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    NOVEL COMBINED DC CIRCUIT BREAKER AND APPLICATION METHOD THEREFOR
    2.
    发明公开
    NOVEL COMBINED DC CIRCUIT BREAKER AND APPLICATION METHOD THEREFOR 审中-公开

    公开(公告)号：EP3490091A1

    公开(公告)日：2019-05-29

    申请号：EP17830283.2

    申请日：2017-05-22

    申请人： GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE CO., LTD. ,  State Grid Corporation of China

    发明人： TANG, Guangfu ,  HE, Zhiyuan ,  ZHOU, Wandi ,  WEI, Xiaoguang ,  ZHANG, Sheng ,  ZHAO, Yan ,  LUO, Xiang ,  LI, Pengzhi

    IPC分类号： H02H7/26

    摘要： A novel combined direct current circuit breaker is provided, which includes a transfer branch, an energy absorption branch, at least two primary branches and at least two secondary branches; the transfer branch is connected in parallel with the energy absorption branch; the primary branches are in one-to-one correspondence with the second branches; the primary branches are connected with direct current outgoing lines of a direct current busbar in a high-voltage direct current power transmission system; the secondary branches are connected in series with the transfer branches and then connected in parallel with two ends of the primary branches corresponding to the secondary branches. Compared with the conventional art, the novel combined direct current circuit breaker and an application method thereof improve application economy of the high-voltage direct current circuit breaker in a flexible direct current power grid, and are favorable for construction of the direct current power grid and popularization and application of a hybrid direct current circuit breaker.

    PASSIVE HIGH-VOLTAGE DIRECT-CURRENT CIRCUIT BREAKER AND IMPLEMENTATION METHOD THEREFOR
    6.
    发明公开
    PASSIVE HIGH-VOLTAGE DIRECT-CURRENT CIRCUIT BREAKER AND IMPLEMENTATION METHOD THEREFOR 审中-公开
    通用电气设备有限公司

    公开(公告)号：EP3131166A1

    公开(公告)日：2017-02-15

    申请号：EP14888645.0

    申请日：2014-12-30

    申请人： State Grid Corporation of China (SGCC) ,  State Grid Smart Grid Research Institute ,  North China Grid Company Limited

    发明人： ZHOU, Wandi ,  WEI, Xiaoguang ,  GAO, Chong ,  HE, Zhiyuan ,  ZHANG, Sheng

    IPC分类号： H02H3/087

    CPC分类号： H02H3/087 ,  H01H33/596

    摘要： A passive high-voltage direct-current circuit breaker and an implementation method therefor. The high-voltage direct-current circuit breaker is connected in a direct-current system in series, and comprises an energy absorption branch, a main branch and a current transfer branch which are connected in parallel, wherein the current transfer branch comprises first current transfer branches (T1, T2) and second current transfer branches(T3, T4); the energy absorption branch is composed of a nonlinear resistor (MOV); and the main branch comprises at least two groups of high-speed mechanical switches (Kl, K2) and at least two groups of full controlled device modules which are connected in series. Since the circuit has a simple topology structure, is simple and convenient to control, and is flexible to apply, the energy required by injecting a current into a capacitor can be obtained from a system without configuring an auxiliary power source, thereby improving the reliability of an apparatus. The used power electronic devices are mainly half controlled thyristors, so that the series connection technology is mature, the capability for current segmentation is strong, the level of withstand voltage is high, the expansion capability is strong, and the costs of devices are low.

    摘要翻译： 一种无源高压直流断路器及其实现方法。 高压直流断路器串联连接在直流系统中，并联有并联连接的能量吸收支路，主支路和电流传输支路，其中电流传输支路包括第一电流传输 分支（T1，T2）和第二电流传输分支（T3，T4）; 能量吸收分支由非线性电阻（MOV）组成; 并且主分支包括串联连接的至少两组高速机械开关（K1，K2）和至少两组全受控设备模块。 由于电路具有简单的拓扑结构，控制简单方便，灵活的应用，可以从不配置辅助电源的系统中获得将电流注入电容器所需的能量，从而提高可靠性 一种装置 二手电力电子设备主要是半控制晶闸管，串联连接技术成熟，电流分割能力强，耐压水平高，扩展能力强，设备成本低。