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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
Harmonic Modeling of Residential and Commercial Loads with Unified Power Quality Conditioner
Full Text(PDF, )  PP.770-743  
R.Kameswara Rao, S.S.Tulasiram
— Distribution system, Unified power quality conditioner (UPQC), Power quality, Total harmonic distortion (THD), harmonic mitigation techniques
In this paper simulation models are developed for various nonlinear loads. The different nonlinear loads like personal computer, fluorescent lamp, uninterruptable power supply, adjustable speed drive and power converter are considered. The proposed models are employed for harmonic analysis of a practical system and to design a Unified power quality conditioner (UPQC) to mitigate harmonics in the distribution system. These loads are considered individually and they are taken as loads to the electrical distribution system and evaluated for Total Harmonic Distortion (THD). The analysis of voltage and current harmonics is performed for these loads individually. These models are used for harmonic analysis of typical domestic and commercial loads. Finally THD of the combined loads is analyzed by using all these loads put together. To minimize these harmonics in supply currents, a three Phase Unified Power Quality Conditioner is used. The dynamic model of the UPQC is developed in the MATLAB/SIMULINK environment and the simulation results demonstrating the power quality improvement in the system are represented by FFT analysis.
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