Modelling of Harmonic Stability and Voltage Distortion between Electrical Grid and Distributed Generation Technologies

As the electric energy demand grows, there is a significant increase in the penetration of renewable generation (RG) in the existing electrical grid. With different types of renewable generation available at present, it is believed that some designs contribute significantly to electrical network's Power Quality (PQ). Therefore, the associated impact due to integration of renewable technologies into existing electrical networks contributes negatively to power quality of the grid. The aim of this paper is to conduct a study on the impacts of renewable generation on the power quality of electrical the grid. The aim is to assesses the potential effects of renewable generation technologies on the operation of electric power system by designing harmonic current model, analyisis of result and mitigation technique for as corrective action for power quality issues. Analytical method for modeling of harmonic interactions between the grids and renewable generation technologies are investigated using DigSILENT Power Factory software and the results obtained were discussed.