Commutation Failures Caused by DC Line Faults in Double-Circuit LCC-HVDC Transmission Lines

被引：0

作者：

Ma, Yanjun ^{[1
]}

Li, Haifeng ^{[2
]}

Wang, Gang ^{[1
]}

机构：

[1] South China Univ Technol, Guangzhou, Guangdong, Peoples R China

[2] South China Univ Technol, Sch Elect Power Engn, Guangzhou, Guangdong, Peoples R China

来源：

2018 INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY (POWERCON) | 2018年

关键词：

Commutation failure; double-circuit HVDC transmission lines; current increase; ELIMINATION;

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：

The mechanism of commutation failure (CF) caused by dc line faults in double-circuit LCC-HVDC transmission lines is investigated in this paper. Fault analysis for double-circuit HVDC transmission lines is given to present the current increase at inverter side. The commutation process is also demonstrated to further investigate the CF problems. Then, the transient performance of conventional control system at inverter side is discussed in case of current fluctuation. It indicates that conventional control system is incapable of resisting CF by steep current increase. Therefore, an improved control scheme is developed based on the current prediction to mitigate CF by transient current increase. Simulation results show the proposed control method has the ability to reduce the CF risk effectively in most cases.

引用

下载

页码：2725 / 2732

页数：8

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