
Contact Information 
Room Number: 224 
Department of Electrical Engineering, 
IIT Bombay, Powai, 
Mumbai 400 076, 
India 
Fax: +912225723707 

Phone:+912225767435  Email: soman[AT]ee.iitb.ac.in 
Homepage 




Publications

 journal papers   Swati Lavand and S. A. Soman, "Predictive Analytic to Supervise Zone 1 of Distance Relay using Synchrophasors", IEEE Transaction on Power Delivery, 2016.
 M.S.S. Rao and S.A. Soman, "Marginal Pricing of Transmission Services Using MinMax Fairness Policy," in Power Systems", IEEE Transactions, vol. 30, no. 2, pp. 573584, Mar. 2015.
 Kalyan Dasgupta, A. M. Kulkarni and S. A. Soman, "On the wave propagation of disturbances in homogeneous electromechanical systems", Journal of vibration and acoustics, 2013.
 Kalyan Dasgupta, A. M.Kulkarni and S. A. Soman, "Studying Electromechanical Wave Propagation and Transport Delays in Power Systems", IJEEPS, 2013.
 Gopal Gajjar and S. A. Soman, "Power System Oscillation Modes Identifications: Guidelines for applying TLSESPRIT Method", IJEEPS , 2013.
 P.V. Navalkar and S.A. Soman, "Secure Remote Backup Protection of Transmission Lines Using Synchrophasors", IEEE Transactions on Power Delivery, vol. 26, no. 1, pp. 8796, 2011.
 M. S. S. Rao, S. A. Soman, P. Chitkara, R. K. Gajbhiye, N. Hemachandra, B. L. Menezes, "MinMax Fair Power Flow Tracing for Transmission System Usage Cost Allocation: A Large System Perspective", IEEE Transactions on Power Systems, vol. 25, no. 3, pp. 14571468, Aug. 2010.
 S. Dambhare, S. A. Soman, M. Chandorkar, "Current Differential Protection of Transmission Line using the Moving Window Averaging Technique", IEEE Transactions on Power Delivery, vol. 25, no. 2, pp. 610620, Apr. 2010.
 S. Dambhare, S. A. Soman, M. Chandorkar, "Adaptive Current Differential Protection Schemes for Transmission Line Protection", IEEE Transactions on Power Delivery, vol. 24, no. 4, pp. 18321841, Oct. 2009.
 D. Dua, S. Dambhare, R. K. Gajbhiye, S. A. Soman, "Optimal Multistage Scheduling of PMU Placement: An ILP Approach", IEEE Transactions on Power Delivery, vol. 23, no. 4, pp. 18121820, Oct. 2008.
 R. K. Gajbhiye, ,D. Naik, S. Dambhare, S. A. Soman, "An Expert System Approach for MultiYear ShortTerm Transmission System Expansion Planning: An Indian Experience", IEEE Transactions on Power Systems, vol. 23, no. 1, pp. 226237, Feb. 2008.
 R K Gajbhiye, B. Gopi, P. Kulkarni, S. A. Soman, "Computationally Efficient Methodology for Analysis of Faulted Power Systems With Series Compensated Transmission Lines: A Phase Coordinated Approach", IEEE Transactions on Power Delivery, vol. 23, no. 2, pp. 873880, Apr. 2008.
 R. K. Gajbhiye, A. De, S. A. Soman, "Computation of Optimal Break Point Set of Relays—An Integer Linear Programming Approach", IEEE Transactions on Power Delivery, vol. 22, no. 4, pp. 20872098, Oct. 2007.
 A. R. Abhyankar, S. A. Soman and S. A. Khaparde, "MinMax Fairness Criteria for Transmission Fixed Cost Allocation", Power Systems, IEEE Transactions, vol. 22, pp. 20942104, Nov. 2007.
