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1. 发明申请

US20150295509A1 METHOD AND ASSOCIATED TRANSMISSION SYSTEM 有权
标题翻译：方法和相关传输系统
公开(公告)号：US20150295509A1
公开(公告)日：2015-10-15
申请号：US14430632
申请日：2012-10-02
申请人： ABB TECHNOLOGY LTD
发明人： Stefan Thorburn , Nicklas Johansson
IPC分类号： H02M7/04
CPC分类号： H02J3/36 , H02J3/38 , H02J5/00 , H02M7/04 , Y10T307/658
摘要： It is presented a method executed in a transmission system, the transmission system comprising an AC grid, a DC grid and at least two AC/DC converters connected between the AC grid and DC grid. The method comprises the steps of: obtaining set points for each one of the at least two AC/DC converters, each set point comprising a magnitude and direction of power through the respective AC/DC converter during normal operation generating, based on the set points, a virtual AC grid, the virtual AC grid corresponding to AC behaviour of the DC grid, as viewed from each AC side of the at least two AC/DC converters; and controlling the at least two AC/DC converters to mimic a behaviour in accordance with the virtual AC grid. A corresponding transmission system is also presented.
摘要翻译：提出了一种在传输系统中执行的方法，该传输系统包括AC电网，DC电网和连接在AC电网和DC电网之间的至少两个AC / DC转换器。该方法包括以下步骤：获得所述至少两个AC / DC转换器中的每一个的设定点，每个设定点基于设定点，包括在正常操作生成期间通过相应的AC / DC转换器的功率的大小和方向，所述虚拟AC电网，所述虚拟AC电网对应于所述DC电网的AC行为，从所述至少两个AC / DC转换器的每个AC侧观察; 以及控制所述至少两个AC / DC转换器以模拟根据所述虚拟AC电网的行为。还提出了相应的传输系统。

2. 发明授权

US09461473B2 Method and apparatus for damping oscillations in a power system 有权
标题翻译：用于阻尼电力系统振荡的方法和装置
公开(公告)号：US09461473B2
公开(公告)日：2016-10-04
申请号：US15023898
申请日：2013-10-03
申请人： ABB TECHNOLOGY LTD
发明人： Lennart Harnefors , Lidong Zhang , Nicklas Johansson
IPC分类号： H02J3/36 , H02J3/24
CPC分类号： H02J3/24 , H02J3/36 , H02J2003/365 , Y02E60/60
摘要： Embodiments disclose using a pairing or pairings of terminals in a DC power system including a plurality of terminals to implement power oscillation damping (POD), where the DC power system is connectable to at least one AC power system. The active and/or reactive power of the terminals in the pairing may be controlled or modulated in a similar manner such that no power imbalance in the DC power system is created. For example, POD may be implemented by means of active and/or reactive power modulation by pairing two terminals in the DC power system) such that their active and/or reactive powers are controlled or modulated in the same or substantially the same manner or identically but with the opposite sign.
摘要翻译：实施方式公开了在包括多个端子的DC电力系统中使用配对或配对的端子来实现功率振荡阻尼（POD），其中DC电力系统可连接到至少一个AC电力系统。可以以类似的方式控制或调制配对中的终端的有功和/或无功功率，使得不产生直流电力系统中的功率不平衡。例如，可以通过在DC电力系统中配对两个终端的有源和/或无功功率调制实现POD），使得它们的有功和/或无功功率以相同或基本相同的方式或相同的方式被控制或调制但与此相反。

3. 发明授权

US09312696B2 Method and associated transmission system 有权
标题翻译：方法及相关传输系统
公开(公告)号：US09312696B2
公开(公告)日：2016-04-12
申请号：US14430632
申请日：2012-10-02
申请人： ABB TECHNOLOGY LTD
发明人： Stefan Thorburn , Nicklas Johansson
IPC分类号： H02J1/00 , H02J3/00 , H02J3/36 , H02J3/38 , H02J5/00 , H02M7/04
CPC分类号： H02J3/36 , H02J3/38 , H02J5/00 , H02M7/04 , Y10T307/658
摘要： It is presented a method executed in a transmission system, the transmission system comprising an AC grid, a DC grid and at least two AC/DC converters connected between the AC grid and DC grid. The method comprises the steps of: obtaining set points for each one of the at least two AC/DC converters, each set point comprising a magnitude and direction of power through the respective AC/DC converter during normal operation generating, based on the set points, a virtual AC grid, the virtual AC grid corresponding to AC behavior of the DC grid, as viewed from each AC side of the at least two AC/DC converters; and controlling the at least two AC/DC converters to mimic a behavior in accordance with the virtual AC grid. A corresponding transmission system is also presented.
摘要翻译：提出了一种在传输系统中执行的方法，该传输系统包括AC电网，DC电网和连接在AC电网和DC电网之间的至少两个AC / DC转换器。该方法包括以下步骤：获得所述至少两个AC / DC转换器中的每一个的设定点，每个设定点基于设定点，包括在正常操作生成期间通过相应的AC / DC转换器的功率的大小和方向，所述虚拟AC电网，所述虚拟AC电网对应于所述DC电网的AC行为，从所述至少两个AC / DC转换器的每个AC侧观察; 以及控制所述至少两个AC / DC转换器以模拟根据所述虚拟AC电网的行为。还提出了相应的传输系统。

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