The Department of Electrical and Electronics, KCG College of Technology organized an IET sponsored ONE-DAY NATIONAL LEVEL WORKSHOP ON “FUTURE OF POWER PROTECTION – EMERGING CHALLENGES” on July 7th, 2017. The inaugural function commenced at 9.30 am in Mirza Seminar Theatre. The meeting was presided by Dr.G.Prabhakaran – Principal, Dr.P.DeivaSundari – Head of the Department/EEE, Dr.G.Sambandan – Advisor/Electrical Sciences. The workshop formally began with an invocation and the invited guests were welcomed by Head of the Department/EEE. The Principal and the Advisor gave the felicitation address. Around 196 participants registered for the programme. The Guest speakers were from industries like Easun ReyRolle Pvt Ltd, ABB, Megger, and a Professor from VIT, Vellore. The participants from other institutions also attended the workshop along with our final year and pre-final year students. The programme was inaugurated by the Chief Guest, Dr L R Rajagopal, Chief Executive Officer (CEO), Signals and Systems Private Limited, Chennai. He shared his views regarding concepts on power protection and its importance in future. He also enlightened the gathering with information regarding HVDC systems, condition monitoring and asset management system, and overview of electric power scenario in Indian power sector.
Session 1
Mr. G. Mahendiran, Head Engineering (Testing & Commissioning), Easun Reyrolle Limited (ERL), Chennai.
He introduced us to the concepts of emerging innovative technology in EHVAC systems and its classifications. Also he delivered, components of EHVAC system and zones of protection like single and multifunction protection such as differential protection, impedance protection, busbar protection, reactor protection etc. He made us aware of modern power transmission systems and its ongoing research in harmonics, fault currents and wave trapping in power system protection. However, whenever fault develops in any or combination of equipment of generation, transmission, distribution and utilization, there is sudden disturbance of these forces resulting in an inrush of current and voltages build up in microseconds which may result in fire in generators and damage of many power plants equipment. He stressed on the importance of protection against phase-to-phase fault and phase to earth faults. He created an awareness for electrical engineers and also who work in the field of power generation, transmission, distribution, protection, relay coordination and planning of new and/or expansion of existing system etc. His experience also educated the students by providing both practical and theoretical exposure.
Session II
Dr. Mahendra V Chilukuri, Professor, Power System and Smart Grid, School of Electrical Engineering, VIT University, Vellore.
He spoke on evolution of protection relays and High Voltage Direct Current (HVDC) transmission & protection. He explained about power electronics converter and inverter, harmonic mitigation, DC link voltage, thyristor switches etc. He also pointed out the communication protocols used in substation/power networks such as IEC 60870 – 5 -101, IEC 60870 – 5 -102, IEC 60870 – 5 -103, IEC 60870 – 5 -104, IEEE C37.118 – PMU/synchrophasor measurements for power systems. He also gave an insight about synchronized phasor (synchrophasor) measurements for power systems and requirements for compliance with the standard under both steady-state and dynamic conditions.
He explained the various types of relay and its evolution in power engineering. He gave a brief role of electromechanical relay, static relay and numerical relay. He enlightened the future goals in online monitoring (Data monitoring, storage and visualization) and Intelligent diagnostic system (DGA based diagnostic, AI technique, partial discharge monitoring) based condition monitoring. He pointed out the recent electricity scenario, demand, generation and applications in Indian power sector.
Session III
Mr. K. R. Sasikumar, Technology Lead Engineer, ABB, Chennai.
He introduced the development history of HVDC for power transmission purpose and commercial HVDC links in India. He gave an overview of the methodology and different opportunities for reducing loss while transmitting power from the power stations. He explained the various fault clearance mechanisms for faults occurring in the converter & inverter stations. He also demonstrated various case study on HVDC link, voltage stability and reliability of power. He also stressed that severe impact will be brought to hybrid AC/DC system when three-phase faults occur and single-phase breaker refuse to act, especially when disturbances are near DC converter. The session was very interactive.
Session IV
Mr. K. N. K. Srinivas, Megger (India) Pvt Ltd, Chennai.
He explained the concepts of Diagnostic Insulation Testing / Protection Relay Testing. Also he gave the information related to electronic design and household wiring for generators and power transmission systems and all different kinds of insulation safe minimum value. Various types of DC diagnostic insulation testing such as S1-1068 10 kV insulation resistance testers, 5 kV insulation resistance testers were also demonstrated by his team during the session. The protection system tools and relay software were also demonstrated.
Formal closure
The programme concluded with feedback from the participants and certificate distribution. We would like to thank the Institution of Engineering Technology (IET) for sponsoring this one day national level workshop.