摘要
介绍了世界首例五端柔性直流输电工程——浙江舟山柔性直流输电工程的概况和主要设备组成,分析总结了舟山柔性直流输电工程控制保护系统的总体结构和主要功能,重点研究了舟山MMC-MTDC控制保护系统中的交流故障穿越控制策略,最后通过实验分析了舟山MMC-MTDC系统在交流侧单相接地故障、两相接地故障、两相短路故障、三相短路故障四种情况下的瞬时故障穿越能力。本文研究结果可为舟山五端柔性直流输电系统安全稳定运行提供技术支持和理论保障。
The paper introduces the general situation of the world＇ s first five side modular multilevel converter multiterminal direct current（ MMC- MTDC） transmission project—Zhoushan MMC- MTDC transmission project and its main equipment composition. The overall structure and major function of its control and protection system are analyzed and summarized. Based on the research of AC fault ride-through strategy of MMC- MTDC control system,several experiments were conducted to analyze the fault ride-through capability of MMC- MTDC system under four kinds of faults,including AC single phase-to-grounding,AC two-phase-to- grounding,AC two-phase short-circuit and AC three-phase short-circuit. The research results provide technical support and theoretical guarantee for Zhoushan MMC- MTDC system.
出处
《电气开关》
2016年第3期22-26,共5页
Electric Switchgear
关键词
多端直流输电
模块化多电平换流器
控制保护系统
故障穿越
multi-terminal direct current（MTDC）
modular multilevel converter（MMC）
control and protection system
fault ride-through
