Research & Publications

Research Interests

  • Power system transient analysis & modelling (PSCAD/EMTDC, Fourier)
  • Energy efficient lighting

Technical Publications

  1. "Profile of the Sri Lankan Electrical Engineering Industry", Engineer, Vol.: XLVII, No. 02, April 2014, p9–21 (Co-authors: Buddika Jayasekera, Satish Namasivayam and LankaUdawatta)
  2. "Modelling of Mini Hydro Plants in Long Term Planning Studies – A Sri Lankan Case Study", Engineer, Vol.: XXXXVI, No. 01, January 2013, p1–10 (Co-authors: N A Mudannayake, and Tilak Siyambalapitiya)
  3. "Macro Scale Modelling of Wind Plants in Long Term Planning Studies – A Sri Lankan Case Study",  Engineer Vol.: XXXXVI, No. 01, January 2013, p11–20 (Co-authors: N A Mudannayake, and Tilak Siyambalapitiya)
  4.   "Use of Load Shedding Scheme to Increase the Capacity Limit on the Single Largest Generator", Engineer Vol.: XXXXVI, No. 01, January 2013, p31–36 (Co-authors: C K S Hapuarachchi, M D M C Gunawardena, D P Haputhanthri, I G C Harshana, J R Lucas and W D A S Wijayapala)
  5. "Directions for Solving Bad Workman Practices in Power Distribution Line Connections", Engineer, Vol.: XXXXV, No. 03, 2012, p33-44 (Co-authors: AGDP Jayasekara, WDAS Wijayapala)
  6. "A Basis for a Natural Electricity Tariff - A Case Study of  the Domestic sector", (Co-author: N. Wickramarachchi), SLEMA Journal, Vol 15, Nos. 1 and 2, Sept 2012
  7. "Equal Right to Sri Lanka’s Natural Energy Resources", Vidulka, August 2011, p  (Co-author: N. Wickramarachchi) - Presented at National Energy Symposium, BMICH, Colombo
  8. "Analysis of Surface Flashover of 33kV Pin Type Insulators due to Saline Pollution", Engineer Vol.: XXXXIII, No. 04, October 2010, p11-16 (Co-authors: N.H.C Janaka, D.G.R. Fernando) 
  9. "Inclusion of Small Signal Stability Assessment to Electromagnetic Transient Programs", Proceedings of 4th IASTED International Conference, April 2008, Malaysia, POWER AND ENERGY SYSTEMS (AsiaPES 2008), ISBN CD: 978-0-88986-732-1. (Co-authors : U.D. Annakkage, C.Karawita, D.Muthumuni, R.P. Jayasinghe), p261-265 Paper presented at the 4th IASTED Asian Conference on Power and Energy Systems April 2 – 4, 2008, Langkawi, Malaysia.
  10. "Intelligent Lightning Warning System", Proceeding of the 2007 Third International Conference on Information and Automation for Sustainability, Melbourne, Australia, December 2007, pp 19-24. (Co-authors : Geeth Jayendra, Sisil Kumarawadu, Lilantha Neelawala, Chathura Jeevantha, P. Dharmapriya)
  11. "Determination of One Dimensional Earth Resistivity Profile in Multilayer Soil", Proceeding of 13th Annual Symposium on Research for Industry, Engineering Research Unit, University of Moratuwa, Sri Lanka, October 2007, pp.8-11. (Co-authors : IT Dharmadasa, L Udawatta and WDAS Wijepala)
  12. "Design and Construction of Constant Voltage Transformer", Proceedings of the First International Conference on Industrial and Information Systems, ICIIS 2006, 8 - 11 August 2006, Sri Lanka, p 40-45 (co-authors: N.N.R Mendis, E.M.M.B Yatiyana, K.C. Wijesinghe and R. Perera)
  13. "Power System Harmonic Effects on Distribution Transformers and New Design Considerations for K Factor Transformers", Transactions IEE Sri Lanka, Colombo, vol 6, No 1, Aug 2005, p 22-30 (co-authors: N.R Jayasinghe, K.B.I.M. Perera)
    Paper presented at the tenth annual conference of the IEE Sri Lanka, September 2003, Hotel Galadari, Colombo.
  14. "Drying Time for Transformer Core and Winding Assembly", Transactions IEE Sri Lanka, Colombo, vol 6, No 1, Aug 2005, p 40-43 (co-authors: P.D.C. Wijayatunga, Kosala Gunawardhana, Rukshika Pathberiya, N.H.K.L. Sirisena, J.A.Vitharana, K.R.S.Dematagolla, J.A.I.T.Jagoda)
    Paper presented at the tenth annual conference of the IEE Sri Lanka, September 2003, Hotel Galadari, Colombo.
  15. "Development of a Software Package for Calculating Current Rating of Medium Voltage Power Cables", Transactions of the IEE Sri Lanka, vol 5, No 1, Sep 2003, p50-57. (co-authors: D.G.A.K. Wijeratna, H.J.C. Peiris, H.Y.R.Perera)
    Paper presented at the ninth annual conference of the IEE Sri Lanka, September 2002, Hotel Galadari, Colombo.
  16. "Coconut Oil Insulated Distribution Transformer", Transactions of the IEE Sri Lanka, vol 4, No 2, Sep 2002, p 1-5 (co-authors: D.C. Abeysundara, C. Weerakoon, K B M I Perera, K C Obadage and K.A.I. Gunatunga)
    Paper presented at the eight annual conference of the IEE Sri Lanka Centre, September 2001, Hotel Galadari, Colombo.
