Journal Papers

  1. S. Bhattarai, R. Karki, P. Piya, 2019. Reliability Modeling of Compressed Air Energy Storage for Adequacy Assessment of Wind Integrated Power System, IET Generation, Transmission & Distribution, DOI: 10.1049/iet-gtd.2019.0179, online Aug 19, 2019.
  2. S. Bhattarai, R. Karki, P. Piya, 2019. Reliability and Economic Assessment of Compressed Air Energy Storage in Transmission Constrained Wind Integrated Power System, Elsevier Journal of Energy Storage, Vol. 25, 100830, https://doi.org/10.1016/j.est.2019.100830.
  3. N. Nepal, R. Karki, 2019. Quantifying Power System Operational Reliability, Applied Sciences, Appl. Sci. 2019, 9(14), 2777; https://doi.org/10.3390/app9142777.
  4. P. Gautam, R. Karki, P. Piya, 2018. Probabilistic Modeling of Energy Storage to Quantify Market Constrained Reliability Value to Active Distribution Systems, IEEE Trans. Sustainable Energy, DOI: 10.1109/ TSTE.2019.2917374, online.
  5. S. Adhikari, R. Karki, P. Piya, 2019. Recovery Risk Mitigation of Wind Integrated Bulk Power System with Flywheel Energy Storage, IEEE Trans. Power Systems, 34(5), p. 3484 - 3493.
  6. T. Shrestha, R. Karki, 2018. Quantifying Energy Storage Augmented Capacity Value of Wind Generation in Electricity Market. International Journal of Smart Grid and Clean Energy, 2018
  7. S. Adhikari, R. Karki, P. Piya, 2018. Integrated Disturbance Response Modelling of Wind Integrated Power Systems to Quantify the Operational Reliability Benefits of Flywheel Energy Storage, IEEE Trans. Sustainable Energy, 10(3), 1152 – 1160.
  8. M. Padhee, R. Karki, 2018. Bulk System Reliability Impacts of Forced Wind Energy Curtailment, AIMS Energy, 2018, 6(3), 505–520.
  9. A. Alferidi, R. Karki, 2017. Development of Probabilistic Reliability Models of Photovoltaic System Topologies for System Adequacy Evaluation, Applied Science, 2017, 7(2), 176; doi:10.3390/app7020176.
  10. S. Miao, K. Xie, H. Yang, R. Karki, H. Tai, T. Chen, 2016. A Mixture Kernel Density Model for Wind Speed Probability Distribution Estimation, Energy Conversion and Management, Elsevier, 126 (2016), pp. 1066–1083.
  11. M. Padhee, R. Karki, 2016. RELIABILITY/ENVIRONMENTAL IMPACTS OF WIND ENERGY CURTAILMENT DUE TO RAMPING CONSTRAINTS, International Journal of Systems Assurance Engineering and Management, Springer, DOI :10.1007/s13198-016-0521-4.
  12. X. Wang, R. Karki, 2016. Exploiting PHEV to Augment Power System Reliability, IEEE Transactions on Smart Grid, doi: 10.1109/TSG.2016.2515989, pp.1-9.
  13. S. Thapa, R. Karki, 2015. Reliability Benefit of Energy Storage in Wind Integrated Power System Operation, IET Generation, Transmission & Distribution, doi: 10.1049/iet-gtd.2015.0162, pp.1-8.
  14. D. Dhungana, R. Karki, 2014. Data Constrained Adequacy Assessment for Wind Resource Planning, IEEE Transactions on Sustainable Energy, 6(1), 219-227.
  15. R. Jansen, R. Karki, 2015. Development of a smart micro-grid management system, International Journal on System Assurance Engineering and Management, Springer, 6(2),110–118.
  16. S. Thapa, R. Karki, R. Billinton, 2013. Utilization of the Area Risk Concept for Operational Reliability Evaluation of a Wind-Integrated Power System, IEEE Transactions on Power Systems, 28(4), 4771-4779.
  17. R. Karki, D. Dhungana, R. Billinton, 2013. An Appropriate Wind Model for Wind Integrated Power Systems Reliability Evaluation Considering Wind Speed Correlations, Applied Sciences, 2013, 3, 107-121, Feb 2013.
  18. R. Karki, S. Thapa and R. Billinton, 2012. A Simplified Risk-Based Method for Short-Term Wind Power Commitment, IEEE Transactions on Sustainable Energy, 3(3), 498 - 505.
  19. R. Karki, S. Thapa and R. Billinton, 2012. Operating Risk Analysis of Wind-integrated Power Systems, Electric Power Components and Systems, Taylor & Francis, 40:4, 399-413.
  20. R. Billinton, R. Karki, Y. Gao, D. Huang, P. Hu, W. Wangdee, 2012. Adequacy Assessment Considerations in Wind Integrated Power Systems, IEEE Transactions on Power Systems, 27(4), 2297-2305, Nov. 2012.
  21. R. Billinton, Y. Gao, and R. Karki, 2012 “Adequacy assessment of generating systems containing wind power considering wind speed correlation,” IET Renew. Power Gen., vol. 3, no. 2, pp. 217–226, 2012.
  22. R. Karki, P. Huand R. Billinton, 2010. Reliability evaluation considering wind and hydro power coordination, IEEE Trans. on Power Systems, 25(2), 685-693.
  23. R. Billinton, Y. Gao and R. Karki, 2010. Application of a joint deterministic-probabilistic criterion to wind integrated bulk power system planning, IEEE Trans. on Power Systems, 25(3), 1384-1392.
  24. R. Billinton and R. Karki, 2010. Incorporating wind power in generating system reliability evaluation, International Journal of Systems Assurance Engineering and Management, Springer, 1(2), 120-128.
  25. N. Karki, R. Karki, A.K. Verma, 2010. Estimation of cost of unserved energy: A customer survey approach, International Journal of Systems Assurance Engineering and Management, Springer, 1(2), 157-162.
  26. N. Karki, R. Karki, A. K. Verma, D. Jha and J. Shrestha, 2010. Commercial customers electricity supply outage cost estimation in a developing country, Communication in Dependability Quality and Management, SCIndeks, 13(4), 48-58.
  27. K. Xie K., B. Hu and R. Karki, 2010. Tracing the component unreliability contributions and recognizing the weak parts of a bulk power system, European Transactions on Electrical Power, Wiley, 21(1), 254-262.
  28. P. Hu, R. Karki and R. Billinton, 2009. Reliability evaluation of generating systems containing wind power and energy storage, IET Generation, Transmission & Distribution, 3(8), 783–791.
  29. N. Karki, A.K. Verma, R. Karki and A. Mishra, 2009. Residential customers’ outage cost analysis for urban and semi-urban areas in a developing country, International Journal of Reliability, Quality And Safety Engineering, World Scientific, 16(6), 581-593.
  30. R. Karki, J. Patel, 2009. Reliability Assessment of a Wind Power Delivery System, Journal of Risk and Reliability, Proceedings of the Institution of Mechanical Engineers, 223(1), 51-58.
  31. R. Billinton, Y. Gao and R. Karki, 2009. Composite System Adequacy Assessment Incorporating Large-Scale Wind Energy Conversion Systems Considering Wind Speed Correlation, IEEE Trans. on Power Systems, 24(3), 1375-1382.
  32. R. Billinton, B. Karki, R. Karki and R. Gokaraju, 2009. Unit Commitment Risk Analysis of Wind Integrated Power Systems, IEEE Trans. on Power Systems, 20(2), 930-939.
  33. R. Karki, 2008. Renewable Energy Credit Driven Wind Power Growth for System Reliability, Electric Power Systems Research, Elsevier, 77(7), 797–803.
  34. Y. Ding, P. Wang, L. Goel, R. Billinton and R. Karki, 2007. Reliability Assessment of Restructured Power Systems Using Reliability Network Equivalent and Pseudo-sequential Simulation Techniques, Electric Power Systems Research, Elsevier,77(12), 1665-1671.
  35. R. Karki, P. Hu and R. Billinton, 2006. A Simplified Wind Power Model for Reliability Evaluation, IEEE Trans. on Energy Conversion, 21(2), 533-540.
  36. R. Karki, 2006. Reliability Focused and Market Driven Growth of Wind Power in Electric Power Systems, International Review of Electrical Engineering, Praise Worthy, 1(1), 170-177.
  37. R. Karki and R. Billinton, 2006. Impact of Renewable Energy Unit Availability on Power System Adequacy, International Journal of Power and Energy Systems, ACTA Press, 26(2), 147-152.
  38. R. Karki and R. Billinton, 2004. Cost Effective Wind Energy Utilization for Reliable Power Supply, IEEE Trans. on Energy Conversion, 19(2), 435-440.
  39. R. Billinton andR. Karki, 2003. Reliability/Cost Implications of PV Energy Utilization in Small Isolated Power Systems, Journal of Reliability Engineering and System Safety, 79(1), 11-16.
  40. R. Karkiand R. Billinton, 2001. Reliability/Cost Implications of PV and Wind Energy Utilization in Small Isolated Power Systems, IEEE Transactions on Energy Conversion, 16(4), 368-373.
  41. R. Billinton andR. Karki, 2001. Maintaining Supply Reliability of Small Isolated Power Systems Using Renewable Energy, IEE Proceedings – Generation, Transmission and Distribution, 148(6), 530-534.
  42. R. Billinton and R. Karki, 2001. Capacity Expansion of Small Isolated Power Systems Using PV and Wind Energy, IEEE Transactions on Power Systems, 16(4), 892-897.
  43. R. Karkiand R. Billinton, 2000. Reliability/Cost Implications of Utilizing Wind Energy in Small Isolated Power Systems, Wind Engineering, 24(5), 379-388.
  44. R. Billinton and R. Karki, 1999. Application of Monte Carlo Simulation to Generating System Well-Being Analysis, IEEE Transactions on Power Systems, 14(3), 1172-1177.
  45. R. Billinton and R. Karki, 1999. Capacity Reserve Assessment Using System Well-Being Analysis, IEEE Transactions on Power Systems, 14(2), 433-438.
  46. R. Billinton and R. Karki, 1999. Capacity Planning in Small Isolated Power Systems Using Probabilistic Methods, IEE Proceedings – Generation, Transmission and Distribution, 146(1), 61-64.

