南方电网多直流落点系统稳定性分析  

Transient Stability Analysis of South China Power System with Multiple HVDC Links

作　　者：徐政[1] 杨靖萍[1] 高慧敏[1] 

机构地区：[1]浙江大学电机系,杭州310027

出　　处：《高电压技术》2004年第11期21-23,26,共4页High Voltage Engineering

基　　金：国家自然科学基金资助项目 (5 0 2 770 34)

摘　　要：采用NETOMAC数字仿真方法 ,分别研究了南方电网多直流落点系统在各种故障 (包括N - 1故障、各直流线路单、双极闭锁故障及多条直流线路同时双极闭锁故障 )时的暂态稳定性 ,还研究了切机和切负荷措施对保持南方电网暂态稳定性的作用 ,结果表明 ,广东电网内单回 5 0 0kV线路三相短路不会使系统失去稳定 ;3回直流各自单极闭锁、天广、三广直流分别双极闭锁时 ,南方电网分别保持稳定 ,频率降低≯ 1Hz ;贵广直流双极闭锁时 ,贵州电网需切机才能保持南方电网稳定。In this paper, the transient stability of South China power system with three HVDC links is analyzed. The fault modes include N-1 contingencies, single pole block of each HVDC link, double pole block of each HVDC link, and simultaneous double pole block of multiple HVDC links. The generator tripping and load shedding schemes are also studied. The results show that the system is stable if any single circuit of Guangdong 500 kV grid is three phase short circuited and then tripped. For double pole block fault in Tian-Guang or San-Guang HVDC link, the system is stable, but Gui-Guang HVDC link double pole block requires multiple generator tripping in the power sending end of Guizhou to keep the system stable.

关 键 词：南方电网 直流输电 暂态稳定性 电压稳定性 切机 切负荷 

分 类 号：TM712[电气工程—电力系统及自动化]