Security-Constrained Unit Commitment with Corrective Network Reconfiguration: Enhanced Benders Decomposition Approach Article Swipe
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· 2019
· Open Access
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· OA: W2993403082
Security-constrained unit commitment (SCUC) model is used for day-ahead scheduling. However, current SCUC model uses a static network to deliver power and meet demand optimally. This does not fully utilize the transmission flexibility and efficiently address network congestion. A dynamic network can provide a lower optimal cost and alleviate network congestion. However, due to the computational complexity and the lack of effective algorithms, network reconfiguration has not been included in the SCUC model yet. This paper emphasizes the usage of corrective network reconfiguration (CNR) in response to a contingency while meeting realistic solve time for large-scale power system networks. An enhanced Benders decomposition approach is proposed to model and solve a co-optimized N-1 SCUC with CNR. The proposed method is tested and validated on the IEEE 24-bus system where it leads to overall cost saving and substantial congestion alleviation in post-contingency scenarios. The proposed method is also tested on the IEEE 73-bus system and Polish system to show the scalability.
