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1. 发明公开

EP4254701A1 MULTIPORT HYBRID DIRECT-CURRENT CIRCUIT BREAKER, APPARATUS, SYSTEM, AND CONTROL METHOD THEREFOR 审中-实审
公开(公告)号：EP4254701A1
公开(公告)日：2023-10-04
申请号：EP22762461.6
申请日：2022-02-28
申请人： NR ELECTRIC CO., LTD. , NR Engineering Co., Ltd. , NR Electric Power Electronics Co., Ltd.
发明人： FANG, Taixun , XIE, Yeyuan , YANG, Bing , LV, Wei , WANG, Wenjie , XU, Yuanzhen , CHEN, Yu , SUN, Chao
IPC分类号： H02H7/26
摘要： Disclosed are a multi-port hybrid direct current circuit breaker and a control method thereof. The circuit breaker includes at least two through-flow branches, at least two reversing branches and a breaking branch; each through-flow branch includes a first rapid mechanical switch and a one-way commutation switch which are connected in series; one ends of the through-flow branches are interconnected to form a direct current bus; each reversing branch includes a diode upper bridge arm and a diode lower bridge arm which are connected in series in the same direction; the other end of each through-flow branch is correspondingly connected to an intermediate point of each reversing branch to form a port; the breaking branch includes a one-way breaking switch and a nonlinear resistor which are connected in parallel; the breaking branch and the reversing branches are connected in parallel to form a first common bus and a second common bus.

2. 发明公开

EP3316293A1 THYRISTOR ASSEMBLY RADIATOR FOR DC CONVERTER VALVE 有权
标题翻译：直流转换阀用THYRISTOR组装散热器
公开(公告)号：EP3316293A1
公开(公告)日：2018-05-02
申请号：EP16829756.2
申请日：2016-07-13
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd , NR Electric Power Electronics Co., Ltd.
发明人： ZHANG, Xiang , FANG, Taixun , CAO, Dongming , CHEN, Chihan , ZHANG, Guangtai , LIU, Haibin
IPC分类号： H01L23/473 , H01L23/367 , H03K17/72
CPC分类号： H01L23/473 , H01C1/08 , H01L23/367 , H01L25/117 , H03K17/72
摘要： A thyristor assembly radiator for a DC converter valve. A water discharging port of an N th radiator is communicated with a water discharging port of an (N-2) th radiator. A water feeding port of the N th radiator is communicated with a water feeding port of an (N+2) th radiator. Or, a water feeding port of the N th radiator is communicated with a water feeding port of the (N-2) th radiator, and a water discharging port of the N th radiator is communicated with a water discharging port of the (N+2) th radiator. A water discharging port of an M th radiator is communicated with a water discharging port of an (M-2) th radiator, and a water feeding port of the M th radiator is communicated with a water feeding port of an (M+2) th radiator, or a water feeding port of an M th radiator is communicated with a water feeding port of the (M-2) th radiator, and a water discharging port of the M th radiator is communicated with a water discharging port of an (M+2) th radiator. Water feeding ports of the last two radiators are communicated. According to the radiator, the number of joints of a cooling system is reduced, the risk of leakage is lowered, the operation reliability of a converter valve is improved, the maintenance difficulty is lowered, and the maintenance time is shortened.
摘要翻译：用于直流转换器阀门的晶闸管组件散热器。第N散热器的排水口与第（N-2）散热器的排水口连通。第N散热器的给水口与第（N + 2）散热器的给水口连通。或者，第N个散热器的进水口与第（N-2）个散热器的进水口连通，第N个散热器的出水口与第（N + 2）个散热器的出水口连通， th散热器。第M散热器的出水口与第（M-2）散热器的出水口连通，第M散热器的给水口与第（M + 2）散热器的给水口连通或者第M散热器的给水口与第（M-2）散热器的给水口连通，第M散热器的出水口与（M + 2）散热器的出水口连通， th散热器。最后两个散热器的供水口相互通信。根据散热器，减少了冷却系统的接头数量，降低了泄漏的风险，改善了换流阀的操作可靠性，维修难度降低，维修时间缩短。