 A. R. Abhyankar, S. A. Soman and S. A. Khaparde, "Optimization approach to real power tracing: an application to transmission fixed cost allocation", Power Systems, IEEE Transactions, vol. 21, pp. 1350 – 1361, Aug. 2006.
 Abhyankar A. R.; Khaparde; Soman S. A.; Pentayya P., "A Transmission pricing mechanism based on power tracing for central transmission utility in India", International Journal of Emerging Electric Power Systems, vol. 1, no. 1, Feb. 2005.
 A. R. Abhyankar, S. A. Soman and S. A. Khaparde, "Real Power Tracing: An Optimization Approach", International Journal of Emerging Electric Power Systems, vol. 3, no. 2, 2005.
 A. R. Abhyankar, S. A. Khaparde, S. A. Soman and P. Pentayya , "A Transmission pricing mechanism based on power tracing for central transmission utility in India", International Journal of Emerging Electric Power Systems, vol. 2, no. 1, 2005.
 A. P. Agalgaonkar, S. V. Kulkarni, S. A. Khaparde, and S. A. Soman, "Distributed Generation Opportunity under Availability Based Tariff and Reliability Considerations", International Journal of Emerging Electric Power Systems, vol. 2, no. 1, 2005.
 Soman, S.A.; Nguyen, T.B.; Pai, M.A.; Vaidyanathan R., "Analysis of angle stability problems: a transmission protection systems perspective", IEEE Transactions on Power Delivery, vol. 19, no. 3, pp. 10241033, Jul. 2004.
 A. P. Agalgaonkar, S. V. Kulkarni, S. A. Khaparde, and S. A. Soman, "Placement and penetration of distributed generation under standard market design", International Journal of Emerging Electric Power Systems, vol. 1, no. 1, 2004.
 G. R. Gajjar, S. A. Soman, S. A. Khaparde and P. Nagaraju, "Application of actor  critic learning algorithm for optimal bidding problem of a Genco", IEEE Trans. On Power System, vol. 18, no. 1, pp. 1118, Feb. 2003.
 S. Pandit, S. A. Soman and S. A. Khaparde, "Design of generic direct sparse Linear system solver in C++ for power system analysis", IEEE Trans. on Power Systems, vol. 16, no. 4, pp. 647652, Nov. 2001.
 Shubha Pandit, S. A. Soman and S. A. Khaparde, "Object Oriented network Topology processor", IEEE Computer Applications in Power, vol. 14, no. 2, pp. 4246, Apr. 2001.
 Shubha Pandit, S. A. Soman and S. A. Khaparde, "Object Oriented Design For Power System Applications", IEEEComputer Applications in Power, vol. 13, pp. 4347, Oct. 2000.
 Pandian A.; Parthasarathy K.; Soman S.A., "Towards faster Givens rotations based power system state estimator", IEEE Transactions on Power Systems, vol. 14, no. 3, pp. 837843, Aug. 1999.
 A. Pandian, S. A. Soman, K. Parthasarathy, "Variable pivot column oriented givens rotations based power system state estimator", International Journal of Electrical Power & Energy Systems, vol. 20, no. 3, pp. 183189, Mar. 1998.
 A. Pandian, K. Parthasarathy, D. Thukaram and S. A. Soman, "A numerically stable decomposition based power system state estimation algorithm", International Journal of Electrical Power & Energy Systems, vol. 20, no. 1, pp. 1723, Jan. 1998.
 Soman S.A.; Parthasarathy K.; Thukaram D., "Curtailed number and reduced controller movement optimization algorithms for real time voltage/reactive power control", IEEE Transactions on Power Systems, vol. 9, no. 4, pp. 20352041, Nov. 1994.

