Optimal location of MMC-UPFC for Voltage Stability Enhancement in Power Distribution system using Hybrid optimization

Abstract

This paper presentes a novel method for enhancing the voltage stability of the power distribution system using MMC-UPFC model. In the proposed approach, the hybrid optimization is used to determine the optimal location of the MMC-UPFC device. The hybrid optimization is a combination of Grey Wolf Optimization (GWO) and BAT algorithm. In the GWO algorithm, the updating process of Wolf is achieved with the help of BAT algorithm. Initially, the Optimal Power Flow (OPF) is analyzed using Newton-Raphson Method (N-R). here power loss, voltage stability index and voltage profiles are computed with the help of the N-R method. After that, the real power loss reduction and voltage stability enhancement is attained by optimal location of MMC-UPFC. Here, MMC-UPFC is designed to improve the voltage stability of the power distribution system. From the power flow analysis, power loss, real power, active power, bus voltage of the power system is determined. After placing of MMC-UPFC, the parameters of power system can be computer for analysis the performance of the proposed system. The constraints of the power system must be satisfied for enhancing voltage stability of the system. The proposed method is implemented in the MATLAB platform and which is tested with the IEEE 30 and IEEE 14 bus system respectively, the proposed method is compared with the existing methods of Firefly Algorithm (FA) and Gravitational Search Algorithm (GSA) respectively.