Two Week Main Workshop (STTP) on Electric Power System
Organized by IIT Kharagpur
10th to 15th July 2017
A Two - Week ISTE Workshop (STTP) on “Electric Power System” was conducted at Dronacharya College of Engineering, Greater Noida from 10th to 15th July 2017. The workshop was organised by Indian Institute of Technology, Kharagpur under the National Mission on Education through ICT (NMEICT), Government of India at various Remote Centres. Dronacharya College of Engineering, Greater Noida was one of the prominent remote centres of Delhi NCR region. The objective of the workshop was to equip the faculty of engineering colleges with the knowledge of Power System.
4260 participants had registered for the workshop countrywide. 29 participants including DGI, Greater Noida, AIMT, IEC, United, TERI, Amity attended the workshop at Dronacharya Group of Institutions, Greater Noida.
Day 1: 10th July 2017
The workshop was inaugurated on 10th July 2017 by Prof. Raja Datta (Principal Investigator, T10KT, IIT Kharagpur)
Following distinguished guests were present during the inauguration:
- Prof. P. K. Das, Dean, Continuing Education, IIT Kharagpur
- Prof. P. K. Biswas, Co-Principal Investigator, IIT Kharagpur
- Prof. N. K. Kishore, Course Coordinator, IIT Kharagpur
Prof. Dutta welcomed all the participants present at various remote centres and emphasized on the importance of core subject like Power System.
Prof. N. K. Kishore, conducted an introductory session. He gave an overview of the course and spoke about the history and current trends of Electrical Engineering.
Prof. Bandyopadhyay took a session on “Power System Steady State Operation”. He discussed about Power Quality, Power Quantity, Power System States, Transmission lines, compensation, and benefit of FACTS technology. He also discussed Schedule Generator Powers and other controllable parameters to meet the economic objective of Power System.
Later, Prof. Soman delivered a lecture on “Power flow analysis and power transfer capability”. He discussed the study of Power flow and made participant understand the calculation of power flow with an example. Further in his lecture, he discussed about the INDIAN POWER SYSTEM, and explained about transmission line (66kV and above): Installed capacity (330 GW) and Peak Demand. Prof. Soman ended the session with an explanation of Reliability Margins.
The last session of the first day was presented by Prof. Bandopadhyay on “Symmetrical Faults”. During this session, he discussed the various types of faults that occur in transmission lines and its method to detect the faults.
Day 2: 11th July 2017
Prof. Gautam Bandyopadhyay discussed “symmetrical components” and explained its basics. He also explained unsymmetrical fault, phase shift of symmetrical components in star - transformer, phase shift of voltage phasor, calculation of power using symmetrical components, complex power in terms of phase. He took numerical examples of NPTEL lectures (IIT Kanpur) and explained how voltage drop occurs in the transmission network due to flow of unbalance current. At the end of the session, he explained about the protection against unbalanced current, effect of unbalanced voltage at single phasing, and sequence reactance of system component.
Prof. S. A. Soman started the second session at 11:15 AM and explained the basics of 3-∅ transformers, different type of phasors for the star and delta connected transformer, and various faults that occur in the transformers.
3rd and 4th session of the day was delivered by Prof. Gautam Bandyopadhyay on “Unsymmetrical Faults”. During this session, he discussed the various faults in transmission lines, He explained the various methods to detect the line faults, Faults on unloaded generator, line faults between different phases, line faults with two different phase short circuited and grounded. He also explained how an unsymmetrical fault can be calculated for loaded generator. Finally, he ended the lecture by explaining several numerical problems.
Day 3: 12th July 2017
Prof. S. A. Soman described the background of transmission system. He explained, why Phase Shifting Transformer (PST) is needed in a transmission line?
Prof. G. Bandyopadhyay conducted a session on “Power System Protection”. He discussed the classification of relays (such as magnitude relay, directional relay, ratio relay, differential relay pilot relay and travelling wave based relay) based on logical design and hardware, requirement of high speed relaying, differential protection, and importance of line protection.
The third session of the day was presented by, Prof. S A Soman on “Phase shifting transformer”. During this session, he discussed the construction and principle of PST.