 books   S. A. Soman, S. A. Khaparde and Shubha Pandit, "Computational methods for large sparse power system analysis: An object oriented approach", Nov. 2001.

 conference papers/book chapters   S. A. Soman, S. A. Lavand, G. R. Gajjar and Rajeev Gajbhiye, "Mining Spatial Frequency Time Series Data For Event Detection in Power Systems" in 13th IET International Conference on Developments in Power Systems Protection, Edinburgh, Scotland, UK, Mar. 2016.
 K. Khandeparkar, S. A. Soman, K. Ramamritham, R. Gupta, A. M. Kulkarni and G. R. Gajjar, "Timely query processing in Smart Electric Grids: Algorithms and Performance in EEnergy" in International Conference on Future Energy Systems, Banglore, Jul. 2015.
 Y.K. Bichpuriya, S.A.Soman and A. Subramanyam, "Robust probability density forecast of yearly peak load" in International Conference on Robust Statistics (ICORS), Halle, Germany 2014.
 Y.K. Bichpuriya, S. A. Soman and A. Subramanyam, "Nonparametric probability density forecast of an hourly peak load during a month" in Power Systems Computation Conference (PSCC), Wroclaw 2014.
 K. A. Salunkhe, Gopal Gajjar, S. A. Soman and A. M. Kulkarni, "Implementation and applications of a Wide Area Frequency Measurement System synchronized using Network Time Protocol" in IEEE PES General Meeting, 2014, National Harbour MD USA 2014.
 M. J. Punjabi, P. G. Awate, R. Gajbhiye, S. A. Soman and K. V. Prasad, "From forecasting to scheduling in short term power procurement using stochastic optimization" in IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGTEurope) Istanbul 2014.
 M. J. Punjabi, P. G. Awate, R. Gajbhiye, S. A. Soman and K. V Prasad , "Short term portfolio optimization for load serving entity considering multiple exchanges and ramping constraints" in EEE PES Innovative Smart Grid Technologies Conference (ISGT), Washington DC 2014.
 Y. K. Bichpuriya, S.A. Soman and A. Subramanyam, "On optimal combination of probability density forecasts using KullbackLeibler divergence criterion" in International Conference on Robust Statistics (ICORS), Halle, Germany 2014.
 Kalyan Dasgupta and S.A.Soman, "1. Line parameter estimation using phasor measurements by the total least squares approach" in IEEE PES General Meeting 2013.
 Kalyan Dasgupta and S.A.Soman, "Line parameter estimation using phasor measurements by the total least squares approach" in IEEE PES General Meeting 2013.
 Gopal Gajjar, A. M. Kulkarni and S. A. Soman, "Interaction of capacitor bank inrush current limiting reactor and medium voltage vacuum circuit breakers" in International Conference on Power Systems Transients 2013.
 Gopal Gajjar and S.A. Soman , "Power System Oscillation Modes Identifications: Guidelines for applying TLSESPRIT Method" in 17th National Power System Conference (NPSC), Dec. 2012.
 Gopal Gajjar and S.A. Soman, "Power System Oscillation Modes Identifications From Wide Area Frequency Measurement System" in Powercon 2012 2012.
 Yogesh Bichpuriya, R.S.S Fernandes and S. A. Soman , "Identification of Anomalous Load Profile for Short Term Load Forecasting" in Powercon 2012 2012.
 Dasgupta Kalyan, Kulkarni A. M and Soman S. A. , "Studying Electromechanical Wave Propagation and Transport Delays in Power Systems" in National Power System Conference 2012.
 Gopal Gajjar and S.A. Soman, "A proposal for distributed architecture for synchronized phasor measurement unit" in International Conference on Power and Energy Systems (ICPS) 2011 , pp. 17,2224, Dec. 2011 .
 R.S.S. Fernandes , Y.K. Bichpuriya, M.S.S. Rao and S.A. Soman, "Day ahead load forecasting models for holidays in Indian context" in International Conference on Power and Energy Systems (ICPS), 2011 , Dec. 2011.
 Yogesh K. Bichpuriya, Swaroop A. Upadhyaya and S. A. Soman, "Optimal location of spare transformers at distribution substations for reliability improvement" in IET Conference on Reliability of Transmission and Distribution Networks (RTDN 2011), , pp. 15 2011.
 Yogesh K. Bichpuriya, Prashant V. Navalkar and S. A. Soman, "Benchmarking of reliability indices for electricity distribution utilities: Approach and discussion" in IET Conference on Reliability of Transmission and Distribution Networks (RTDN 2011), pp. 16 2011.
 R. K. Gajbhiye and S. A. Soman, "Facilitating Emission Trading within Power Exchange EEM10" in 7th International Conference on the European Energy Markets EEM10, Jun. 2010.
 Yogesh Bichpuriya, M.S.S Rao and S.A. Soman, "Combination approaches for short term load forecasting" in IPEC 2010 Conference Proceedings , pp. 818823 2010.
 Yogesh Bichpuriya and S. A. Soman , "Electric Power Exchanges: A Review" in National Power System Conference 2010.
 Rajeev Gajbhiye; S. A. Soman, "New Bid Structures for Power Exchange with Modelling in Integer Linear Programming" in 6th International Conference on the European Energy Market 2009.
