Multi Sensitivity Factors and FPA for Loss Reduction and Voltage Profile Improvement by Optimal Placement and Sizing of Capacitor in Mesh Network

Abstract

In the present scenario, the demand for electricity has increased drastically. To meet the increased demand transmission line operates near their operating limit. Power system is unable to meet the increased load demand, and this causes deficiency of both active and reactive power. Reactive power compensation is used to improve the voltage profile of the system; it is one of the most effective ways of enhancing the working situation of transmission. The main apprehension in the effective reactive power compensation is location and size of VAR supporting devices in the transmission network. In the present work to achieve effective management of reactive power three sensitivity factors i.e. Voltage Sensitivity Factor (VSF), Voltage Stability Index (VSI), and Loss Sensitivity Factor (LSF)have been used for finding the suitable candidate bus for reactive power support and thereafter Flower Pollination Algorithm (FPA)have been used for finding the optimal quantity of the reactive power support. The obtained results are compared with the general case when only one of the sensitivity factors is used. The complete technique is tested on the IEEE-24 bus system.