Soft computing technique based reactive power planning using NVSI

Abstract

This paper proposed an application of New Voltage Stability Index(NVSI) to Reactive Power Planning(RPP) using Soft Computing Technique based Differential Evolution(DE).NVSI is used to identify the weak buses for the Reactive Power Planning problem which involves process of experimental by voltage stability analysis based on the load variation. The Formulation of a New Voltage Stabilty Index(NVSI),which is originates from the equation of a two bus network,neglecting the resistance of transmission line,resulting in appreciable variations in both real and reactive loading.The proposed approach has been used in the IEEE 30-bus system.Results show considerable reduction in system losses and improvement of voltage stability with the use of New Fast Voltage Stability Index for the Reactive Power Planning problem.