Sarath Kumara

Post doc at Power grids and Components

Sarath Kumara is a Postdoc in the Power grids and Components Group, Electric Power Engineering Division. His project is related to advance electrical characterization of new insulation materials for HVDC cable insulations. This work is a collaboration between four different departments within Chalmers: Electrical Engineering, Industrial and Materials Science, Chemistry and Chemical Engineering, and Physics. In addition, several industries are interested stakeholders in the outcome of this project, namely Borealis (Stenungsund), Nexans (Halden), NKT Cables (Alingsås).

Source: chalmers.se
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Showing 20 publications

2020

Electrical Characterization of a New Crosslinked Copolymer Blend for DC Cable Insulation

Sarath Kumara, Xiangdong Xu, Thomas Hammarström et al
Energies. Vol. 13 (6), p. 1434-1449
Journal article
2020

Comparison of Different Methods for Characterization of DC Conductivity of Insulating Polymers

Sarath Kumara, Thomas Hammarström, Amir Masoud Pourrahimi et al
2020 IEEE International Conference on Dielectrics, ICD 2020, p. 435-438
Paper in proceedings
2020

Click chemistry-type crosslinking of a low-conductivity polyethylene copolymer ternary blend for power cable insulation

Massimiliano Mauri, Anna Hofmann, Diana Gomez-Heincke et al
Polymer International. Vol. 69 (4), p. 404-412
Journal article
2016

Surface Potential Decay on LDPE and LDPE/Al2O3 Nano-Composites: Measurements and Modeling

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 23 (6), p. 3466-3475
Journal article
2015

Modifications of dielectric properties of polyamides induced by long-term exposure to corona

Yuesheng Zheng, Sarath Kumara, Yuriy Serdyuk et al
Proceedings of the 11th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, Sydney, Australia, 19-22 July 2015, p. 708-711
Paper in proceedings
2013

Application of streamer criteria for calculations of flashover voltages of gaseous insulation with solid dielectric barrier

Manjunath Ramesh, Raimund Summer, Shailendra Singh et al
Proceedings of 18th International Symposium on High Voltage Engineeirng, Aug. 25-30, 2013, Seoul, Korea, p. 1258-1263
Paper in proceedings
2013

Impulse testing of hybrid gas-solid polymer insulation systems

Sarath Kumara, Yuesheng Zheng, Yuriy Serdyuk et al
Proceedings of 18th International Symposium on High Voltage Engineering, Aug. 25-30, 2013, Seoul, Korea, p. 509-514
Paper in proceedings
2013

Performance of a hybrid insulation system

Yuesheng Zheng, Sarath Kumara, Yuriy Serdyuk et al
Report
2012

Surface charge decay on HTV silicone rubber: effect of material treatment by corona discharges

Sarath Kumara, Bin Ma, Yuriy Serdyuk et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 19 (6), p. 2189-2195
Journal article
2012

DC Flashover Characteristics of a Polymeric Insulator in Presence of Surface Charges

Sarath Kumara, Shahid Alam, Imtiaz Rifanul Hoque et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 19 (3), p. 1084-1090
Journal article
2012

Surface Charges on Cylindrical Polymeric Insulators

Sarath Kumara, Imtiaz Rifanul Hoque, Shahid Alam et al
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 19 (3), p. 1076-1083
Journal article
2011

Surface Charge Decay on Polymeric Materials under Different Neutralization Modes in Air

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 18 (5), p. 1779-1788
Journal article
2011

Surface Charge Decay of Corona Charged HTV Silicone Rubber Samples due to Bulk Conduction

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
22nd Nordic Insulation Symposium (NORDIS 11), June 13-15, Tampere, Finland, p. 75-78
Paper in proceedings
2010

Simulation of Surface Charge Effect on Impulse Flashover Characteristics of Outdoor Polymeric Insulators

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 17 (6), p. 1754-1763
Journal article
2009

Measurement and Simulation of Positive Impulse Corona Current

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
21st Nordic Insulation Symposium (NORDIS 09) , June 15-17, Gothenburg, Sweden., p. 117-120
Paper in proceedings
2009

Charging of Polymeric Surfaces by Positive Impulse Corona

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
IEEE Transactions on Dielectrics and Electrical Insulation. Vol. 16 (3), p. 726-733
Journal article
2009

Calculation of Corona Voltage-Current Characteristics in Air

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
4th International Conference on Industrial and Information Systems 2009, ICIIS 2009; Peradeniya; Sri Lanka; 28 December 2009 through 31 December 2009, p. 489-492
Paper in proceedings
2009

Surface Charge Relaxation in Silicone Rubber and EPDM

Sarath Kumara, Yuriy Serdyuk, Stanislaw Gubanski
2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, p. 2B-16
Paper in proceedings

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Showing 1 research projects

2020–

Activities within materials and diagnostics for high-voltage networks

Yuriy Serdyuk Power grids and Components
Thomas Hammarström Power grids and Components
Sarath Kumara Power grids and Components
Chalmers

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