Modelling and Digital Simulation of a Standard IEEE-30 Bus System to Improve Power Quality of Grid with UPQC using MATLAB Ravirajan S.*, Dr. Muthamizhan T.** *M. Tech Scholar, Department of Electrical and Electronics Engineering, Bharath Institute of Science and Technology, Bharath University, Chennai, India **Professor and Head, Department of Electrical and Electronics Engineering, Bharath Institute of Science and Technology, Bharath University, Chennai, India Online published on 14 October, 2016. Abstract The paper presents the design, modelling and simulation of UPQC to improve the power quality in Thirty Bus system. Growing demand in industries emphasize power quality due to substantial presence of Power electronics as well as non-linear loads. Electrical power quality is affected by so many factors especially like presence of harmonics both voltage and current, sag and swell due to the switching loads etc. In order to maintain controlled power quality regulations, compensation at power levels is becoming an important practice. As power transfer grows, the power system becomes increasingly more complex to operate and the system becomes less secure. It may leads to large power flows with inadequate control. Thus the full potential of transmission interconnections cannot be utilized. FACTS technology is essential to alleviate these difficulties. At the distribution level, UPQC is on such solution to compensate major power quality issues and problems. The UPQC system is displayed using the elements of Simulink and it is simulated using MATLAB software. The simulation results are presented in time domain. Real and reactive power flows are compared with and without UPFC for system performance. Top Keywords Unified Power Quality Conditioner (UPQC), Voltage Source Inverters (VSI), FACTS, Power Converters, Rectifiers. Top |