摘要
以两电平单换流器双极对称柔性直流输电系统为对象,从交流系统故障、直流系统故障及换流器故障3个方面分析其无保护故障特征,总结现有柔性直流输电系统保护策略研究成果,并结合传统直流输电工程及上海南汇示范工程,介绍目前柔性直流输电工程的保护配置情况及其不足之处,最后根据研究现状预测未来柔性直流输电故障及保护策略的研究方向及热点。
This paper mainly introduces the current research situation of protection strategy for two-level single inverter bipolar symmetrical flexible HVDC system. Firstly it analyzes the feature of the VSC-HVDC under AC, DC and inverter faults without protection. Then this paper reviews the current protection strategy of the VSC-HVDC system and points out its defects on the basis of the protection configuration of Shanghai Nanhui flexible HVDC transmission demonstration project and the classic HVDC. Finally the future development trends and research hot spot of the protection strategy of VSC-HVDC system is proposed.
出处
《陕西电力》
2015年第4期5-10,共6页
Shanxi Electric Power
基金
国家自然科学基金(51207115)
