Harmonic and TIF Analysis in Distribution System with Integration of PV and Wind Systems

Renewable energy resources have an inherent drawback: they are intermittent. Due to this, individual renewable resources in standalone scenarios are not reliable and thus cannot be utilized for practical large-scale applications. A hybrid renewable energy system solves this issue by integrating multiple renewable, non-renewable and storage systems. Since multiple sources are used, distributed generation is possible in the case of HRES. This will not only help to satisfy the demand but also reduce losses and improve voltage profile besides reducing carbon footprint. This paper studies the effect of PV and WTG on the load flow and harmonics in a gird connected radial distribution system. Modeling of the system is discussed with four different cases for comparison. Harmonic analysis is performed to obtain the THD and TIF parameters to understand the voltage and current distortions and their effect on communication systems. It is found that the PV and Wind power generation system provides the best voltage profile. The bus voltage distortions are decreased and the branch currents are relatively distorted.