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公开(公告)号：US11009542B2
公开(公告)日：2021-05-18
申请号：US16496384
申请日：2018-06-20
发明人： Fan Yang , Lei Liu , Xiang Zhang , Chen Zhou , Weiming Pan , Taixun Fang
IPC分类号： G01R31/26 , G01R31/333
摘要： A thyristor valve test system based on cooperation of logic functions of software, wherein the test system comprises: a thyristor valve (5) to be tested, a VBE (3) and a tester (4), and the VBE (3) has a dedicated test mode, the tester (4) provides three steps for each test item. The thyristor valve (5) to be tested and the VBE (3) are connected by optical fibers (1), and the thyristor valve (5) to be tested and the tester (4) are connected by cables (2), and there is no connection between the VBE (3) and the tester (4).
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公开(公告)号：US10014686B2
公开(公告)日：2018-07-03
申请号：US15538209
申请日：2015-09-29
申请人： NR ELECTRIC CO., LTD
发明人： Dongbin Lu , Yongping Wang , Zhenxi Wang , Junsheng Wang , Weiming Pan
CPC分类号： H02J3/36 , H02J3/02 , H02J3/24 , H02J2003/001 , H02M1/4208 , H02M3/33507
摘要： Provided are a commutation control method and a commutation control apparatus. The method includes: detecting whether transient disturbance in a DC transmission system satisfies a disturbance criterion condition; when the transient disturbance satisfies the disturbance criterion condition, determining a maximum trigger delay angle used in a commutation operation performed by a current converter on an inverter side of the DC transmission system, the determined maximum trigger delay angle being smaller than a maximum trigger delay angle used before the transient disturbance; and controlling the current converter on the inverter side of the DC transmission system to perform the commutation operation based on the determined maximum trigger delay angle.
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