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1. Improving Accuracy and Efficiency of Start-Up Cost Formulations in MIP Unit Commitment by Modeling Power Plant Temperatures.

Author

Silbernagl, Matthias, Huber, Matthias, and Brandenberg, Rene

Subjects
*RENEWABLE energy source research, *MIXED integer linear programming, *TEMPERATURE, *POWER plants, *ELECTRIC power
Abstract

This paper presents an improved mixed-integer model for the thermal unit commitment problem. By introducing new variables for the temperature of each thermal unit, the off-time-dependent start-up costs are modeled accurately and with a lower integrality gap than state-of-the-art formulations. This new approach significantly improves computational efficiency compared to existing formulations, even if they only model a rough approximation of the start-up costs. Our findings were validated on real-world test cases using CPLEX. [ABSTRACT FROM PUBLISHER]

Published
2016
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