Abstract
Unit Commitment (UC) is a computationally intensive problem, which has been solved sufficiently well for day ahead scheduling and single scenario simulations. However, the introduction of renewable energy sources and storage exposes new challenges in computation time due to the need for large-scale multi-scenario modeling while preserving inter-temporal constraints. To address this, we introduce a novel approach with adaptive time resolution that increases simulation speed and preserves accuracy. We reduce the size of the problem by grouping successive time intervals with similar net demand levels, forming a new longer interval. In comparison with the conventional UC solutions, the proposed approach is computationally more efficient, as it avoids repeated optimization for similar intervals. We analyze the quality of the solutions using the 6-bus, and IEEE 118-bus test systems as the two case-studies. The numerical results demonstrate that high quality solutions can be obtained with significant gains in computational speed, especially for the more difficult IEEE 118-bus case which is 115 times faster with a maximum error of less than ±1%.
Original language | English |
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Title of host publication | 2018 IEEE Power & Energy Society General Meeting (PESGM 2018) |
Place of Publication | Piscataway NJ USA |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 3406-3410 |
Number of pages | 5 |
ISBN (Electronic) | 9781538677032, 9781538677025 |
ISBN (Print) | 9781538677049 |
DOIs | |
Publication status | Published - 2018 |
Event | IEEE Power and Energy Society General Meeting 2018 - Portland, United States of America Duration: 5 Aug 2018 → 10 Aug 2018 https://www.pes-gm.org/2018/ https://ieeexplore.ieee.org/xpl/conhome/8540807/proceeding (Proceedings) |
Publication series
Name | IEEE Power and Energy Society General Meeting |
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Publisher | IEEE, Institute of Electrical and Electronics Engineers |
ISSN (Print) | 1944-9925 |
ISSN (Electronic) | 1944-9933 |
Conference
Conference | IEEE Power and Energy Society General Meeting 2018 |
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Abbreviated title | PES-GM 2018 |
Country/Territory | United States of America |
City | Portland |
Period | 5/08/18 → 10/08/18 |
Internet address |