A Linearized Power Flow Model for Optimization in Unbalanced Distribution Systems

Understand

Optimal Power Flow (OPF) is an important tool used to coordinate assets in electric power systems to ensure customer voltages are within pre-defined tolerances and to improve distribution system operations.

• While convex relaxations of Optimal Power Flow (OPF) problems have been proposed for both balanced and unbalanced networks, these approaches do not provide universal convexity guarantees and scale inefficiently as network size and the number of constraints increase.
• To address these issues, we have recently explored a novel linearized OPF formulation for unbalanced distribution systems.
• Our approach is made possible in part by approximating the ratio of voltages across phases throughout the network.