Power Quality Assessment in Electrical Power Distribution System Integrated with Distributed Energy Resources

In the present scenario, the energy demand on the electric power system is being increased and large number of non-linear loads are connected to grid. In order to reduce the effects of conventional generation system and to meet the growing energy demand, Distributed Energy Resources (DERs) are introduced in the distribution system. Due to the presence of non-linear loads and power electronic converters in the system, leads to the distortion of quality of the power. Here, the power quality parameter considered for study is the harmonics introduced by the non-linear loads in the system. This paper aims to minimize the Total Harmonic Distortion when a DER is connected. The Synchronous Reference Frame (SRF) technique is being studied that generates the pulses that are given to the switches of Voltage Source Inverter (VSI). Various test cases are considered for study considering balanced load condition. The work is carried out using MATLAB/Simulink. Using FFT analysis THD is determined.