摘要
采用NETOMAC数字仿真法,分析研究了三峡-华东多回直流输电线路在直流线路故障(单、双极闭锁)时,直流调制措施(直流功率提升和切机措施)对保持三峡电网暂态稳定性的作用。研究结果表明,三常和葛上两回直流其中一回单极闭锁或葛上直流双极闭锁时,三峡电网能保持稳定;三常直流双级闭锁时三峡电网失稳,直流功率提升配合切机措施对恢复电网稳定效果较好。
In this paper, the transient stability of Three Gorges Power Grid with HVDC links is analyzed by NETOMAC. The fault modes include single pole block of each HVDC links; double pole block of each HVDC links. The generator tripping and load shedding schemes are also studied. The results show that for single pole block in San-Chang or Ge-Shang HVDC link, the system is stable. The results also show that the HVDC modulating in Three Gorges Power Grid is effective. For double pole block in Ge-Shang HVDC link, the system is stable. But by using DC power support, San-Chang HVDC link double pole block requires multiple generators tripping in Three Gorges Power Grid to keep the system stable.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2006年第3期87-89,共3页
High Voltage Engineering
关键词
直流输电
暂态稳定性
直流调制
三峡电网
HVDC
transient stability
HVDC modulating
Thres Gorges Power Grid
