公开(公告)号：US20100053830A1

公开(公告)日：2010-03-04

申请号：US12528248

申请日：2008-02-26

Applicant: Ulf Andersson ,  Hans Bjorklund ,  John Daniel ,  David Dickmander

Inventor： Ulf Andersson ,  Hans Bjorklund ,  John Daniel ,  David Dickmander

IPC: H02H3/20

CPC classification number: G05F1/00 ,  H02H3/023 ,  H02H7/04

Abstract: A method and apparatus for mitigating dynamic overvoltage (DOV) in an AC network. A distribution and power transformer has its primary connected to the high voltage bus of the network and its secondary connected to a switching device. Upon the occurrence of a condition known to cause a DOV and the DOV a control system cause the switching device to change from a nonconductive mode to a conductive mode in less than the time for one cycle of the operating frequency of the AC network. This change in switching device conduction places a short circuit across the transformer secondary.

Abstract translation: 一种用于减轻AC网络中的动态过电压（DOV）的方法和装置。 配电和电力变压器主要连接到网络的高压母线，其二次连接到开关装置。 在发生已知导致DOV和DOV的情况下，控制系统使得开关装置在小于AC网络的工作频率的一个周期的时间内从非导通模式改变为导通模式。 开关器件导通的这种变化在变压器二次侧产生短路。

公开(公告)号：US08411400B2

公开(公告)日：2013-04-02

申请号：US12528248

申请日：2008-02-26

Applicant: Ulf Andersson ,  Hans Bjorklund ,  John Daniel ,  David Dickmander

Inventor： Ulf Andersson ,  Hans Bjorklund ,  John Daniel ,  David Dickmander

IPC: H02H3/00

CPC classification number: G05F1/00 ,  H02H3/023 ,  H02H7/04

Abstract: A distribution and power transformer has its primary connected to the high voltage bus of the network and its secondary connected to a switching device. Upon the occurrence of a condition known to cause a dynamic overvoltage (DOV) and the occurrence of the DOV, a control system causes the switching device to change from a nonconductive mode to a conductive mode in less than the time for one cycle of the operating frequency of the AC network. This change in switching device conduction places a short circuit across the transformer secondary and thus mitigates the DOV.

Abstract translation: 配电和电力变压器主要连接到网络的高压母线，其二次连接到开关装置。 在发生已知导致动态过电压（DOV）和DOV的发生的状况的情况下，控制系统使得开关装置在小于操作的一个周期的时间内使开关装置从非导通模式改变为导通模式 交流网络的频率。 开关器件导通的这种变化在变压器二次侧产生短路，从而减轻了DOV。