  17. "Coconut oil as an alternative to transformer oil", ERU - Proceedings of the 7th Symposium on Research for Industry, Moratuwa, Nov 2001, p A12-A22, (co-authors: D.C. Abeysundara, C. Weerakoon, K.A.I. Gunatunga and K.C. Obadage)
  18. "Historical Development of the Transformer", Transactions IEE Sri Lanka, Colombo, April 2002, vol 4, No 1, p 1-15.
    Presented as the IEE Sri Lanka Chairman's Lecture on 14 November 2000, Colombo
  19. "Software Guided Safe Loading of Transformers", Proceedings, International Conference on Power Transformers, New Delhi, April 2000, p 117-124 (co-author: KBMI Perera)
  20. "AC-small power DC hybrid transmission for improving power system stability", Electric Power Systems Research, Elsevier, vol 56., 2000, p 9-15 (co-authors: Pahalawaththa, N., Annakkage, U., and Boys, J., )
  21. "Increasing the power transfer capability of an ac transmission line using a parallel small power dc link", Transactions IEE Sri Lanka, Colombo, vol 3, No 2, April 2001, p 52-55. (co-author: H Jahan C Peiris)
    Paper presented at the fifth annual conference of the IEE Sri Lanka Centre, September 1999, Hotel Galadari, Colombo.
  22. "Lightning protection of pole mounted transformers and its application in Sri Lanka", Transactions IEE Sri Lanka, Colombo, Vol 3, No 2, April 2001, p 43-51. (co-author: D A J Nanayakkara)
    Paper presented at the fifth annual conference of the IEE Sri Lanka Centre, September 1999, Hotel Galadari, Colombo.
  23. "Loading of Transformer beyond nameplate rating", Engineer, vol xxx, September 1999, No 03, Colombo, pp 58-65(co-author: KBMI Perera)
  24. "The co-ordination of directional overcurrent relays based on direct iterative method", AUPEC '98, Tasmania, Australia, Vol. 1, September 1998, p331-336 (co-authors: Dezhi Luo, C.P. Arnold).
  25. "Estimation of Optimum Transformer Capacity Based on Load Curve", Transactions of the IEE Sri Lanka, Jan 2001, Vol 3, No 1, p 36-40.
    Paper presented as "Optimization of Transformer Design based on Load Curve", IEE Sri Lanka Centre, Annual Sessions '98, September 1998, p 1-6 (co-authors: KBMI Perera et Al)
  26. "A Feasibility study on the use of alternative energy sources for tea drying", UPEC 1997, UMIST, Manchester, UK, September 1997, p 1-4 (co-authors: Wijayatunga et Al)
  27. "Cost-benefit analysis for introduction of compact fluorescent lamps - A case study for Sri Lanka (1995)", SLEMA Journal, Vol 9, No 1, April 2000, p 3-5 (co-authors: W J L S Fernando, V B Wijekoon et Al)
    Paper presented at SLEMA Sessions, 1996
  28. "Some measurements on energy efficient compact fluorescents", Symposium on Research for Industry, University of Moratuwa, 12 July 1996, (sole author)
  29. "Power Factor and Harmonic distortion in Compact Fluorescent Lamps", Trans IESL, Colombo, 1995, Vol. 1, Part B, p 29-37 (co-author: Wijekoon)
    Discussion on "Power Factor and Harmonic distortion in Compact Fluorescent Lamps", Trans IESL, 1995, vol. II, p 26-28.
  30. "Energy Efficient Lighting for Households: A Survey", SLEMA Journal, vol. 6, No 1, Apr/May 1995, p 1-9 (co-authors: Perera et Al)
  31. "Cost Effective Insulation through Proper Co-ordination", Professor R H Paul Commemoration Lecture 1994, Engineer, Colombo, vol. xxiii, No 1, June 1995, p 59-74 (sole author)
  32. "Efficient Simulation Techniques for some common non-linear elements in Power System Studies", PSCC Conference, vol. 11, France, Aug - Sep 1993, p 1-7, (Co-authors: McLaren et Al)
  33. "A simulation model for capacitively coupled voltage transformers in relay studies", Proceedings, IPEC Conference, Institution of Engineers, Singapore, March 1993, p 555 - 560 (Co-authors: Keerthipala et Al)
  34. "Frequency dependant Magnetic core-loss simulation in time domain studies", Trans IESL, Colombo, 1992, Vol. 1, p 238-245 (sole author)
    Discussion on "Frequency dependant Magnetic core-loss simulation in time domain studies", Trans IESL, 1992, vol. II, p 49-50.
  35. "Inclusion of frequency dependant losses in transformer flux-current excursions", IJEEE, Manchester, Oct 1992, vol. 29, No 4, p 321-328 (sole author)
  36. "Improved Simulation models for current and voltage transformers in relay studies", IEEE Trans on Power Delivery, Jan 1992, Vol. 7, No 1, p 152-159 (co-authors: McLaren et Al)
  37. "Generation of Transient flux-current excursions in instrument transformer cores", Trans IESL, Colombo, 1991, Vol. 1, p 96-101 (co-author: McLaren)
    Discussion on "Generation of Transient flux-current excursions in instrument transformer cores", Trans IESL, Colombo, 1991, Vol. II, p 32-34.