 Yogesh Bichpuriya, S.A. Soman and P.R. Apte, "Design and testing of heuristic for market splitting in electric power exchange" in TENCON 2009  2009 IEEE Region 10 Conference , pp. 15 2009.
 Devesh Dua; S. A. Soman, "A Comparative Study of Power Swing Detection Methods" in International Conference on Power System Protection, Bangalore, India, Feb. 2007.
 Sanjay Dambhare; Nandkishore Kinhekar; S. A. Soman; M. C. Chandorkar, "ATPEMTP Analysis of Series Compensated Lines for Distance Protection Schemes" in International Conference on Power System Protection, Bangalore, India, Feb. 2007.
 Sharvari Bendarkar; R. K. Gajbhiye; S. A. Soman, "Optimal Reconfiguration to Improve Voltage Profile of Distribution System using Network Simplex Method" in International Conference on Power Systems, Bangalore, India, Dec. 2007.
 Abhyankar, A.R.; Soman, S.A.; Khaparde, S.A.,, "Tractability of bilateral transactions considering multiplicity of solution space in real power tracing" in IEEE Power India Conference, Apr. 2006.
 Rao, M.S.S.; Soman, S.A.; Menezes, B.L.; Pradeep Chawande; Dipti, P.; Ghanshyam, T., "An expert system approach to shortterm load forecasting for Reliance Energy Limited, Mumbai" in IEEE Power India Conference, pp. 6, Apr. 2006.
 Gajbhiye, R.K.; De, A.; Helwade, R.; Soman, S.A, "A Simple and Efficient Approach to Determination of Minimum Set of Break Point Relays for Transmission Protection System Coordination" in International Conference on Future Power Systems, Nov. 2005.
 Abhyankar, A.R.; Soman, S.A.; Khaparde, S.A., "New Paradigm of Tracing Algorithms: Application to Fair Loss Allocation in Indian System" in International Conference on Future Power Systems, Nov. 2005.
 Chawande, P.; Soman, S.A.; Apte, P.R.; Pandit, S., "Experimental Evaluation of Current Transformer Performance under Saturation" in The 7th International Power Engineering Conference, Nov. 2005.
 Abhyankar, A.R.; Soman, S.A.; Khaparde, S.A, "Allocation of Fixed Transmission Costs by Tracing Compliant Postage Stamp Method" in The 7th International Power Engineering Conference, Nov. 2005.
 Gajbhiye, R.K.; Kulkarni, P.; Soman, S.A., "7. Gajbhiye, R.K.; Kulkarni, P.; Soman, S.A., Analysis of Faulted Power Systems in Three Phase CoordinatesA Generic Approach" in The 7th International Power Engineering Conference, 2005, pp. 16, Nov. 2005.
 A. R. Abhyankar, S. A. Khaparde and S. A. Soman, "Loss modeling and tractability of bilateral transactions in real power tracing" in 13th National Power Systems Conference (NPSC), IIT Madras , pp. 370375, Dec. 2004.
 Rajani Vaidyanathan, S. A. Soman, "Distance Relay Coordination Considering Power Swings " in CRIS International Conference on Power Systems and Communications Infrastructures for the future, Beijing, Sep. 2002.
 Shubha Pandit, S. A. Soman, S A Khaparde, "Object oriented set theoretic implementation of minimum degree algorithm" in 14th Power Systems Computations Conference, Sevilla, Spain, Jun. 2002.
 Sarika Khushalani, S. A. Khaparde, S. A. Soman, "Congestion management in the emerging energy market structures" in International conference on bulk power transmission systems integration in developing countries, CIGRE regional meeting, New Delhi, pp. 1624, Nov. 2001.
 Pandit, S.; Soman, S.A.; Khaparde, S.A.; Pandian, A., "An OOP based real time reactive power control algorithm for large power systems" in IEEE Power Engineering Society Winter Meeting, pp. 11741179, Jan. 2000.
 G. R. Gajjar, S. A. Khaparde and S. A. Soman, "Modified Model of Negotiations in Market Games Under Deregulated Environment" in 11th National Power Systems Conference , IISc Bangalore, pp. 222228, Dec. 2000.
 Shubha Pandit, S. A. Soman and S. A. Khaparde , "Design Of Network Topology Processor by Graph Theoretic Abstraction" in 11th National Power System Conference, IISc Bangalore, pp. 8994, Dec. 2000.

 patents   S. A. Soman, P. Navalkar, "A system and method for detecting and locating a fault and controlling the tripping of a backup relay in a power transmission network using phasor measurement units", Patent filed in, April 2010 (India).
 S. A. Soman, P. Apte, P. V. Chawande, "Device and method for mitigating magnetic core saturation in a current transformer", India Patent (592/MUM/2008) issued in August 2015 .


Miscellaneous

 Course taught in other Universities (during sabbatical)   Power System Protection (University of Hong Kong, 2008)
 Introduction to Power System Protection, Virginia Tech, 2012.
 Digital Protection of Power System. Institute of Engineering Kathmandu, Nepal, 2002

 Distance Education Contribution   Authored a web course on Power System Protection under NPTEL Programme.
(http://www.nptel.ac.in/downloads/108101039/)
 Authored a video course on Power System Protection under Talk to teacher initiative.
(http://video.colearn.in/cov/courseinfo_1.php?did=5&cid=35)

