直流输电系统故障对发电机轴系扭振的影响  

IMPACT OF HVDC FAULTS ON TORSIONAL OSCILLATION OF TURBINE-GENERATOR'S SHAFTING

作　　者：杨秀[1] 陈陈[1] 

机构地区：[1]上海交通大学电气工程系,上海市徐汇区200030

出　　处：《电网技术》2004年第22期6-10,共5页Power System Technology

摘　　要：通过仿真深入分析了直流输电系统的不同故障对发电机组轴系的影响,这些故障包括换流器故障与直流线路故障,并与交流系统短路故障对轴系扭振的影响进行了对比。研究结果表明,总体而言直流输电系统故障对发电机组轴系造成的冲击小于交流系统三相短路故障对发电机组轴系的冲击,但换流器桥臂短路故障与换流桥母线短路故障对轴系的冲击较严重,应引起特别重视。By means of simulation the impact of various faults occurred in HVDC, including the converter fault and DC transmission line fault, on the shafting of turbine-generator (T-G) set is analyzed and the comparison of above mentioned impact with that of AC faults on the shafting of T-G set is conducted. The research results show that as a whole the impact of fault occurred in HVDC transmission system on shafting of T-G set is weaker than that caused by AC faults, but the impact of the short-circuit fault of converter bridge arm and the short-circuit fault of converter bridge bus on the shafting of T-G set is more severe, and special attention should be paid to it.

关 键 词：直流输电系统 换流器 轴系扭振 发电机组 短路故障 直流线路 三相短路 交流系统 仿真 总体 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM311