|
|
|
| Reserch on the DC Fault Isolating Techique base on Hybrid Bypass in MMC-HVDC |
| Xie Zhide, Yang Mingfa |
| College of Electrical & Automation Engineering, Fuzhou University, Fuzhou 350116 |
|
|
|
|
Abstract Modular multilevel converter (MMC) with half-bridge sub-modules (SMs) is the most promising technology for high voltage direct current (HVDC) grids, but it lacks DC-fault clearance capability.Aiming at the frequent transient DC faults in flexible HVDC, the paper proposes a way of DC fault isolation based on hybrid bypass in MMC-HVDC. When DC-fault occurs, get the bypass thyristor connected, then remove the residual current of the bridge arm by virtue of arrester and isolate the DC line by a fast mechanical switch. Hybrid bypass DC-fault isolation scheme can isolate immediately the MMC and DC transmission line, and the MMC is capable of operating in STATCOM mode after fault isolation. A model of a two-terminal monopolar HVDC grid is developed in PSCAD/EMTDC.
|
|
Published: 06 December 2017
|
|
|
|
| Cite this article: |
|
Xie Zhide,Yang Mingfa. Reserch on the DC Fault Isolating Techique base on Hybrid Bypass in MMC-HVDC[J]. Electrical Engineering, 2017, 18(11): 39-43.
|
|
|
|
| URL: |
|
http://dqjs.cesmedia.cn/EN/Y2017/V18/I11/39
|
[1] 李斌, 李晔, 何佳伟. 具有直流故障清除能力的MMC 子模块关键性能研究[J]. 中国电机工程学报, 2016, 36(8): 2114-2122.
[2] 朱晋, 韦统振, 李东, 等. 全桥变桥臂电压源变流器拓扑参数及恒压策略研究[J]. 中国电机工程学报, 2013, 33(21): 26-35.
[3] 郝瑞祥, 杨晓峰, 薛尧, 等. 一种具有直流故障限流能力的模块化多电平换流器[J]. 电工技术学报, 2017, 32(6): 172-180.
[4] 秦海鸿, 赵海伟, 马策宇, 等. 基于模块化多电平变换器的静止同步补偿器桥臂不对称及其控制策略[J]. 电工技术学报, 2016, 31(14): 183-192.
[5] 贺小明, 范岩, 鲍尖措. MMC-STATCOM在变电站应用中的研究[J]. 电气技术, 2015, 16(5): 44-48.
[6] 许建中, 赵鹏豪, 姜伟, 等. 具备直流故障穿越能力的混合MMC可靠分析和冗余配置方法[J]. 中国电机工程学报, 2016, 36(4): 953-960.
[7] 郭敬梅, 曾德辉, 王钢, 等. 基于辅助电路的MMC- HVDC直流故障处理策略[J]. 电力系统自动化, 2016, 40(16): 90-97.
[8] 郭玥, 张红斌, 杨卫红, 等. 柔性直流输电在城市配电网应用中的仿真研究[J]. 电气技术, 2015, 16(6): 14-19.
[9] 李斌, 李晔, 何佳伟. 基于模块化多电平换流器的直流系统故障处理方案[J]. 中国电机工程学报, 2016, 36(7): 1944-1950.
[10] 张祖安, 黎小林, 陈名, 等. 混合式高压直流断路器中的快速机械开关研究[J]. 南方电网技术, 2016, 10(4): 57-62.
[11] 徐政, 刘高任, 张哲任. 柔性直流输电网的故障保护原理研究[J]. 高电压技术, 2017, 43(1): 1-8.
[12] Schmitt D, Wang Y, Weyh T, et al. DC-side fault current management in extended multiterminal- HVDC-grids[C]//9th International Multi-Conference on Systems, 2012: 1-5. |
|
|
|
2017, Vol. 18 