Prof. Gautam Bandyopadhyay delivered a lecture on “Advance Power System Protection”. He discussed Pilot Protection with a schematic diagram of phase comparison carrier current protection.
Day 4: 13th July 2017
Prof. N. K. Kishore, started the first session of the 4th day with “Motivation Exercises”. He explained the uses of 3-phase and poly - phase, standard voltages like 132KV/220KV. While conducting a session on Product Development Cycle, He explained about steady state of art, break into component and analysis, defined requirement and synthesis, developed prototype and test in laboratories.
Prof. N.K. Kishore delivered a lecture on “Application of software for Power System Analysis”. During this session, he introduced Power World Simulator Software and explained how to use the software, and different tools being used to determine the power flow. He also, described how to design a problem of power system in power world simulator software. All the participants designed the same problem and completed the simulation.
Prof. N. K. Kishore took a power system problem and simulated it on Power World simulator software.
Mr. Narayanan R, Business Analyst, TCS, Chennai delivered a lecture during 4th session on “Application of ICT in Power System Operation”. He discussed about the interaction plan, and traditional utility model; Evolution of grid model with customer engagement, DER penetration and digital technology; Architecture, OT-IT-ET system Integration; Tools for implementation, and process approach. He further explained about different technologies such as, IT (Information Technologies), OT (Operation Technologies) and ET (Energy Technologies). He also, discussed various challenges in OT Controllability; OT Integration; and Common Integration Model (CIM).
Day 5: 14th July 2017
Participants were given a Quiz to test their learning from the workshop. It consisted of 30 objective questions of 3 marks each.
Prof. N K Kishore conducted the 2nd session of the day on “Overview of a Laboratory Course on Power Systems”. In this session, he discussed how laboratory courses are supplements to theory courses and must be run parallel. He also discussed the distribution of labs in a semester and the safety instructions to be kept in mind. He explained about various sources of energy, sub stations, protection and supplements in power systems.
The 3rd and 4th session of the day was presented by Prof. S. A. Soman on “Introduction to Power Exchange”. During his session, he talked about various power exchange products viz. day ahead market, term ahead market and renewable energy certificates trading. He then moved on to discuss about bid order structures in market i.e. block bid, linked block bid and flexible hourly bid. He explained the market equilibrium and social welfare via various graphical visualizations and hourly bid matching through Lagrangian functions.
Prof. S. A. Soman continued his lecture on “Introduction to Power Exchange” during the 4th session. He then explained the need of block bids with another example and its problems. The participants were educated about the enumeration and heuristic solution approach and MILP approach.
Day 6: 15th July 2017
Prof. N. K. Kishore delivered a lecture on “Renewable Energy Conversion Transmission and Storage”. He discussed how to solve any problem; break into components first, representation (Mathematical, Circuit representation, EM), Analysis (Performance, Efficiency), Synthesis (Inverse), Design and finally Prototype. He also discussed some National Energy Policies (Niti Ayog), Security of energy and some Renewable Energy resources.
Prof. Kannan M Moudgalya, Professor, Chemical Engineering Department, IIT Bombay started the second session at 11:15 AM on “SciLab”. He started the session by introducing the SciLab and uses of Open Source Software. He also discussed the benefits of SciLab which is freely available.
Valedictory session started at 2:00 PM on 15th July 2017. During valedictory, following distinguished guests were present.
- Prof. Raja Datta, Principal Investigator, IIT Kharagpur
- Prof. Pranab Kumar Dutta, HOD, Department of Electrical Engineering, IIT Kharagpur
- Prof. N. K. Kishore, IIT Kharagpur
- Prof. S. A. Soman, IIT Bombay
- Prof. Shailendra Kumar Varshney, Associate Professor, Dept. of Electronics & Electrical Communication Engineering, IIT Kharagpur
They congratulated all the participants and the team of T10KT for their successful conduction of the workshop. He also sought feedback for the workshop from the participants.
At Dronacharya Group of Institutions, Greater Noida, Prof. (Dr.) Ashish Soti, Director, DGI, Greater Noida presented the Provisional Certificate to the participants of the workshop and thanked them for sparing their precious time for the program and hoped that the workshop had been very fruitful for them. He urged the participants to implement the teaching in their classroom.