Comparative Analysis of Various Locations of Compensation Devices Using CCT Assessment

Authors:

Deepshikha Singla (Manav Rachna International University, Faridabad)

P.R. Sharma (YMCA University of Science & Technology Faridabad)

Keywords: Power system, Transient Stability, Critical Clearing Time, STATCOM, Series Compensation.

Abstract:

In this paper, an attempt has been made to determine the proper location of STATCOM and series compensation working simultaneously for improving the transient stability in a multi machine power system. The transient stability condition is assessed by evaluating critical clearing time The effect of variation of generator loading, reference source voltage of STATCOM and degree of compensation on transient stability condition has been studied for various locations of STATCOM and series capacitor The Power system is modelled and simulated using MATLAB software package. The critical clearing time is obtained by increasing the fault time interval until the system loses its stability. The results indicate the importance of installing STATCOM to a power system due to their effect of not only on stabilizing the system voltages but also increasing the power system critical clearing time(CCT) in case of non-repeated three phase ground fault Increasing the CCT can help in the reliability of the protection system and reduce the protection system rating and its cost.