Dr. J.R.S. Kumara

Department of Electrical & Electronic Engineering
University of Peradeniya, Sri Lanka.
sarath AT ee.pdn.ac.lk
+94-81-2393414

Research Publications


Journals

Sarath Kumara, Bin Ma, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Surface charge decay on low-conductive polymer: effect of material treatment by corona discharges”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 19, No. 6, pp. 2189-2195, December 2012.

Sarath Kumara, Shahid Alam, Imtiaz R. Hoque, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “DC flashover characteristics of a cylindrical insulator model in presence of surface charges”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 19, No. 3, pp. 1084-1090, June 2012.

Sarath Kumara, Imtiaz R. Hoque, Shahid Alam, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Surface charges on cylindrical polymeric insulators”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 19, No. 3, pp. 1076-1083, June 2012.

S. K. Abeygunawardane, J. R. S. Sisira Kumara, J. B. Ekanayake, A. Arulampalam, “A magnetic-core based fault current limiter for utility applications”,Journal of National Science Foundation Sri Lanka, Vol. 39 No. 3, pp.227-234, 2011.

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Surface charge decay on polymeric materials under different neutralization modes in air”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 18, No. 5, pp. 1779-1788, October 2011

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Simulation of surface charge effect on impulse flashover characteristics of outdoor polymeric insulators”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 17, No. 6, pp. 1754-1763, December 2010.

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Charging of polymeric surfaces by positive impulse corona”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 16, No. 3, pp. 726-733, June 2009.

International Conferences

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, ”Surface charge decay of corona charged HTV silicone rubber samples due to bulk conduction”, Proceeding of the 22nd Nordic Insulation Symposium (Nord-IS 11), pp. 75-78, Tampere, Finland, June 2011.

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Calculation of corona voltage-current characteristics in air”, Proceeding of the 4th International Conference on Industrial and Information Systems (ICIIS 09), pp 489-492, Pedadeniya, Sri Lanka, December 2009.

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Surface charge relaxation in silicone rubber and EPDM”, 2009 Annual Report IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), paper 2B-16, Virginia Beach, USA, October 2009.

Sarath Kumara, Yuriy V. Serdyuk and Stanislaw M. Gubanski, “Measurement and simulation of positive impulse corona current”, Proceeding of the 21st Nordic Insulation Symposium (Nord-IS 09), pp. 117-120, Gothenburg, Sweden, June 2009.

J.R.S.S. Kumara, A. Atputharajah and J.B. Ekanayake, “Over Current Protection Coordination of Distribution Networks with Fault Current Limiters”, IEEE PES General meeting 2006, Montreal, 2006.

J.R.S.S. Kumara , A.M.T.K.Bandara, A. Atputharajah and J.B. Ekanayake, “Design and testing of a TCSC for Distribution network Applications”, First International Conference on Industrial and Information Systems , Sri Lanka, pp.151-155, Aug 2006.

J.R.S.S. Kumara, A. Atputharajah and J.B. Ekanayake, “Over Current Protection Coordination of Distribution Networks with Fault Current Limiters”, International Seminar and Tutorial on Power Transmission Research Interests and Challenges, India, pp. 37, December 2005.

P.J. Binduhewa, J.R.S.S. Kumara, A. Atputharajah and J.B. Ekanayake, “Feasibility study of an application of a saturated magnetic core as a fault current limiter”, International Seminar and Tutorial on Power Transmission Research Interests and Challenges, India, pp. 69,December 2005.

Local Conferences

J.R.S.S. Kumara and D.T.T.M.T.Jayatissa, “Power Quality Improvement”, IEE younger members sessions 2003, Moratuwa, Sri Lanka, pp. 19, Sep 2003.

C.J.Gajanayake, J.R.S.S.Kumara, M.K.M.Sana, A.Atputharajah and M.A.R.M. Fernando “Under Voltage Problem in Sri Lanka – A case study”, Peradeniya University Research Sessions, Sri Lanka, Vol. 9, pp. 75,Nov 2004.

J.R.S.S. Kumara and D.T.T.M.T.Jayatissa, “Power Quality Improvement and Energy Saving for Industry”, Annual Publication 2004- Power, HV and Energy systems Group of University of Peradeniya ,Sri Lanka, pp. 44-45.

J.R.S.S. Kumara, A. Atputharajah and J.B. Ekanayake, “Over Current Protection Coordination of Distribution Networks with Distributed Generation”, Annual Publication 2005- Power, HV and Energy systems Group of University of Peradeniya ,Sri Lanka, pp. 15-16.

Thesis

Sarath Kumara, “Electrical charges on insulator surface and their impact on flashover performance”, Doctoral thesis, Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden, 2012.

Sarath Kumara, “Electrical charges on insulator surface and their impact on withstand performance”, Licentiate thesis, Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden, 2009.

J.R.S.S. Kumara, “Application study of a fault current limiter in terms of protection and interrupting duty of switchgear”, M. Phil. Thesis, Oct. 2007.