J3/36 , Y02E60/60
摘要： In a multi-terminal HVDC power transmission network comprising at least three HVDC converter stations interconnected by at least two transmission lines, where at least one of the transmission lines is a long line, an active voltage source device is series connected to one of the transmission lines, which maintains the DC voltage of the transmission lines of the network to be within a predefined voltage range by injecting an additional DC voltage in series with the one transmission line.
摘要翻译：在包括由至少两条传输线互连的至少三个HVDC转换站的多端子HVDC电力传输网络中，其中至少一条传输线是长线，有源电压源装置串联连接到传输线路，其通过与一条传输线串联注入附加的直流电压，将网络的传输线路的直流电压保持在预定的电压范围内。

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