Research questionHow can distribution grids solve multiphase AC-OPF quickly and feasibly as loads, DERs, and switch topologies change?Distribution operators must repeatedly optimize nonlinear multiphase power flows as demand, distributed resources, and feeder configurations change. These repeated solves become costly at utility scale while infeasible decisions can violate grid constraints. Latest papersRecent research connected to this question, newest first.Scalable Self-Supervised Learning for Multiphase AC-OPF in Distribution Systems with Topology ReconfigurationThe source studies a self-supervised learning framework that trains from AC-OPF objectives and constraints without labeled optimal solutions, using a differentiable fixed-point power-flow solver and feasibility repair at inference. It evaluates IEEE feeders ranging from 13 to 8,500 nodes under load, DER, and topology changes, reporting speed, optimality gaps, constraint violations, and robustness to distribution shifts.research paper · Sep 2, 2026