公开(公告)号：US09972988B2

公开(公告)日：2018-05-15

申请号：US14357169

申请日：2012-05-21

申请人： Chuang Fu ,  Hong Rao ,  Shukai Xu ,  Xiaolin Li

发明人： Chuang Fu ,  Hong Rao ,  Shukai Xu ,  Xiaolin Li

IPC分类号： H02G7/16 ,  H02J3/02

CPC分类号： H02G7/16 ,  H02J3/02 ,  Y10T307/747

摘要： A multi-functional automatic switching circuit for direct current ice melting and a switching method thereof are provided. The automatic switching circuit comprises at least one sub-switching circuit. The sub-switching circuit comprises a six-pulse current converter (R) with no saturable reactor, six reactors (L1a, L1b, L1c, L2a, L2b, and L2c), three three-phase knife switches (Sac1, Sac2, and Sac3), and five single-phase knife switches (SV1, SV2, SV3, SV4, and SV5). The sub-switching circuits in series connection or parallel connection, four direct current side switching knife switches (Sdc1, Sdc2, Sdc3, and Sdc4), an isolation knife switch (K), a breaker (QF) and a control and protection system (CP) may form an automatic switching circuit for six-pulse or twelve-pulse direct current ice melting. The automatic switching circuit with no saturable reactor reduces noise during operation, achieves mutually automatic switching among modes of reactor switching, ice melting and test, and may complete the through-flow test of the automatic switching circuit without switching in a power transmission line, thereby solving the problem of daily operation and maintenance.

公开(公告)号：US20150042176A1

公开(公告)日：2015-02-12

申请号：US14357169

申请日：2012-05-21

申请人： Chuang Fu ,  Hong Rao ,  Shukai Xu ,  Xiaolin Li

发明人： Chuang Fu ,  Hong Rao ,  Shukai Xu ,  Xiaolin Li

IPC分类号： H02G7/16 ,  H02J3/02

CPC分类号： H02G7/16 ,  H02J3/02 ,  Y10T307/747

摘要： A multi-functional automatic switching circuit for direct current ice melting and a switching method thereof are provided. The automatic switching circuit comprises at least one sub-switching circuit. The sub-switching circuit comprises a six-pulse current converter (R) with no saturable reactor, six reactors (L1a, L1b, L1c, L2a, L2b, and L2c), three three-phase knife switches (Sac1, Sac2, and Sac3), and five single-phase knife switches (SV1, SV2, SV3, SV4, and SV5). The sub-switching circuits in series connection or parallel connection, four direct current side switching knife switches (Sdc1, Sdc2, Sdc3, and Sdc4), an isolation knife switch (K), a breaker (QF) and a control and protection system (CP) may form an automatic switching circuit for six-pulse or twelve-pulse direct current ice melting. The automatic switching circuit with no saturable reactor reduces noise during operation, achieves mutually automatic switching among modes of reactor switching, ice melting and test, and may complete the through-flow test of the automatic switching circuit without switching in a power transmission line, thereby solving the problem of daily operation and maintenance.

摘要翻译： 提供一种用于直流冰熔化的多功能自动切换电路及其切换方法。 自动切换电路包括至少一个子开关电路。 子开关电路包括不具有可饱和电抗器的六脉冲电流转换器（R），六个电抗器（L1a，L1b，L1c，L2a，L2b和L2c），三个三相刀开关（Sac1，Sac2和Sac3 ）和五个单相刀开关（SV1，SV2，SV3，SV4和SV5）。 串联或并联的子开关电路，四个直流侧切换刀开关（Sdc1，Sdc2，Sdc3和Sdc4），隔离刀开关（K），断路器（QF）和控制和保护系统 CP）可以形成用于六脉冲或十二脉冲直流冰融化的自动切换电路。 无饱和电抗器的自动切换电路降低了运行中的噪声，实现了电抗器切换，冰融解和测试的各种模式之间的相互自动切换，并且可以在不传输输电线的情况下完成自动切换电路的通流测试， 解决日常维护的问题。