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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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