Quantum mechanics

Control (management)

Mathematics education

Engineering

Ecology

Biology

Multi stage

Operating system

Constraint (computer-aided design)

Economics

Power (physics)

Set (abstract data type)

Computer science

Mathematical optimization

Acoustics

Decomposition

Paleontology

Mechanical engineering

Physics

Operations research

Mathematics

Unit (ring theory)

Electric power system

Industrial engineering

Stage (stratigraphy)

Artificial intelligence

Schedule

Programming language

Control theory (sociology)

Power system simulation

Economic dispatch

Period (music)

IEEE Transactions on Power Systems

To ensure the feasibility of a unit commitment (UC) schedule under uncertainty, most existing two-stage robust UC methods formulate their second-stage problems as a multi-period economic dispatch (ED) problem with dynamic constraints, which does not properly model real-time ED where dynamic constraints relevant to the future operation are not certifiable. This paper proposes a two-stage robust UC method where a UC schedule and a box in a feasible operation set of each power source as its new feasible operation set are determined. As the multi-period ED problem with the refined feasible set at the second stage has no dynamic constraint, it is identical to a series of single-period ED problems. By modeling real-time ED as the single-period ED problems whose solutions depend only on uncertainties at the corresponding timeslots, the proposed method presents a practical framework of non-anticipative robust UC. Simulation results with a 118-bus system demonstrate the performance of the proposed method.

Box-Based Temporal Decomposition of Multi-Period Economic Dispatch for Two-Stage Robust Unit Commitment