Abstract
This paper presents a detailed analysis of low-frequency inter-area oscillations of the South China Interconnected Power System (SCIPS) for the year of 2005 based on the eigenanalysis method. Participation factors and mode shape diagrams of the generators participating the inter-area oscillations are figured out, and locations of PSS are determined accordingly, the parameter setting for the PSS is studied as well. The method of HVDC small signal modulation is applied to enhance the small signal stability of the system; the results are investigated based on the Prony method. The influences of component maintenances in the transmission corridors on the inter-area oscillations are further investigated, and some important conclusions are drawn.
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