摘要
昌吉—古泉±1100 kV特高压直流(以下简称"吉泉直流")分层接入受端华东电网后,将给华东交流电网的运行带来新的安全稳定问题。为此,该文针对吉泉直流分层及单层接入两种不同方式,对直流近区潮流、分层接入直流短路比及电压波动特性进行了比较;分析了不同故障下吉泉直流分层接入后受端电网的稳定特性,并提出了相应的安全稳定控制策略,保障了华东电网的安全稳定运行。
After hierarchical connection of ChangjiGuquan±1100 kV UHVDC,new security and stability problems have arisen in receiving-end East China Power Grid.In this regard,this study made comparison of DC nearby area power flow,hierarchical connection DC short circuit ratio,and voltage fluctuation between single-layer connection and hierarchical connection of UHVDC.Stability characteristics of the receiving-end power grid after hierarchical connection of UHVDC were analyzed and corresponding control strategies were proposed to ensure secure and stable operation of East China Power Grid.
作者
徐式蕴
贺静波
樊明鉴
林伟芳
张健
王超
易俊
顾卓远
郭贤珊
付颖
XU Shiyun;HE Jingbo;FAN Mingjian;LIN Weifang;ZHANG Jian;WANG Chao;YI Jun;GU Zhuoyuan;GUO Xianshan;FU Ying(China Electrical Power Research Institute,Haidian District,Beijing 100192,China;State Grid Corporation of China,Xicheng District,Beijing 100031,China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第5期1683-1689,共7页
Power System Technology
基金
青年人才托举工程项目(20160157
JLB-2017-305)
国家自然科学基金项目(U1766202
51777195)~~
关键词
±1100
kV特高压直流
分层接入直流短路比
稳定特性
交直流协调
安全稳定控制
Changji-Guquan±1100 kV UHVDC
hierarchical connection DC short circuit ratio
stability characteristics
AC/DC coordination
security and stability control
