Assessment of Voltage Stability Using Network Equivalent
Abstract: In this paper a fast
system voltage stability index (FSVSI) has been proposed to assess overall
system voltage stability of a multi-bus power system at a particular operating
point using the concept of two bus network equivalent. A universal direct voltage stability index
has also been explored to assess local (DVSI) as well as overall system voltage
stability (DSVSI). An index called system transmission quality factor (STQF)
has been developed to assess the power transmission quality of the overall system
in the context of voltage stability. Two FACTS controllers, TCSC and STATCOM
have also been incorporated in the present study to observe their effectiveness
to ensure voltage stabilty. STATCOM has been found to be superior in order to
improve voltage stability of power system as compared to TCSC. The developed
concept has been validated using practical India Easten Grid (WBSEB system) and
it has a high potential of on-line application.
Author: Priyanath Das, Sunita
Halder nee Dey, Abhijit Chakrabarti, Tanaya Datta
Journal Code: jptkomputergg110069
