Optimized generation capacity expansion using a further improved screening curve method

•A further improved screening curve method for generation planning is proposed.•Tradeoff between restarting generators and operating at minimum output is introduced.•An iterative process is involved in this improvement.•Algorithms for reducing the computational effort are introduced.•Three cases are...

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Bibliographic Details
Published in:Electric power systems research 2015-07, Vol.124, p.47-54
Main Authors: Zhang, Tong, Baldick, Ross, Deetjen, Thomas
Format: Article
Language:English
Subjects:
Generation capacity expansion
Generation cost
Heat rate
Renewable energy
Screening curve method
Thermal cycling operation
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Summary:•A further improved screening curve method for generation planning is proposed.•Tradeoff between restarting generators and operating at minimum output is introduced.•An iterative process is involved in this improvement.•Algorithms for reducing the computational effort are introduced.•Three cases are computed to compare the proposed method with previous works. As more renewable resources are integrated into the grid, non-dispatchable renewable energy and more detailed considerations of short-term operation should be represented in generation planning models. In this paper, the screening curve method is utilized to model these details for generation capacity expansion. In addition to previous studies, we further develop the screening curve method with more detailed consideration of thermal cycling. Computational results performed on a real system case are compared and analyzed.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2015.02.017