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2. 发明公开

EP3125394A4 UNIFIED POWER FLOW CONTROLLER FOR DOUBLE-CIRCUIT LINE 有权
标题翻译： VEREINHEITLICHTESLEISTUNGSFLUSSSTEUERGERÄTFÜRDOPPELSCHALTUNGSLEITUNG
公开(公告)号：EP3125394A4
公开(公告)日：2017-04-26
申请号：EP15796511
申请日：2015-01-12
申请人： NR ELECTRIC CO LTD , NR ELECTRIC ENG CO LTD
发明人： TIAN JIE , LI HAIYING , WANG XINBAO , DONG YUNLONG , SHEN QUANRONG , PAN LEI , LIU CHAO , CHANG BAOLI
IPC分类号： H02J3/18
CPC分类号： H02J3/14 , H02J3/16 , H02J3/1814 , H02J3/46 , Y02E40/18
摘要： An unified power flow controller for a double-circuit transmission line comprises at least one parallel-connection transformer (1), three current converters (4), at least two series-connection transformers (8), a parallel-connection side switching circuit (3), a series-connection side switching circuit (6) and a direct current common bus (5). At least one side of the series-connection transformers is connected with at least one group of by-pass switches (9, 10) in parallel. The alternating current sides of the three current converters are connected to each loop line in series after being connected with at least one series-connection transformer through the series-connection side switching circuit (6). The alternating current sides of the three current converters are connected to an alternating current system after connected with at least one parallel-connection transformer (1) through a parallel-connection side switching circuit starting circuit (2). The direct current sides of the three current converters are connected to the direct current common bus (5) through a transfer switch. With the unified power flow controller, various operating modes can be realized, and when one current converter is in fault, power flow control of the double-circuit transmission line can still be achieved. The unified power flow controller is small in occupied space, low in cost, and excellent in economy, flexibility and reliability.
摘要翻译：一种用于双回路传输线的统一潮流控制器包括至少一个并联变压器（1），三个电流转换器（4），至少两个串联变压器（8），并联连接侧开关电路 3），串联侧开关电路（6）和直流公共母线（5）。串联变压器的至少一侧并联至少一组旁路开关（9,10）。三个电流变换器的交流侧通过串联侧切换电路（6）与至少一个串联连接的变压器相连后，串联在每个环路线上。三个电流转换器的交流侧通过并联连接侧开关电路启动电路（2）与至少一个并联变压器（1）连接后，连接交流电系统。三个电流转换器的直流侧通过转换开关连接到直流公共母线（5）。通过统一的功率流量控制器，可以实现各种工作模式，当一个变流器出现故障时，仍然可以实现双回线路的功率控制。统一的功率流量控制器占用空间小，成本低，经济性，灵活性和可靠性好。

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