Experiment-based simulation for distortion behavior in LV networks for microgrid modeling

This paper presents the results of experiment-based simulation aimed at analyzing the harmonic distortion behavior of nonlinear loads and the background voltage distortion of power supply in building low-voltage (LV) distribution network. The procedure of constructing experiment-based simulation model and harmonic monitoring at various points of common coupling (PCCs) in LV network are introduced for analyzing voltage and current harmonic distortion behavior due to attenuation effect. The model is proposed for future microgrid modeling analysis at different PCCs in LV networks. The simulation model was constructed from captured harmonic data and the corresponding LV network topology. The simulation model has been verified by comparing with field measurement results. The VTHD and ITHD relationship curve and the attenuation effect curve for personal computers (PC) have been proposed by using the simulation model. In particular case study has been conducted to compare the conventional and state-of-art switch mode power supply (SMPS) used in PCs.

[1]  C. Venkatesh,et al.  Modelling of Nonlinear Loads and Estimation of Harmonics in Industrial Distribution System , 2008 .

[2]  Arindam Ghosh,et al.  Droop Control of Converter-Interfaced Microsources in Rural Distributed Generation , 2010, IEEE Transactions on Power Delivery.

[3]  Hoang Le-Huy,et al.  Modeling and simulation of the propagation of harmonics in electric power networks. I: Concepts, models, and simulation techniques. Discussion , 1996 .

[4]  A. Engler,et al.  Droop control in LV-grids , 2005, 2005 International Conference on Future Power Systems.

[5]  Yaping Du,et al.  Evaluation of harmonic limits in large office buildings , 1997 .

[6]  W. Xu,et al.  Analyzing systems with distributed harmonic sources including the attenuation and diversity effects , 2005, IEEE Transactions on Power Delivery.

[7]  J. Milanović,et al.  Development of Stochastic Aggregate Harmonic Load Model Based on Field Measurements , 2007, IEEE Transactions on Power Delivery.

[8]  L. L. Lai,et al.  Analysis of zero sequence passive filter harmonics mitigation device for building wiring system , 2002 .

[9]  M. M. Swamy,et al.  Investigations on harmonic interaction between 1500-kVA supply transformer and VFD load at an industrial plant , 1997, 1997 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record.

[10]  John Burnett,et al.  Experimental investigation into harmonic impedance of low-voltage cables , 2000 .

[11]  M Savaghebi,et al.  A new control strategy for distributed generation interface converters to compensate microgrid harmonics , 2010, SPEEDAM 2010.

[12]  Arindam Ghosh,et al.  Load sharing and power quality enhanced operation of a distributed microgrid , 2009 .

[13]  P. Verde,et al.  Estimating the net harmonic currents produced by selected distributed single-phase loads: computers, televisions, and incandescent light dimmers , 2002, 2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309).

[14]  W. M. Grady,et al.  Predicting the net harmonic currents produced by large numbers of distributed single-phase computer loads , 1995 .

[15]  Charles Sao,et al.  Control and Power Management of Converter Fed Microgrids , 2008 .

[16]  A. Prudenzi.  A novel procedure based on lab tests for predicting single-phase power electronics-based loads harmonic impact on distribution networks , 2004, IEEE Transactions on Power Delivery.