The Effect of Hydro Turbines and Governors on Power System Low Frequency Oscillations

Author

Li, Xianshan ; Zhang, Chunli ; Zhu, Jianguo ; Hu, Xiangyong

Author_Institution

Coll. of Electr. Eng. & Inf. Sci., China Three Gorges Univ., Yichang

fYear

2006

Firstpage

1

Lastpage

4

Abstract

In the conventional models for the analysis of power system low-frequency oscillation, excitation systems are considered as the main components that cause the low-frequency oscillation, the effect of hydro-turbine and governor systems are usually ignored. In this paper, the low-frequency oscillation model is proposed considering hydro turbines and speed governors. The results obtained by using eigenvalue relativity and sensitivity analysis method show that the hydro-turbine and governor systems do have influence on the power system low-frequency oscillation mode, and discussions are done about the characteristics of low frequency oscillation modes considering the hydro-turbine and governor models.

Keywords

eigenvalues and eigenfunctions; hydraulic turbines; oscillations; sensitivity analysis; eigenvalue relativity; excitation systems; hydroturbines; power system low frequency oscillations; sensitivity analysis method; Blades; Frequency; Hydraulic turbines; Hydroelectric power generation; Power generation; Power system analysis computing; Power system modeling; Power systems; Synchronous machines; Torque; eigenvalue; excitation system; hydro-turbine; low frequency oscillation; oscillation mode; relativity; sensitivity; speed governor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 2006. PowerCon 2006. International Conference on

Conference_Location

Chongqing

Print_ISBN

1-4244-0110-0

Electronic_ISBN

1-4244-0111-9

Type

conf

DOI

10.1109/ICPST.2006.321918

Filename

4116239