摘要
依据向家坝—上海特高压直流输电示范工程实际设备参数建立了系统仿真分析模型,研究了逆变站失去电源、中性线开路、金属回线开路3种典型开路故障引起操作过电压的机理及分布规律,并针对保护启动延时以及快速接地开关动作延时提出了过电压的抑制措施,对后续特高压直流输电工程避雷优化配置具有一定的指导意义。
A system simulation model is built with the device parameters from the Xiangjiaba-Shanghai HVDC Transmission Demonstration Project. The over-voltage generation mechanism and its distribution induced by three typical open circuit faults, i.e. the power absence of inverter substation, the open circuit of neutral line, and the open circuit of metal loop, are analyzed with the model. Moreover, aiming at the delay of protecting start-up and the operation delay of rapid grounding switch, a control method of over-voltage is presented. This study may be of help to the optimization of arresters layout for the following HVDC project.
出处
《高压电器》
CAS
CSCD
北大核心
2013年第6期113-119,共7页
High Voltage Apparatus
关键词
开路故障
直流场
过电压
仿真
open circuit fault
DC field
over-vohaze： simulation
