Power Electronics + Power Systems Department of Electrical Engineering Indian Institute of Technology - Bombay IIT Bombay Power Electronics & Power Systems Group (PEPS)

Department of Electrical Engineering • 1 B. Tech Program •5 M. Tech Programs • Power Electronics and Power Systems (PE+PS) •Microelectronics • Communication & Signal Processing •Electronic Systems • Control & Computing •Participate in Inter-disciplinary M. Tech Programs in Reliability Engineering & Energy Systems Academia Industry Meet 2003, Electrical Engineering Department

Faculty: PE + PS  M.S. Agarwal: Switchgear, High voltage systems  V. Agarwal: HF power supplies, EMI issues, power factor correction  A.N. Chandorkar: Power semiconductor devices  M. Chandorkar: Electrical power quality, High power drives  K. Chatterjee: Active filters, Drives  B.G. Fernandes: Electrical machine control, Power converters  S.A. Khaparde: Non-conventional energy sources, Deregulation  A.M. Kulkarni: Power system stability, FACTS, HVDC  S.V. Kulkarni: Power transformers, finite element computations  M.B. Patil: Power electronic circuit simulations (SEQUEL)  S.A. Soman: Power system protection, Power system computation  V.P. Sundersingh: Power factor correction  H. Narayanan: Parallel circuit simulation, combinatorial modelling  P. Apte: MEMS, Condition Monitoring Academia Industry Meet 2003, Electrical Engineering Department

Activities • M. Tech in PE+PS  17 courses at the postgraduate level (class and laboratory).  10 courses at the undergraduate level (class and laboratory). •PhD – Distribution System Planning ( 1 ongoing) – Distributed Generation (1 ongoing) –FACTS & Power System Dynamics ( 2 ongoing) –Object Oriented Power System Analysis ( 1 completed) –Coupled Field Formulations (1 ongoing) –Risk evaluation in Deregulated power markets(1 ongoing) • Industrial Consultancy & Sponsored R&D Projects • Short Term Continuation-Education-Program Courses Academia Industry Meet 2003, Electrical Engineering Department

RECENT SHORT TERM COURSES CONDUCTED Electromagnetic and Electrostatic Analysis using MAXWELL software packages Power System Stabilizers Power System Dynamics and Protection Digital Signal Processor Hardware Circuit Design FACTS and HVDC systems System interaction and design aspects of Power Transformers Deregulation in Power Systems Variable Speed AC drives Academia Industry Meet 2003, Electrical Engineering Department

New initiative for Networked Virtual University …. National workshop was recently held for identifying training and research needs in the power sector in India jointly by Electrical Engineering and Energy System Engineering The following action plan is to be evolved and implemented: - Initiative includes planned course offerings and information sharing - Pooling of resources and faculty, pilot distance education module - Consortium/national network/virtual university Power Academia Meet 2003 Organised on 3rd and 4th April 2003 IIT Bombay and Prayas Pune Held at IIT Bombay Participants : 32 Academia Industry Meet 2003, Electrical Engineering Department

Recent Consultancy Projects Analysis and Optimization of Insulation Design in Power Transformers Analysis of creepage distance Optimization of existing lead clearances Optimization of end insulation Review of withstand characteristics of oil - pressboard system Induced Voltage Calculation on Parallel Transmission Lines Estimation of induced voltage in 220 kV line due to current flowing in nearby 400 kV line Calculations under rated current and fault conditions Procedure involves Calculation of self and mutual impedances using Carson’s equations Computation of sequence impedance matrix from phase impedance matrix Calculation on sequence voltages Calculation of induced voltages Academia Industry Meet 2003, Electrical Engineering Department

