Unit Commitment in Restructured Power systems

Gangavarapu, R (2014) Unit Commitment in Restructured Power systems. Masters thesis, Indian Institute of Technology, Hyderabad.

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Abstract

As the power industry across the world is experiencing a radical change by separation of transmission from generation activities, creation of competition by bidding or through provision of bilateral transactions in spot markets, there is need for the unit commitment in power industry with generation biddings, load biddings and bilateral transaction biddings. In general Unit Commitment can be formulated as non-linear, large scale, mixed integer combinatorial optimization problem. For Better optimized result with quick response, piece-wise linearization of cost function and slack terms with high penalty factor are incorporated in unit commitment along with all generator, system, operator and line constraints. In order to get convergence solution with UC, OPF is performed with fixed unit status from unit commitment solution by taking account of generator ramp rates. Unit Commitment with 3-part generator bidding, load bidding and bilateral transaction with both elastic and inelastic parts is performed which is suitable for the recent power industry.

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