Analysis of DC Fault Protection on the Overhead Lines in Bipolar MMC-HVDC Systems

被引：0
|
作者：
Su, Jianshen [1 ]
Jin, Tao [1 ]
Guo, Jingdong [2 ]
Wang, Yen-Chun [1 ]
机构：
[1] Fuzhou Univ, Dept Elect Engn, Fuzhou, Fujian, Peoples R China
[2] State Grid Fujian Elect Power Res Inst, Fuzhou, Fujian, Peoples R China
来源：
2018 2ND IEEE CONFERENCE ON ENERGY INTERNET AND ENERGY SYSTEM INTEGRATION (EI2) | 2018年
关键词：
HVDC; fault protection; overhead lines; MMC; MODULAR MULTILEVEL CONVERTERS; CELLS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
DC fault is an important issue of high voltage direct current (HVDC) transmission based on modular multilevel converter (MMC), especially the application of flexible DC transmission to overhead lines. This paper proposed a bipolar MMC structure and operating principle including full-bridge MMC fault equivalent circuit and the fast decay analysis formula of fault current. The full-bridge MMC system at DC pole-to-ground fault can avoid overvoltage and overcurrent due to fast-clearing characteristic of full-bridge MMC fault current. The bipolar HVDC based on MMC system is built on the simulation platform. The correctness and effectiveness of DC pole-to-ground fault analysis and protection scheme are verified by simulations.
引用
收藏
页码：321 / 326
页数：6
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