WSEAS Transactions on Power Systems
Print ISSN: 1790-5060, E-ISSN: 2224-350X
Volume 9, 2014
Influx of Random Variables in the Unit Commitment Problem
Authors: ,
Abstract: With rapid strides in the realm of power restructuring, the Unit commitment problem (UCP) has transformed itself into a dysfunctional amalgam of several variables relating to power system operation; commercial ones of the system operators and stochastic parameters corresponding to non-deterministic behavior of power equipment and accessories. The older set of UCP formulations has undergone sea changes in scope and enormity. Present ones have expanded to include indeterminate real life situations that require several probability measures. Corresponding solution techniques that address these amplified functions also need to be fitter, robust and versatile to generate acceptable and realistic optimal solutions. While there are classes of solutions galore, the state-space method is amenable to the inclusion of stochastic variables for generating effective UCP solutions. This paper attempts to graft random processes into the state space analysis of a generating block using a suitable selective state merger method employing appropriate transition rates. This helps to arrive at a reliability index that can vet a good UCP solution.
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Keywords: Unit Commitment, Reliability constraints, State space, State transition, State merger, Generator scheduling, Markov chains, Ergodic theorem
Pages: 196-207
WSEAS Transactions on Power Systems, ISSN / E-ISSN: 1790-5060 / 2224-350X, Volume 9, 2014, Art. #20