Sh. N. Nallarasan has been the Deputy General Manager of Power System Operation Corporation
Limited (A Government of India Enterprise) since August 2012. He served System Operation at
various regional load despatch centres (RLDCs) as well as national load despatch centre (NLDC) at
Power System Operation Corporation Limited (POSOCO) and has more than 30 years of wide
experience in power sector. He has experience of managing power system operation under changing
scenario and upgraded technological environment. He started his illustrious career when he joined
Central Electricity Authority (CEA) through Central Power Engineering Services. He has worked
extensively in synchronisation of state grids to regional grids and was instrumental in formation of
integrated national grid of India. He has specialization in Power System Operation, Planning, Demand
forecasting, Restoration and handling load generation balance. Other areas of expertise of Mr.
Nallarasan include Electricity Markets including Power Exchanges, Open Access in Inter-State
Transmission System, and Regulatory affairs besides expertise in Load Despatch Technology. He
has worked closely on implementation of Reserve Regulation Ancillary Services (RRAS) and pilot
project phase of Automatic Generation Control (AGC). Prior to joining PowerGrid Corporation of India
Ltd. in January 1995, he worked in the CEA. He Post-graduated with a Master of Engineering Degree
in Electrical Engineering from the College of Engineering, Guindy, Anna University, Chennai.
*Role of System Operators in Indian Power Sector: Vital link’ between the
administrators, planners & regulators on one end and physical system and market
players on the other end
* Latest available data on Indian power system, Power exchange and inter-national connections
* Harnessing diversity of weather present in Indian system and managing loads on the basis of that
* Steep rise in integration of renewables in the Indian grid
* Improved power system frequency in India
* Evolution of power markets and its different products
* Ancillary Services – Security, Reliability and Economy
* Visualisation Displays Developed at NLDC: contour maps
* Balancing of generation: renewable, pump storage based etc.
* Wide Area Measurement System- Phasor Measurement Units (PMU): from pilot project to URTDSM project
2 : Recent trends and advances in power system operation of Indian grid
Sh. N. Nallarasan,
DGM, NLDC, POSOCO.
1 : Conventional and Hybrid Application of Power System Simulators – Off-line, On-line and
Dr. Om Nayak,
President, Nayak Corporation, United States.
Dr. Om Nayak is the Managing Director of Nayak Power Systems here in India and President of
Nayak Corporation in the United States. He has extensive hands-on experience with RTDS and
PSCAD as a developer, user and promoter. He is very passionate about these tools for the benefit
they bring in understanding complex power system phenomena, and in particular for students of
Dr. Nayak obtained his Bachelor degree in Electrical Engineering from Mysore University and M.Sc. and Ph.D. degrees from University of Manitoba, Canada, specializing in power systems. His previous industry experience includes his work at Bosch in Bangalore, Siemens in Chennai and Manitoba HVDC Research Centre in Winnipeg, Canada. He is a Registered Professional Engineer in the Province of Manitoba, Canada and a Senior Member of the IEEE and supporter of IEEE Scholarship Plus initiative.
The evolving complexity of the modern power system over the century necessitated the invention of set of analytical tools to help design and analyze the power system. As a result, sophisticate class of power flow analysis tools, transient stability analysis tools and electro-magnetic transient analysis tools being used today have evolved. Present day power system is being called the smart grid, cyber-physical power system and micro-grid. They consist of distributed renewable energy sources in addition to the bulk sources. This increased sophistication, speed and wider reach of controls, and complexity of the primary system and its controllers have necessitated the evolution of a modern test environment, popularly called real-time digital simulator. The same advances in digital technology which have enabled the sophistication of the system control devices have enabled the design of real-time digital power system simulators. This presentation briefly discusses the conventional applications of three independent tools – one in each class, a hybrid-simulator and then share the vision of a future simulation environment.
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