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.

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。

公开(公告)号：EP3511955A1

公开(公告)日：2019-07-17

申请号：EP17848108.1

申请日：2017-09-05

申请人： NR Electric Co., Ltd. ,  NR Engineering Co., Ltd. ,  NR Electric Power Electronics Co., Ltd.

发明人： ZHANG, Xiang ,  CHEN, Chihan ,  LI, Zhao ,  SONG, Ge ,  ZHENG, Li ,  YANG, Fan

IPC分类号： H01C1/02

摘要： A housing structure of a planar resistor is provided, wherein electrode extraction ends (4) of the planar resistor are on the same side of the resistor. A housing structure body (1) is made of an insulating material covering the surface of the resistor. An insulating structure (3) having a groove opening facing toward or away from the resistor is provided around each electrode extraction end (4) of the resistor. The insulating structure (3) is configured to be a multi-tooth or multi-groove insulating structure. Compared with the prior art, a structure having teeth or slots increases the surface creepage distance of an insulating material between two electrodes. Since the electrodes are mounted toward different directions, and a multi-groove opening is designed to face inward or outward, dust and dirt can hardly enter the resistor, so that the operating reliability and maintenance-free property of the resistor are improved.

公开(公告)号：EP4362456A1

公开(公告)日：2024-05-01

申请号：EP23825364.5

申请日：2023-08-16

申请人： State Grid Corporation of China ,  State Grid Economic and Technological Research Institute Co., Ltd ,  NR Electric Co., Ltd. ,  XJ Group Corporation ,  Nari Technology Co. Ltd ,  Beijing SGITG Accenture Information Technology Center Co., Ltd. ,  Huawei Technologies Co., Ltd.

发明人： JIN, Wei ,  WANG, Qing ,  GUO, Xianshan ,  LYU, Jun ,  LIU, Siyuan ,  ZHANG, Xiang ,  WANG, Yanguo ,  ZHANG, Zhanguo ,  WANG, Haifeng ,  TONG, Chong ,  LI, Ming ,  CHENG, Wei ,  ZHAO, Ning ,  CHEN, Zhou ,  HOU, Xiaojun ,  ZHAO, Hanqing

IPC分类号： H04N7/18

摘要： The application discloses a monitoring system and method based on a digital converter station, and the monitoring system includes a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side; the monitoring terminal at each level includes a communication module, a human-machine interaction module, a device status monitoring module, a device alarm management module, a video fusion processing module, and a data transmission adjustment and control module. The video fusion processing module is deployed at the monitoring terminal at each level respectively, so that the monitoring terminal at each level may respond locally to a monitoring retrieval request of a user at each level, it is unnecessary for the station side to respond to the monitoring retrieval request of the user at each level completely, the user may directly view video fusion images locally without retrieving the images from a remote end, so that on the premise of limited network bandwidth resources, network delay may be effectively reduced, real-time performance of displaying video images may be improved, and usage effect and user experience of the video fusion application may be improved.

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).