3. 发明公开

EP3407446A1 BRIDGE-TYPE CIRCUIT, AND DIRECT CURRENT BREAKING DEVICE AND CONTROL METHOD THEREOF 审中-公开
公开(公告)号：EP3407446A1
公开(公告)日：2018-11-28
申请号：EP17785413.0
申请日：2017-04-17
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd.
发明人： CAO, Dongming , FANG, Taixun , XIE, Yeyuan , YANG, Bing , SHI, Wei , LV, Wei , WANG, Wenjie , LIU, Bin , WANG, Tao
IPC分类号： H02H3/02 , H02H3/087 , H02H3/06
CPC分类号： H02H3/02 , H02H3/06 , H02H3/087
摘要： A bridge-type circuit comprises a H-bridge switch module and a buffering and reclosing module. The H-bridge switch module comprises four power semiconductor switch devices (Ql, Q2, Q3, Q4). Every two of the four power semiconductor switch devices are connected in series in the same direction to form a bridge arm, and the two bridge arms are further connected in parallel. Middle points of the two bridge arms respectively serve as an input terminal and an output terminal. The buffering and reclosing module is connected in parallel with the two bridge arms of the full bridge module. Also provided are a direct current breaking device formed by connecting the above bridge-type circuits in cascade and a control method thereof. The direct current breaking device is provided with the buffering and reclosing module, such that line voltage fluctuation generated during a reclosing operation is small.

4. 发明授权

EP2953150B1 APPARATUS FOR LIMITING CURRENT OF CIRCUIT OR BREAKING CURRENT, AND CONTROL METHOD THEREOF 有权
标题翻译：限制电路电流或击穿电流的装置及其控制方法
公开(公告)号：EP2953150B1
公开(公告)日：2017-09-20
申请号：EP13873552.7
申请日：2013-12-27
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： WANG, Yu , CAO, Dongming , FANG, Taixun , YANG, Hao , YANG, Bing , SHI, Wei , LU, Wei
IPC分类号： H01H33/00 , H01H9/54
CPC分类号： H02H3/08 , H01H9/542 , H01H9/548 , H01H33/596 , H01H71/1045 , H01H2009/0083 , H02H9/02

5. 发明公开

EP3958454A1 SOLID-STATE TRANSFORMER 无效
公开(公告)号：EP3958454A1
公开(公告)日：2022-02-23
申请号：EP20854635.8
申请日：2020-07-15
申请人： NR ELECTRIC CO., LTD. , NR Engineering Co., Ltd.
发明人： ZHANG, Zhongfeng , XIE, Yeyuan , CAO, Dongming , FANG, Taixun , SHENG, Xiaodong , YANG, Chen , LIAN, Jianyang
IPC分类号： H02M5/458
摘要： A solid-state transformer comprises a plurality of power units (100). Each of the plurality of power units (100) comprises a high-voltage side module (110), a low-voltage side module (120), and an isolation transformer (130). The isolation transformer (130) comprises a high-voltage winding (131), a low-voltage winding (132), and an iron core (133). The high-voltage winding (131) is wound on the iron core (133) and connected to the high-voltage side module (110). The low-voltage winding (132) is wound on the iron core (133) and connected to the low-voltage side module (120). The iron core (133) is in near equipotential connection to the high-voltage side module (110) or the low-voltage side module (120) by means of a conductive medium to fix the floating potential of the iron core (133).

6. 发明公开

EP3588112A1 THYRISTOR VALVE TEST SYSTEM BASED ON COOPERATION OF LOGICAL FUNCTIONS OF SOFTWARE 审中-实审
公开(公告)号：EP3588112A1
公开(公告)日：2020-01-01
申请号：EP18832716.7
申请日：2018-06-20
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd.
发明人： YANG, Fan , LIU, Lei , ZHANG, Xiang , ZHOU, Chen , PAN, Weiming , FANG, Taixun
IPC分类号： G01R31/26
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).

