高压电器2017，Vol.53Issue(8)：43-48,54,7.DOI:10.13296/j.1001-1609.hva.2017.08.008
±800kV天中特高压直流送端系统安全稳定性分析
Analysis on Security and Stability of ±800 kV Tianzhong UHVDC Sending Grid
摘要
Abstract
In order to analyze the security and stability of Tianzhong UHVDC sending grid,this paper analyzes the influence of different DC operating conditions based on effective short circuit ratio (OESCR),filter switching and DC single (double)pole lock failure.Then analyzes the impact of frequency adjuster which is at Xinjiang grid on system frequency characteristic;And the influence on UHVDC stability when generator cutting or DC pole blocking faults under the DC isolated operation.The study results show that the operating conditions of the 6 or 8 generators of the DC auxiliary power station can be set up,and the frequency of DC operation is large affected by the frequency adjuster of power grid.But,the DC isolated system frequency stability and transient overvoltage problems are easy to be caused by the DC generator cutting and DC single pole lock failure when considering non control measures.Therefore,it should take stability control strategies or DC power emergency control to enhance the security and stability of the UHVDC system.关键词
特高压直流/安全稳定/送端系统/运行工况/孤网Key words
UHVDC/security and stability/sending grid/operating condition/island system引用本文复制引用
巩晓玲,樊艳芳,钟显,郑少鹏,常喜强..±800kV天中特高压直流送端系统安全稳定性分析[J].高压电器,2017,53(8):43-48,54,7.基金项目
国家自然科学基金项目(51467019).Project Supported by National Natural Science Foundation of China (NSFC)(51467019). （51467019）
