Mathematical modeling and simulation of UPQC in distributed power systems

In this paper, the mathematical Analysis of UPQC which is combination of Shunt-APF and Series-APF in distribution power systems discussed. It is more extensive by adding a series VSC from feeder to feeder. UPQC is added in each line coming from various substations to mitigate different power quality problems to maintain good voltage profile at supply side and the load end current disturbances in distribution power systems. The d-q method and p-q concept are used for controlling of UPQC. Mathematical analysis of UPQC in detail is discussed. In this paper, the UPQC based mathematical approach to mitigate all power quality issues has been developed by using MATLAB/Simulink.