The Impact of Hydro-Turbine and its Governor System on Power System Low Frequency Oscillation

被引:0
|
作者
Zhu, Jian-Guo [1 ]
机构
[1] Three Gorges Univ, Sch Elect & New Energy, Yichang, Peoples R China
关键词
hydro-turbine governor system; soft feedback; low frequency oscillation;
D O I
10.4028/www.scientific.net/AMR.614-615.875
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper studies the effect of the soft feedback in hydro-turbine and its governor system on power system transient stability. Low frequency oscillation phenomenon in which the hydraulic turbine sets participate occurred on power system many times this year, which with no mechanism discovered. In this paper, we first study the effect of mechanical load moment output of the prime mover system on the mechanism of low frequency oscillations, then by analysis of small-signal stability on hydro-turbine and its governor system and simulation experiments on an two-generator power system using PSASP, we come to the conclusion that: If the soft feedback output values of hydro-turbine governor systems are set small in the power system, it will come to the unstable oscillation condition.
引用
收藏
页码:875 / 879
页数:5
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