Transmission-security constrained optimal dispatch scheduling using generalized Benders decomposition

For the secure power system operation, we introduce a decomposition technique that separates a transmission-security constrained dispatch scheduling problem into a master problem (MP) and several subproblems (SPs) using Benders decomposition. The MP solves a general optimal power flow (OPF) problem...

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Bibliographic Details
Main Authors: Koo-Hyung Chung, Kim, B.H., Jeong-Ho Lee, Tae-Kyoo Oh, Jin-Su Lee
Format: Conference Proceeding
Language:English
Subjects:
Asia
Electric variables control
Electricity supply industry
Equations
generalized Benders decomposition
interruptible load
Load flow
Load flow control
OPF
post-contingency corrective rescheduling
Power generation
Power systems
Power transmission lines
Supply and demand
Transmission-security constraints
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Summary:For the secure power system operation, we introduce a decomposition technique that separates a transmission-security constrained dispatch scheduling problem into a master problem (MP) and several subproblems (SPs) using Benders decomposition. The MP solves a general optimal power flow (OPF) problem while the SPs inspect the feasibility of OPF solution under respective transmission line contingencies. If a dispatch scheduling solution given by the MP violates transmission-security constraints, then additional constraints corresponding to the violations are imposed to the MP. Through this iterative process between the MP and SPs, we derive an optimal dispatch schedule incorporating the post-contingency corrective rescheduling. Numerical example demonstrates efficiency of the proposed approach.
ISSN:2160-8636
2160-8644
DOI:10.1109/TD-ASIA.2009.5356864