7. 发明公开

EP3477809A1 CLOSING CONTROL METHOD FOR HIGH-VOLTAGE DIRECT-CURRENT CIRCUIT BREAKER 有权
公开(公告)号：EP3477809A1
公开(公告)日：2019-05-01
申请号：EP17838379.0
申请日：2017-04-25
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd.
发明人： SHI, Wei , YANG, Bing , LV, Wei , WANG, Wenjie , XIE, Yeyuan , FANG, Taixun , CAO, Dongming
IPC分类号： H02H7/26
摘要： A closing control method for a high-voltage DC circuit breaker. The method comprises: closing breaking units of the transfer branch (2) group by group, then closing the main branch (1), and finally open the transfer branch. During the process of closing the breaking units of the transfer branch group by group, determine whether there is a fault in the power transmission system after closing current breaking unit group. if there is no fault, proceed to close the next breaking unit group until all breaking unit groups are closed before proceeding to the next step; if there is a fault, all the breaking units that have been closed are opened and the closing operation is ended. The method can pre-charge the power transmission system during the closing process of the high-voltage DC circuit breaker, and lower the overvoltage and system oscillation caused by the closing operation.

8. 发明公开

EP2953150A1 APPARATUS FOR LIMITING CURRENT OF CIRCUIT OR BREAKING CURRENT, AND CONTROL METHOD THEREOF 有权
标题翻译：设备以便在其限制了一个开关或控制方法电源和关闭
公开(公告)号：EP2953150A1
公开(公告)日：2015-12-09
申请号：EP13873552.7
申请日：2013-12-27
申请人： NR Electric Co., Ltd. , NR Engineering Co., Ltd
发明人： WANG, Yu , CAO, Dongming , FANG, Taixun , YANG, Hao , YANG, Bing , SHI, Wei , LU, Wei
IPC分类号： H01H33/00
CPC分类号： H02H3/08 , H01H9/542 , H01H9/548 , H01H33/596 , H01H71/1045 , H01H2009/0083 , H02H9/02
摘要： An apparatus for limiting a current of a circuit or breaking a current, and a control method thereof are disclosed. The apparatus includes a current breaking branch (29) and a bridge branch. The bridge branch includes two bridge arms formed by four identical current commutation branches. Every two of the four current commutation branches are connected in series, and the formed two bridge arms are then connected in parallel. The two bridge arms are both connected in parallel to the current breaking branch, and middle points of the two bridge arms are separately connected to two ends of a circuit. Each current commutation branch includes at least one high-speed isolation switch (6) and at least one bidirectional power semiconductor switch (10) that are connected in series. The apparatus can turn off currents in two directions.
摘要翻译：用于限制电路的电流或切断电流的控制方法的装置，以及它们的被游离缺失光盘。该装置包括一个电流切断分支（29）和一个桥支路。桥支路包括由四个相同的电流换向分支形成的两个桥臂。四个电流换向分支机构的每两个串联连接，然后形成了两个桥臂并联连接。所述两个桥臂并联连接这两个的电流切断分支，两个桥臂的中间点分别连接到电路的两端。每个电流换向分支包括至少一个高速隔离开关（6），并且被串联连接的至少一个双向功率半导体开关（10）。该装置可以在两个方向关闭电流。

9. 发明公开

EP3376637A1 CONVERTER VALVE FAULT WARNING METHOD AND SYSTEM 有权转让
公开(公告)号：EP3376637A1
公开(公告)日：2018-09-19
申请号：EP17759247.4
申请日：2017-03-01
申请人： NR Electric Co., Ltd. , NR Electric Engineering Co., Ltd.
发明人： GAO, Shengfu , FANG, Taixun , WANG, Yongping , ZHANG, Xiang , PAN, Weiming , YUAN, Ming , ZHOU, Guqing
IPC分类号： H02J13/00 , G01R31/08
CPC分类号： G01R31/08 , H02H1/00 , H02J13/00 , H02M1/088 , H02M1/32 , H02M7/7575 , Y02E60/725 , Y04S10/20
摘要： Disclosed is a method for providing warning about a failure in a converter valve. The method comprises: within a predetermined time range, recording time information of status indication signals fed back by thyristor control units (TCU) of a converter valve, performing statistics and comparison of the pieces of time information using a bias statistics method, marking a thyristor level whose bias exceeds a preset value, and determining a probability of failure in the thyristor according to the marking result. Also disclosed is a system for providing warning about a failure in a converter valve. The system comprises a register array used to store bias data of thyristor levels of a converter valve and a high-speed processor used to process, using a bias statistics method, status indication signals fed back by TCUs. The solution of the present invention can identify a thyristor level with a relatively high probability of failure, achieve early warning, and provide a reference for device replacement, thereby reducing a probability of outage of a direct current system due to a failure of a thyristor level, and providing references for device performance optimization and circuit design optimization of a converter valve.

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