Books

  1. N. Karki, R. Karki, A.K. Verma, J. Choi. Sustainable Power Systems: Modelling, Simulation and Analysis. Springer, ISSN: 2510-2524.
  2. R. Karki, R. Billinton, A.K. Verma, 2014. Reliability Modeling and Analysis of Smart Power Systems. Springer, ISBN 978-81-322-1798-5.
  3. R. Billinton, R. Karki, A.K. Verma, 2013. Reliability and Risk Evaluation of Wind Integrated Power Systems. Springer, ISBN 978-81-322-0986-7.
  4. Complete Publications of Roy Billinton

Chapters in Books

  1. R. Karki, Reliability of Renewable Power Systems, Chapter in Encyclopedia of Sustainable Technologies, Elsevier, (in progress).
  2. R. Jansen, R. Karki, Sustainable Energy Optimization in a Smart Microgrid, Chapter in Sustainable Power Systems: Modelling, Simulation and Analysis. Springer, (in progress).
  3. X. Wang, R. Karki, Reliability Assessment of Power Grid Supporting Sustainable Transportation, Chapter in Sustainable Power Systems: Modelling, Simulation and Analysis. Springer, (in progress).
  4. V. V. Vadlamudi, R. Karki, G. H. Kjolle, K. Sand, 2014. Reliability-Centric Studies in Smart Grids: Adequacy and Vulnerability Considerations, Chapter 1 of Reliability Modeling and Analysis of Smart Power Systems, Springer, Page 1-15, ISBN 978-81-322-1798-5
  5. S. Thapa, R. Karki, R. Billinton, 2013. Application of Hourly Time Series Models in Day Ahead Wind Power Commitment, Chapter 4 of Reliability and Risk Evaluation of Wind Integrated Power Systems. Springer, ISBN 978-81-322-0986-7.
  6. R. Billinton, Y. Gao, D. Huang, R. Karki, 2011. Adequacy Assessment of Wind-Integrated Composite Generation and Transmission Systems, Chapter 4, Innovations in Power Systems Reliability, Edited by Anders, George; Vaccaro, Alfredo, Springer, London, UK, 141-168.

Expository and Review Articles

  1. R. Billinton, A. K. Verma, R. Karki, 2010. Editorial for the Speical Issue on “Critical Challenges and Practices for Reliability Assurance of Power Systems”, International Journal of Systems Assurance Engineering and Management, Springer, 85-86.
  2. R. Karkiand R. Billinton, 2007. “Reliability Evaluation of the Whitehorse-Aishihik-Faro System and Reliability Assessment of the WAF System Using 1996-97 System Data”, YUB Report to Commissioner in Executive Council re YEC 20-Year Resource Plan, (Exhibit B-6).

Technical Reports

  1. R. Karki, M. Padhee, July 2014, Wind Energy Utilization and Reliability Assessment of the SaskPower System Considering Wind Diversity, Report for SaskPower, Funded by NSERC CRD Grant, (31 pages).
  2. R. Karki, June 2014, A Reliability Study of 500 kV Transmission Facility Groups, Report for ATCO Electric Funded by Industry, (45 pages).
  3. R. Jansen, A. Islam, R. Karki, Jan 2014, Development of a Smart Microgrid Management System, Report for Check-It Solutions, Funded by NSERC Engage Grant, (30 pages).
  4. R. Karki, D. Dhungana, June 2013, Reliability Evaluation of the SaskPower System Considering Regional Wind Power Integration, Report for SaskPower, Funded by NSERC CRD Grant, (133 pages).
  5. R. Karki and R. Billinton, Aug. 2011. Analyses of Transmission Constraints on Generation Adequacy Models for the Yukon Energy Corporation, Report for Yukon Energy Corporation, Funded by Industry, (74 pages).
  6. R. Karki and R. Billinton, June 2011. Generation Adequacy Sensitivity Studies on the SaskPower System, Report for SaskPower, Funded by Industry, (108 pages).
  7. R. Karki and R. Billinton, March 2011. Basic Generation Adequacy Evaluation of the SaskPower System, Report for SaskPower, Funded by Industry, (59 pages).
  8. R. Billinton and R. Karki, Dec. 2009. A Proposed Reliability Framework for SaskPower, Report for SaskPower, Funded by Industry, (15 pages).
  9. R. Karki, Dec. 2006. "WAFSREL – User's Manual" for WAFSREL software developed for the Yukon Energy Corporation, Funded by Industry, (30 pages).
  10. R. Karki and R. Billinton, July 2005. Reliability Assessment of the WAF System Using 1996-97 System Data, Report for Yukon Energy Corporation, Funded by Industry, (12 pages).
  11. R. Karki and R. Billinton, February 2005. Reliability Evaluation on the Whitehorse-Aishihik-Faro System, 60 pages technical report for the Yukon Energy Corporation.
  12. R. Karki, October 2003. Reliability Study for the Turks and Caicos Islands, 7 pages report on preliminary reliability studies for the Turks and Caicos Islands Electrical Power Generating System.