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公开(公告)号：US20080143305A1
公开(公告)日：2008-06-19
申请号：US11793814
申请日：2004-12-22
IPC分类号： G05F1/70
CPC分类号： H02J3/1814 , H02J3/1828 , Y02E40/18 , Y02E40/30
摘要： An apparatus for reactive power compensation in an ac medium voltage power network. The apparatus includes a common connection; a first branch including a first switch, and a first capacitor; and a second branch including a second switch and a second capacitor.
摘要翻译： 一种交流中压电网无功补偿装置。 该装置包括公共连接; 第一分支，包括第一开关和第一电容器; 以及包括第二开关和第二电容器的第二分支。
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公开(公告)号：US07786710B2
公开(公告)日：2010-08-31
申请号：US11793814
申请日：2004-12-22
IPC分类号： G05F1/70
CPC分类号： H02J3/1814 , H02J3/1828 , Y02E40/18 , Y02E40/30
摘要： An apparatus for reactive power compensation in an ac medium voltage power network. The apparatus includes a common connection; a first branch including a first switch, and a first capacitor; and a second branch including a second switch and a second capacitor.
摘要翻译： 一种交流中压电网无功补偿装置。 该装置包括公共连接; 第一分支，包括第一开关和第一电容器; 以及包括第二开关和第二电容器的第二分支。
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公开(公告)号：US5083232A
公开(公告)日：1992-01-21
申请号：US649179
申请日：1991-02-04
摘要： A fault current limiter according to the invention comprises a contact device (K) to the contacts of which is connected a resistor/inductor combination comprising a series connection of a first (R1) and a second (R2) resistor as well as a third resistor/inductor (R3) connected in parallel with the series-connected resistors. The second resistor consists of a resistor with superconducting properties, dimensioned such that the change from superconducting to normally-conducting state occurs when the critical current density of the resistor is attained.
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公开(公告)号：US07245037B2
公开(公告)日：2007-07-17
申请号：US10527753
申请日：2002-09-13
申请人： Lennart Ängquist , Per Halvarsson , Lars Liljestrand , Stefan Valdemarsson , Claes Bengtsson , Willie Wong
发明人： Lennart Ängquist , Per Halvarsson , Lars Liljestrand , Stefan Valdemarsson , Claes Bengtsson , Willie Wong
IPC分类号： H02P9/00
CPC分类号： H02J3/386 , H02J3/1835 , Y02E10/763 , Y02E40/30
摘要： An electric network for generation and transmission of electric power, including a power generating part, a point of common connection for the power generating part, a transmission link, a load network, and a reactive power compensator. The transmission link is coupled between the point of common connection and a grid connection point at the load network. The reactive power compensator is coupled to transmission link. The power generating part includes at least one wind turbine with an electric generator of induction type, coupled to the point of common connection. The reactive power compensator includes a capacitor bank and in parallel coupling to the capacitor bank a controllable inductor having a magnetic core, a main winding for alternating current, and a DC-control winding for direct current. The DC-control winding for control of the magnetic flux is set up by the main winding via orthogonal magnetization of the core.
摘要翻译： 一种用于发电和发电的电网，包括发电部分，用于发电部分的公共连接点，传输链路，负载网络和无功功率补偿器。 传输链路耦合在公共连接点和负载网络处的网格连接点之间。 无功功率补偿器耦合到传输链路。 发电部分包括至少一个具有感应型发电机的风力涡轮机，耦合到公共连接点。 无功功率补偿器包括电容器组，并联并联到电容器组，具有可控电感器，其具有磁芯，用于交流电的主绕组和用于直流电的直流控制绕组。 用于控制磁通量的DC控制绕组由磁芯的正交磁化由主绕组构成。
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公开(公告)号：US20090323245A1
公开(公告)日：2009-12-31
申请号：US11919521
申请日：2006-04-27
申请人： Lars Liljestrand , Magnus Backman
发明人： Lars Liljestrand , Magnus Backman
IPC分类号： H02H3/22
CPC分类号： H01B17/005 , H01F27/04 , H01F27/402 , H02H7/222 , H02H9/044
摘要： A device for reduction of the voltage derivative for an electrical component connected to an electric conductor via an electric bushing. The device protects an electrical component in an electrical apparatus against high voltage derivatives.
摘要翻译： 一种用于通过电气套管降低连接到电导体的电气部件的电压导数的装置。 该装置保护电气设备中的电气部件免受高压衍生。
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公开(公告)号：US20110175460A1
公开(公告)日：2011-07-21
申请号：US12997025
申请日：2008-06-10
申请人： Urban Âström , Lars Liljestrand , Victor Lescale , Magnus Backman
发明人： Urban Âström , Lars Liljestrand , Victor Lescale , Magnus Backman
IPC分类号： H02B1/24
CPC分类号： H01H33/596 , Y10T307/74
摘要： A device for breaking DC currents exceeding 2500 A has a resonance circuit connected in parallel with an interrupter and a surge arrester connected in parallel with the resonance circuit. The resonance circuit has a series connection of a capacitor and an inductance. The relationship of the capacitance in μF to the inductance in μH of the resonance circuit is ≧1.
