Grid Integration of Wind Power System for Voltage Stability Enhancement

Abstract

Integration of renewable energy for sustainable power supply is gradually securing prominence in energy deficit aversion and depletion of fossil fuels. This paper examines the impact of integration of Permanent Magnet Synchronous based Wind Turbine Generators (PMS-WTGs) on power system's voltage stability. Nigerian 52-bus, 330kV grid network is used as the study case. Successful modelling and simulation of the network were achieved in MATLAB. Ant Colony Optimization technique was used to determine optimal location and sizing of PMS-WTGs on the network. At simulation, Continuation Power Flow analysis indicates Aladja and Yola load buses as the best positions to place PMS-WTGs of respective optimal sizes of 100MW and 197MW with a 150% increase in load injection at 10% interval. The wind penetration levels maintain the ±5% bus voltage limit with the highest voltage level, 1.042p.u, at Damaturu. The overall results indicate integration of 297MW PMS-WTGs yields an improvement in voltage profile.