TY - JFULL AU - Santi Behera and M. Tripathy and J. K. Satapathy PY - 2014/11/ TI - Optimal Placement and Sizing of SVC for Load Margin Improvement Using BF Algorithm T2 - International Journal of Electrical and Computer Engineering SP - 1659 EP - 1665 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/10000935 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 94, 2014 N2 - Power systems are operating under stressed condition due to continuous increase in demand of load. This can lead to voltage instability problem when face additional load increase or contingency. In order to avoid voltage instability suitable size of reactive power compensation at optimal location in the system is required which improves the load margin. This work aims at obtaining optimal size as well as location of compensation in the 39- bus New England system with the help of Bacteria Foraging and Genetic algorithms. To reduce the computational time the work identifies weak candidate buses in the system, and then picks only two of them to take part in the optimization. The objective function is based on a recently proposed voltage stability index which takes into account the weighted average sensitivity index is a simpler and faster approach than the conventional CPF algorithm. BFOA has been found to give better results compared to GA. ER -