  38. "A computationally efficient MOV model for series compensation studies", IEEE Trans on Power Delivery , Oct 1991, Vol. 6, No 4, p 1491-1498 (co-author: McLaren)
  39. "B-H loop representation for transient studies", IJEEE, Manchester, July 1991, vol. 28, No 3, p 261-270, (co-author: McLaren)
  40. "A Framework to Assess the Economics of Wind Power Generation using Horizontal Axis Wind Turbines", Engineer, Colombo, vol. xix, No 02, June 1991, p 46-55 (co-authors: WJLS Fernando et al)
  41. "Closed-loop relay testing with real time electro-magnetic transients simulation", Canadian Electrical Association Proceedings, Toronto, May 1991, p 1-15, (co-authors: McLaren et Al)
  42. "A workstation environment for assessing relay performance", Proc of IEEE/Wescanex '91, Regina, May 1991, p 14-19, (co-authors: McLaren, et Al)
  43. "Energisation of a Transformer feeder", Engineer, Colombo, vol. xix, No 1, March 1991, p 14-24 (sole author)
  44. "Transient response of capacitive voltage transformers", Engineer, Vol. xviii, No 4, Dec 1990, p 27-32 (co-author: McLaren)
  45. "Some comparisons of impedance relaying techniques on a long transmission line", Trans IESL, 1990, Vol. 1, p 82-92, (co-authors: McLaren)
  46. "Simulation of current transformer saturation in power system protection studies", Canadian Conference on Electrical and Computer Engineering, Ottawa, Sep 1990, Vol. 1, No. 9.5, p 1-4, (co-author: McLaren)
  47. "A workstation environment for assessing relay performance under transient conditions", Canadian Conference on Electrical and Computer Engineering, Ottawa, Sep 1990, Vol. 1, No. 9.2, p 1-4, (co-authors: McLaren, Gole,.....)
  48. "Some problems in relaying series compensated lines", Canadian Conference on Electrical and Computer Engineering, Ottawa, Sep 1990, Vol. 1, No 1.1, p 1-4, (co-author: McLaren)
  49. "An MOV model for series compensation in transient studies", Proceedings, vol. II, 33rd Mid-West Symposium on Circuit and Systems, Calgary, Aug 1990, p 633-636, (co-author: McLaren)
  50. "Simulation of B-H excursions for transient studies", Proceedings, vol. I, 33 rd Mid-West Symposium on Circuit and Systems, Calgary, Aug 1990, p 370-373, (co-author: McLaren)
  51. "Transient performance of a grid-connected induction generator for small-scale power generation", Engineer, March 1990, vol. xviii, No. 1, p 37-50, (co-authors: Fernando & Karunaratne)
  52. "Solution of an ill-conditioned fast decoupled load flow problem using acceleration", IJEEE, Jan 1990, vol. 27, No. 1, p 53-61, (sole author)
  53. "Evaluation of the reliability of Power Systems using the improved dc load flow technique" Engineer, Colombo, June 1989, vol. xvii, No. 2, p 24-36, (co-authors: Induruwa & Malembeka)
  54. "A solution of the power system load flow problem on the digital computer using the improved dc load flow technique", Engineer, Colombo, March 1989, vol. xvii, No 1, p 14-21 (co-authors: Induruwa & Malembeka)
  55. "Accelerated solution of the fast decoupled Newton-Raphson load flow algorithm in power system studies", Engineer, Colombo, September/December 1988, vol. xvi, No 3 & 4, p 3-11, (Co-author: Vilathgamuwa)
  56. "Representation of Magnetisation Curves over a wide region using a non-integer power series", IJEEE, Manchester UP, vol. 25, No 4, October 1988, p 335-340, (Sole author)
  57. "Transformer equivalent network for switching surge studies", Engineer, Colombo, Jun 1988, vol. xvi, No 2, p33-47 (Sole author)
  58. "Transient stability study of a simplified Sri Lanka power system", Engineer, Colombo, , March 1988, vol. xvi, No 1, p 24-38, (co-authors: Weerasooriya et Wijayatunga)
  59. "Power curve representation of transformer magnetisation characteristic", Engineer, Colombo, June 1987, vol. xv, No 2, p 47-52 (Sole author)
  60. "Optimal load flow study on the 1984 power system of Sri Lanka", Engineer, Colombo, Sep 1987, vol. xv, No 3, p 32-39 (Co-authors: Karunaratne & de Silva)
  61. "Inclusion of surge diverters in system overvoltage calculations", Proc IEE, vol. 126, No 12, Dec 1979, p1263-1268, (Co-author: Cornick)
  62. "The dc network analyser: An effective instrument for the teaching of the load flow problem", IJEEE, vol. 15, p 351-359, Manchester UP, 1978 (Co-authors: Karunaratne et Al)
  63. "A fast decoupled sparsity oriented algorithm for the solution of the load flow problem in electric power systems", Trans IESL, p 36-44, Colombo, 1976, (co-authors: Karunaratne et Al)

