A Novel Pilot Protection Scheme for MMC-HVDC Transmission Lines

被引：0
|
作者：
Ning, Lianying [1 ]
Zheng, Xiaodong [1 ]
Tai, Nengling [1 ]
Huang, Wentao [1 ]
Chen, Jinyi [2 ]
Wu, Zhongyu [3 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai, Peoples R China
[2] Shanghai Pudong Elect Power Corp, Shanghai, Peoples R China
[3] MISO, Carmel, IN USA
来源：
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2017年
基金：
中国国家自然科学基金;
关键词：
MMC-HVDC; transmission lines; pilot protection; DC power difference;
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：
Overcurrent or overvoltage problems caused by DC line faults endanger the security of modular multilevel converter based high voltage direct current (MMC-HVDC) system. To improve the reliability of fault identification for MMC-HVDC transmission lines, a novel pilot protection scheme based on DC power difference is proposed in this paper. Characteristics of the DC power difference between positive pole DC power at one terminal and negative pole DC power at the other terminal are theoretically analyzed for various faults. The analysis reveals that fault detection and fault line selection can be achieved by calculating the DC power differences. According to that, the proposed protection scheme is constructed. Simulation results in real-time digital simulator (RTDS) demonstrate that the proposed protection scheme can identify and classify MMC-HVDC transmission line faults under different fault conditions accurately.
引用
收藏
页码：105 / 110
页数：6
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