Abstract

Neutral current and neutral voltage in three-phase four-wire distribution system is a big concern in power system. Various non-linear loads specially the switch mode power supply types loads inject harmonic current in neutral. The variations of neutral current and neutral voltage are analysed. Measurements taken from Electrical Machine lab of National Institute of Technology, Agartala are presented to determine the extent of neutral current and neutral voltage problem. The results show the effect of harmonic distortion in neutral conductor.

References

• Rajesh M Holmukhe and Mrs. J. V. Satre,"Harmonic Measurement And Analysis, A Case study of Electrical and Machine Lab", Bharati Vidyapeeth University college of Engineering, Pune, India, 2007.
• V. Suresh Kumar, P. S, Kannan, T. D. Sudhakar& B. Anand Kumar, "Harmonics & interharmonics in the Distribution System of an Educational Institution-A Case Study", IEEE, 2004.
• N. Karthikeyan, Sasitharan S. , Srinivas Bhaskar K. , Mahesh K. Mishra and Kalyan Kumar B, "Power Quality Survey in a Technological Institute", 3rd International Conference on Power Systems, Karagpur, 2009.
• Gerhard P Hancke and Wlodzimierz Koczara, "Pollution Effects caused by office and laboratory equipment in university buildings", IEEE, 1998.
• B. E. Kushare, A. A. Ghatol and Mrs. T. N. Date, "Power Quality survey of 33KV Indian Industrial Supply System: Results and Remedial Actions", 2007.
• A thesis presented by Abraham Olatoke, "Investigation of power quality problem in modern buildings", 2011(Brunel university).
• Karl Johnson and Robert Zavadil, "Assessing the Impacts of Nonlinear Loads on Power Quality In commercial Buildings-An Overview", IEEE, 1991.
• Leon M. Tolbert, Harold D. Hollis and Peyton S. Hale, Jr. , "Survey of Harmonic Measurement in Electrical Distribution System", IEEE IAS Annual Meeting, Oct6-10, 1996.
• Antonio Fabio M. M. de Lima, "Discussion of Harmonic Analysis of Industrial Power Systems", IEEE, 1996.
• Robert E. Fuhr, "Save Energy and Improve Power Quality, A case study-75 kVA Transformer", P. E. , 2001.
• Emmanuel. E. m, Root C. E, "The Effects of Modern Compact Fluorescent Lights on Voltage Distortion", IEEE, 1992.
• Mohsen Ghafuri, Ali Razi Kazemi, Payman Dehghanian and Mehdi Vakilian, "Investigation of the Effects of Compact Fluorescent Lamps in Power Distribution Systems", IEEE, 2011.
• Christopher May and E. Randolph Collins, "An Investigation of the Response of Incandescent Lamps and Compact Fluorescent Lamps to Voltage Fluctuations", IEEE, 2010.
• H. O. Aintablian and H. W. Hill, Jr. , "Harmonics Currents Generated by Personal Computers and their effects on the Distribution System Neutral Current", IEEE, 1993.
• B. Justus Rabi, V. Vivek and R. Arumugam, "Harmonics, A Recent Entrant To Power Quality Problem In Uninterruptible Power Supply", IEEE, 2002.
• Don O. Koval, "Power Quality Characteristics of Computer Loads", IEEE, 1997.
• S. N. Govindarajan, m. D. Cox, F. C. Berry, "Survey of harmonic levels on the southwestern Electric power company system", IEEE, 1991.
• Wang Kui, Guan Shuhua, Hou Qian, Hou Yuan Hong, Wu Qinfang, "Investigation of Harmonic Distortion and Losses in Distribution Systems with Non-linear Loads", CICED, 2008.
• D C Bhonsle and N K Zaver, "Harmonic Survey of Typical Non-linear Loads", The International Conference on Electrical Engineering, 2008.
• T. Gruzs, "A Survey of Neutral Current in 3 phase computer Power System", IEEE Trans. Ind. Appl. ,Vol. 26 ,No. 4,pp 719-725,July/Aug 1990.
• AH-CHOY LIEW, "Excessive Neutral Currents in 3 phases Fluorescent Lightings Circuits", IEEE Trans. On Industrial Appl. , Vol . 25, no. 4, pp 776-782, July/Aug. 1989.
• D. Maheswaran, A. Kalyanasundaarm and S. Kameshwaran, "Power Quality Issues in a Distribution Network Impact of Neutral Current due to Nonlinear Loads", Proceeding for India International Conferences on Power Electronics, 2006.
• Rosli Omar,Azhar Ahmad and Marizan Sulaiman," Triplen Harmonics Mitigation 3 Phase Four-wire Electrical Distribution System Using Wye-Zigzag Transformers", Journal of Emerging Trends in Engineering and Applied Sciences, Vol. 1,p-72-78,2010.
• Gianfranco Chiccoa, Petru Postolaheb and Cornel Toaden, "Triplen Harmonics: Myths and reality" Electric Power Systems Research, Science Direct, Vol. 81, page 1541-1549, 2011.
• H. O. Aintablian & H. W. Hill, "Harmonic Currents Generated by personal Computers & their effects on the Distribution System Neutral Current", IEEE, 1993.
• J. Leramati Zadeh and E. Farjah, "New Control Technique for Compensation of Neutral Current Harmonics in Three- Phase Four-Wire Systems", Bucharest Power Tech Conference, IEEE, 2009.
• Alexander E. Emanuel and John A. Orr, "The Effect of Neutral Path Impedance on Voltage and Current Distortion Part-II Imbalanced Three-Phase Systems", 11th International Conference on Harmonics and Quality of Power, 2004.
• R. Christiansen, "Effects of High Levels of harmonics from Lighting Equipment and Systems", IEEE, 1991.
• Jan J. M. Desmet, Isabel Sweetvaegher, Greet Vanalme Kurt Stockman and Ronnie J. M. Belmans, "Analysis of the Neutral Conductor Current in a Three-Phase Supplied Network with Nonlinear Single –Phase Loads", IEEE, 2003.
• Chindris M. ,"Symmetrical Systems for Single-Phase High-Power Receivers. " Socrates Course. April 2001, University of Zaragoza, Spain.
• Zheng, T. et all. ," Evaluating Power System Unbalance in the Presence of Harmonic Distortion "IEEE Trans. On Power Delivery. vol. 18, No. 2, pp. 393-397, April 2003.
• Jessica Laverne Williams," Effect of Unbalance on Power System Components in the presence of Harmonics", MS Thesis, Clemson University, Clemson, August 1996.