300MVar级同步调相机对湖南电网稳定的影响研究.pdfVIP

湖 南 电 力 第 36卷第3 期 HUNAN ELECTRIC POWER 2016年 6 月 doi:10. 3969/j. issn. 1008-0198. 2016. 03. 001 300 MVar级同步调相机对湖南电网 稳定的影响研究 崔挺 ，沈阳武 ，张斌 ，张可人 ，左剑 ，呙虎 (国网湖南省电力公司电力科学研究院，湖南长沙410007) 摘 要 ：研究在湖南电网配置300 MVar级的同步调相机后，对湖南受端电网稳定水平 的影响。首先介绍大容量调相机的基本结构和技术特性。然后分析湖南电网存在的暂态 电压稳定问题。从电网暂态电压稳定和最小开机方式的角度，综合评估同步调相机对电 网稳定水平的影响。最后通过仿真进行对比分析，结果表明同步调相机具有较好的动态 电压支撑能力和较强的短时过载能力，能有效改善湖南电网的稳定水平。 关键词 ：同步调相机；特高压直流输电；电压稳定；动态无功补偿；湖南电网 中图分类号 ：TM712 文献标志码： B 文章编号 ：1008-0198(2016)03-0001-04 Influences of 300 MVar synchronous condensers on the stabilities of Hunan power grid CUITing, SHENYangwu, ZHANG Bin, ZHANG Keren, ZUO Jian, GUO Hu (State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China) Abstract : This paper focuses on the influences of 300 MVar synchronous condensers on the stabilities of Hunan power grid. Firstly, the basic structure and characteristics of synchronous condensers are introduced. And then, the transient voltage instability problem is analyzed without the synchronous condensers. Considering both the system transient voltage stability and the requirements of minimal operation generators, the effects of synchronous condensers on the system stabilities are estimated comprehensively. The simulation results on Hunan power grid verify that the synchronous condensers have better dynamic voltage supports and overload capability, and hence can improve the system stabilities effectiv