Rajesh Karki

     Rajesh Karki  B.E., M.Sc., Ph.D., P. Eng.

    Professor of Electrical and Computer Engineering

    Biography

    Dr. Karki is a Professor in the Power System Research Group at the University of Saskatchewan, a Senior Member of the IEEE, and a Professional Engineer in the province of Saskatchewan. He specializes in the area of power system reliability. He has published about 100 technical papers, 3 books, 6 book chapters and prepared 15 industry reports in this area. He has supervised 32 Master’s and 11 doctoral students, and 3 post-doctoral fellows. Since 2002, he has been conducting reliability studies for Canadian and international electric utilities, and also provided short courses in power system reliability to universities and industries. He has led collaborative research and consulting projects for Saskatchewan Power Corporation, British Colombia Hydro, Yukon Energy Corporation, ATCO Electric, and Check-It Solutions, and has worked in partnership with Manitoba Hydro, Hydro Quebec, Cowessess First Nations Wind Battery Project and Saskatchewan Research Council. He has signed MOU with Central Power Research Institute (India) and Korean Electric Power Research Institute (Korea) to work jointly on wind energy and energy storage reliability research. He also held adjunct and external faculty position at the University of Manitoba, Kathmandu University (Nepal), Chongqing University (China), and Indian Institute of Technology Mumbai (India).  Dr. Karki is currently focus is on reliability impacts of smart-grid initiatives, renewable energy, energy storage, and value based reliability operation and planning.

    Publications

    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.

    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.

    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.

    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.

    D. Dhungana, R. Karki, 2014. Data Constrained Adequacy Assessment for Wind Resource Planning, IEEE Transactions on Sustainable Energy, 6(1), 219-227.

    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.

    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.

    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.

    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.

    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.

    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.

    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.

    R. Karki, P. Hu and R. Billinton, 2010. Reliability evaluation considering wind and hydro power coordination, IEEE Trans. on Power Systems, 25(2), 685-693.

    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.

    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.

    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.

    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.

    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.

    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.

    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.

    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.

    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.

    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.

    R. Karki, 2008. Renewable Energy Credit Driven Wind Power Growth for System Reliability, Electric Power Systems Research, Elsevier, 77(7), 797–803.

    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.

    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.

    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.

    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.

    R. Karki and R. Billinton, 2004. Cost Effective Wind Energy Utilization for Reliable Power Supply, IEEE Trans. on Energy Conversion, 19(2), 435-440.

    R. Billinton and R. 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.

    R. Karki and 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.

    R. Billinton and R. Karki, 2001.  Maintaining Supply Reliability of Small Isolated Power Systems Using Renewable Energy, IEE Proceedings – Generation, Transmission and Distribution, 148(6), 530-534.

    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.

    R. Karki and R. Billinton, 2000. Reliability/Cost Implications of Utilizing Wind Energy in Small Isolated Power Systems, Wind Engineering, 24(5), 379-388.

    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.

    R. Billinton and R. Karki, 1999. Capacity Reserve Assessment Using System Well-Being Analysis, IEEE Transactions on Power Systems, 14(2), 433-438.

    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.

    Research Grants

    Teaching

    EE 212
    Passive AC Circuits

    Basic concepts in AC circuits, power factor, real, reactive and complex power. Loop and nodal analysis, circuit theorems and their application in AC circuits. Wye-delta transformation, series and parallel resonance, circuit response to variable frequencies. Circuit representation of transformers, utilization of the per unit system, Polyphase system, three phase 3-wire and 4-wire systems, star and wye connections, balanced and unbalanced three phase systems, power measurement in three phase systems.

    http://www.engr.usask.ca/classes/EE/212/
    EE 314
    Electrical Power Systems

    An introduction to three-phase power circuits and fundamentals to dc, ac induction type and synchronous machines.

    http://www.engr.usask.ca/classes/EE/314/
    EE 392
    Electrical Engineering Laboratory III

    Laboratory experiments and exercises of design software packages for the corequisite courses.

    http://www.engr.usask.ca/classes/EE/392/
    EE 445
    Reliability Engineering

    This course covers basic reliability concepts; elements of probability and statistics; application of important distributions in reliability evaluation; reliability and availability assessment of series; parallel and complex systems; utilization of Monte Carlo simulation in system reliability evaluation; and Markov modelling in discrete and continuous systems.

    http://www.engr.usask.ca/classes/EE/445/
    EE 850
    Reliability Engineering

    Basic reliability concepts, elements of probability and statistical theory, application of important distributions, reliability in series, parallel and complex systems. Application of Markov chains in the evaluation of repairable system reliability. Utilization of Monte Carlo simulation in basic system reliability evaluation.

    http://www.engr.usask.ca/classes/EE/850/
    EE 851
    Power System Reliability

    Reliability evaluation of static and spinning generating capacity requirements. Interconnected system reliability concepts. Transmission system reliability evaluation. Determination of composite system reliability. Distribution system reliability evaluation. Incorporation of customer interruption costs in the evaluation of power system reliability worth.

    http://www.engr.usask.ca/classes/EE/851/
    EE 990
    Graduate seminar coordinator

    A seminar is held periodically throughout the regular session during which staff and graduate students discuss current research topics. Graduate students are required to attend these seminars.

    http://www.engr.usask.ca/classes/EE/990/

    Research Projects

    Reliability/Cost Evaluation of Modern Power Systems Incorporating Renewable Energy Sources.