Course Textbooks

 

  1. "High Voltage Engineering", 1995, Published by University of Moratuwa, Sri Lanka 217 pages, (sole author) - course text for UEE403
  2. "Design of Electrical Installations", 1991, Published by Open University of Sri Lanka, 175 pages (co-authors: Sriyananda et Al) - course text for ECD 2223
  3. "Building Engineering Theory and Design - Block 3", 1988, Published by Open University of Sri Lanka, (co-authors: Herath et Al)
  4. "Protection of Power Systems", 1986/88, Published by Open University of Sri Lanka, 384 pages (co-authors: Sriyananda et Al) - course text for TED2302
  5. "Power System Studies", 1986, Published by Open University of Sri Lanka, 168 pages (co-authors: Sriyananda et Al) - course text for TED2304
  6. "Generation, Transmission & Distribution", 1984/85, Published by Open University of Sri Lanka, 410 pages (co-authors: Sriyananda et Al) - course text for TEC233
  7. "Introduction to Electrical Machines", 1984/85, Published by Open University of Sri Lanka, 378 pages (co-authors: Sriyananda et Al) - course text for TEC232
  8. "Electrical Measurements", 1984/85, Published by Open University of Sri Lanka, 409 pages (co-authors: Sriyananda et Al) - course text for TEC231
  9. "Principles of Electrical Engineering 2", 1985, Published by Open University of Sri Lanka, 360 pages (co-authors: Sriyananda et Al) - course text for TEC132
  10. "Principles of Electrical Engineering 1", 1983/84, Published by Open University of Sri Lanka, 318 pages (co-authors: Sriyananda et Al) - course text for TEC131

Google Scholar Profile

 

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