Consultancy Projects PSS Tuning in Western Grid (WREB) -- ongoing * Study of unstable swing modes * Identification of critical machines * PSS design on those machines * Simulation of entire Western system * Field tests to be done to verify design Kanpur - Ballabhgarh 400kV Thyristor Controlled Series Compensation project (BHEL) -- ongoing * Control Strategy and controller structure * Damping Controller Design /Identification of suitable feedback signal * Simulation of entire Northern system * Lower Level Controller design with detailed simulation of power electronics Substation Automation System for TISCO - Software Development - Relay co-ordination - Islanding scheme design Academia Industry Meet 2003, Electrical Engineering Department

Optimal Power Supply bidding by reinforcement learning in De- regulated power market Flexible AC Transmission System Devices in a transmission network - Development of Analytical Tools Relay Coordination Software Development Distribution System Automation Ongoing Sponsored R&D Projects in Power Systems Academia Industry Meet 2003, Electrical Engineering Department

Capabilities & Current Areas of Interest • Deregulation in Power Systems – Congestion Management –Optimal Bidding • Power System Dynamical Studies • Power System Stabilizer Tuning • Islanding and Power System Restoration •Trajectory Sensitivity Analysis • FACTS & HVDC •Modeling in Load Flow Analysis •Modeling in Transient Stability Analysis •Controller Design, optimal placement etc •Power System Relaying • Numerical Relaying •Relay Coordination with over-current and distance Relays •Out-of-Step Relaying • WAM and advances in Protection Academia Industry Meet 2003, Electrical Engineering Department

Capabilities Continued.. • Power System Software Development • Load Flow Analysis (C++) • Short Circuit Analysis (C++) • Relay Coordination for both over-current and distance relaying with meshed systems (C++) • Over-current Relay Digitizer ( MFC) •Transient Stability Analysis (Matlab & Simulink) • Power System Visualization • Graphical User Interface Development •Web based tools design • Seamless Integration of the analysis tools • Distributed Generation • Power Electronic Interface for non-conventional Energy Sources • Active & Reactive Power Management, load flow etc •Power Transformers • Stray Loss Evaluation using FEM technique • Design of Power Transformers Academia Industry Meet 2003, Electrical Engineering Department

Capabilities Continued.. • Power System Reliability • Condition Monitoring using Micro Electro Mechanical Systems (MEMS) • Array of sensors e.g. temperature, pressure, velocity, strain etc (increase reliability) • compact ( in mm) •Self checking & self calibration (important under demanding conditions) • Increase reliability Academia Industry Meet 2003, Electrical Engineering Department

Possible Areas of Interaction with Industry •System Planning • Distributed Generation •Focus on Grid Connection using power electronics & Planning Studies • Operation under restructured market • Impact on Distribution System Operation • Power System Analysis Software • Object Oriented Programming • Evolutionary • Relaying, WAM, Numerical relaying •Distribution System Planning •Condition Monitoring using MEMS • Continuous monitoring and prediction of failure • Tiny pressure, temperature, flow sensors. • Array of Sensors ( r out of n), linear response. •Self Monitoring and Calibration which is a difficult in demanding environments like Academia Industry Meet 2003, Electrical Engineering Department

Condition Monitoring ‘onset of failure’ Academia Industry Meet 2003, Electrical Engineering Department

Potential-Failure Interval Academia Industry Meet 2003, Electrical Engineering Department

Periodic -versus- Continuous condition monitoring Academia Industry Meet 2003, Electrical Engineering Department

Mode of Interaction • Consultancy & sponsored R&D projects for industry needs e.g., software, simulation studies etc • Indigenous • Strong Academic Support •Cost Effective • Short Term Training Courses (In-house, at IIT and by distance learning) • Deregulation, Distributed Generation, WAM, relay coordination, distribution system planning and operation etc • MS by research program for Industry Engineers in these thrust area ( at IITB and by Distance Learning) •Limited Course Work, Intensive Project Work in frontier areas • Win-Win Situation for All •Fellowships for M. Tech in PE+PS followed by optional recruitment of M. Tech Students Academia Industry Meet 2003, Electrical Engineering Department

Thank You