公开(公告)号：US3943427A

公开(公告)日：1976-03-09

申请号：US487796

申请日：1974-07-11

申请人： Jury Georgievich Tolstov ,  Vladimir Efremovich Skorovarov ,  Boris Ilich Grinshtein ,  Valentina Gavrilovna Stepanova ,  Ivan Pavlovich Bashkatov ,  Jury Danilovich Vinitsky ,  Valery Ottovich Balyasinsky ,  Valery Pavlovich Zhmurov ,  Alexandr Venediktovich Natalkin ,  Grigory Bentsionovich Lazarev

发明人： Jury Georgievich Tolstov ,  Vladimir Efremovich Skorovarov ,  Boris Ilich Grinshtein ,  Valentina Gavrilovna Stepanova ,  Ivan Pavlovich Bashkatov ,  Jury Danilovich Vinitsky ,  Valery Ottovich Balyasinsky ,  Valery Pavlovich Zhmurov ,  Alexandr Venediktovich Natalkin ,  Grigory Bentsionovich Lazarev

IPC分类号： H02H7/12 ,  H02H20060101 ,  H02H9/04 ,  H02H9/06 ,  H02M1/00 ,  H02M1/088 ,  H02M7/19 ,  H02M1/18

CPC分类号： H02H9/06 ,  H02H7/12 ,  H02H9/043 ,  H02M1/088 ,  H02M7/19

摘要： An apparatus for protecting the thyristors of a high-voltage controlled converter against overvoltage, said thyristors being connected to form a chain of successively connected thyristor modules, each of which comprises at least one thyristor. The protecting apparatus consists of an additional circuit comprising at least one link formed by two avalanche diodes connected in series opposition, said circuit being connected parallel to the chain of thyristor modules. The additional circuit serves to limit the magnitude of the voltage applied to the thyristor modules. The protecting apparatus further includes a surge arrester controlled by signals from a current sensor whose input is connected in said additional circuit. In accordance with signals from the current sensor, the controlled surge arrester limits the voltage across the additional circuit in case of overvoltage. The apparatus is intended for protecting a chain of thyristor modules of high-voltage controlled converters used, for instance, in rectifier and inverter substations of direct current transmission lines, against overvoltage.

摘要翻译： 一种用于保护高压控制转换器的晶闸管免受过电压的装置，所述晶闸管被连接以形成连续连接的可控硅模块链，每个晶闸管模块包括至少一个晶闸管。 该保护装置包括一个附加电路，该附加电路包括至少一个由串联相对的两个雪崩二极管形成的链路，所述电路与晶闸管模块链平行连接。 附加电路用于限制施加到晶闸管模块的电压的大小。 保护装置还包括由来自电流传感器的信号控制的电涌放电器，其输入端连接在所述附加电路中。 根据来自电流传感器的信号，受过电压控制的避雷器在过电压情况下会限制额外电路的电压。 该装置旨在用于保护用于例如直流输电线路的整流器和逆变器变电站中的高压控制转换器的可控硅模块链，以防过电压。