摘要翻译： 用于断开超过2500A的直流电流的装置具有与断路器并联连接的谐振电路和与谐振电路并联连接的电涌放电器。 谐振电路具有电容器和电感的串联连接。 谐振电路中μF的电容与μH的电感的关系为≥1。
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公开(公告)号：US20120112559A1
公开(公告)日：2012-05-10
申请号：US13340837
申请日：2011-12-30
申请人： Stefan Thorburn , Lars Liljestrand , Ake Petersson
发明人： Stefan Thorburn , Lars Liljestrand , Ake Petersson
IPC分类号： H01H47/00
CPC分类号： H02J3/1828 , Y02E40/30 , Y10T307/273 , Y10T307/76
摘要： An arrangement to control an electrical property of a medium or high voltage AC system including a number n of phases with n being at least two includes a number n of phases, each phase including a series connection of at least two electrical elements with an intermediate connection point between each pair of the at least two electrical elements, where each of the n phases of the arrangement is connected on one side to an original common neutral point and on the other side to one of the n phases of the AC system. The arrangement further includes a number of first switchable interconnections, where the first switchable interconnections are each arranged between two intermediate connection points of two of the n phases of the arrangement, and at least one control unit arranged to control the first switchable interconnections.
摘要翻译： 用于控制包括n个至少为2个相数的n个相位的中等或高压AC系统的电气特性的装置包括n个相位，每相包括至少两个电气元件与中间连接的串联连接 在每对所述至少两个电气元件之间的点之间，其中所述布置的所述n个相的每一个在一侧连接到原始公共中性点，并且在另一侧连接到所述AC系统的n个相中的一个。 该布置还包括多个第一可切换互连，其中第一可切换互连各自布置在该布置的n个相中的两个的两个中间连接点之间，以及至少一个控制单元，其布置成控制第一可切换互连。
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公开(公告)号：US07235751B2
公开(公告)日：2007-06-26
申请号：US10474961
申请日：2002-01-10
CPC分类号： H01H9/542 , H01H9/40 , H01H9/42 , Y10T307/826 , Y10T307/832 , Y10T307/977
摘要： An electric device including an electric switch having a plurality of contact members arranged in series to form a plurality of breaking points arranged in series. One of the contact members at each breaking point is movable. A drive is arranged to actuate each movable contact member. The drive is arranged to effect simultaneous movement of the movable contact members. A commutation circuit is connected in parallel with the electric switch. Each contact member constitutes a part of a contact element, which contact elements are arranged in series. The contact elements have conducting and insulating parts. Every second contact element is movable in relation the others so that movement effects a breaking or closing position of the electric switch. The invention also includes a current limiter such as an electric device and also an electric power network provided with such a current limiter.
摘要翻译： 一种电气设备，包括具有串联布置的多个接触构件的电开关，以形成串联布置的多个断点。 每个断点处的接触件之一是可移动的。 驱动器被布置成致动每个可动接触构件。 驱动器被布置成实现可动接触构件的同时移动。 换向电路与电开关并联连接。 每个接触构件构成接触元件的一部分，其接触元件串联布置。 接触元件具有导电和绝缘部件。 每个第二接触元件可以相对于另一个移动，使得运动影响电开关的断开或闭合位置。 本发明还包括电流限制器，例如电气装置以及设置有这种限流器的电力网络。
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公开(公告)号：US07079367B1
公开(公告)日：2006-07-18
申请号：US10129266
申请日：2000-11-06
申请人： Lars Liljestrand
发明人： Lars Liljestrand
IPC分类号： H02H3/00
CPC分类号： H01H79/00 , H01H1/38 , H01H1/50 , H01H33/285 , H02H3/023
摘要： An electric plant with a safety device, a method for remedying faults in a switchgear installation, and the use of a closing contact to provide security against faults. The plant includes a switchgear installation, consumer loads connected to the switchgear installation, and at least one feeder cable to the switchgear installation. The plant provides a strong consumer network that still has a high degree of safety against damage caused by short-circuiting faults. The plant includes at least two feeder cables, each connected to its own current source such as a transformer or a generator. At least one of the feeder cables is connected by a branch cable to ground. The branch cable is provided with a closing contact, which is normally open. The closing contact is arranged to be activated, i.e. to quickly close the connection to ground, in the event of short-circuiting in the switchgear installation.
摘要翻译： 具有安全装置的电厂，用于补救开关装置中的故障的方法，以及使用闭合触点来提供安全性以防故障。 该设备包括开关柜安装，连接到开关柜安装的消耗负载以及至少一个到开关柜安装的馈电电缆。 该工厂提供了一个强大的消费者网络，仍然具有高度的安全性，防止短路故障引起的损坏。 该工厂包括至少两个馈电电缆，每个馈电电缆连接到其自身的电流源，例如变压器或发电机。 至少一个馈电电缆通过分支电缆连接到地。 分支电缆设有一个常开的闭合触点。 在开关设备短路的情况下，关闭触点被设置为被激活，即快速地关闭与地面的连接。
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公开(公告)号：US6154019A
公开(公告)日：2000-11-28
申请号：US180581
申请日：1998-11-12
CPC分类号： H01F29/14 , H01F2029/143
摘要： A controllable inductor comprises at least a tubular core, a main winding (1) surrounding the core and a control winding (3) passing substantially axially through the core. It is adapted for connection to a three phase alternating current network and has for this sake for each phase (14-16) a main winding (1) for connection to the phase, a core and a control winding, and the control windings of the three phases are electrically connected in series to each other.
摘要翻译： PCT No.PCT / SE97 / 00802 Sec。 371日期：1998年11月12日 102（e）1998年11月12日日期PCT提交1997年5月16日PCT公布。 公开号WO97 / 44795 日期1997年11月27日可控电感器包括至少一个管状芯，围绕芯的主绕组（1）和基本上轴向穿过芯的控制绕组（3）。 它适于连接到三相交流网络，并且为每个相（14-16）提供了用于连接到相的主绕组（1），芯和控制绕组，以及控制绕组 三相相互串联电连接。
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