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公开(公告)号：US3883790A
公开(公告)日：1975-05-13
申请号：US44087374
申请日：1974-02-08
Applicant: ASEA AB
Inventor： HAMMARLUND BERTIL , JUHLIN LARS-ERIK
CPC classification number: H02H7/268 , H02J3/36 , H02M7/1626 , H02M7/7575 , Y02E60/60
Abstract: A power transmission for high voltage direct current includes a direct current line and converter stations connected to the direct current line, with alternating current networks each connected to one of the converter stations. Each converter station includes at least two converters connected in parallel and is provided with a current control system to set the total current of the station as well as the current in the individual converters in accordance with a current order. Each station is provided with an arrangement for sensing the current and/or voltage on the d.c. line, which is connected to the current control system of the station and which reduces the current order set in the station in response to sudden interference in current and/or voltage. The station operating as an inverter is provided with an arrangement responsive to the disappearance of the current in one of the inverters of the station to limit the internal direct voltage of the other inverter to approximately zero.
Abstract translation: 用于高压直流的电力传输包括直流线路和连接到直流线路的转换器站，各交流电网络连接到转换站之一。 每个转换器站包括并联连接的至少两个转换器，并且设置有电流控制系统，以根据当前顺序来设置站的总电流以及各个转换器中的电流。 每个站都设有用于感测直流电流和/或电压的装置。 线路，其连接到站的当前控制系统，并且响应于电流和/或电压中的突然干扰而减小站中设置的当前顺序。 作为逆变器工作的站设置有响应于站中的一个逆变器中的电流消失的装置，以将另一个逆变器的内部直流电压限制为近似为零。
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3.发明授权Device for indicating faults in different parts of a direct current network,which parts are connected to each other 失效用于指示直接电流网络不同部件中的故障的设备，其中的每个部件都连接到每个其他网络
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