Coordinated Optimal Power Quality Management in Distribution Systems Using The Residual Capacity of Community IBRs
For distribution system operators, it addresses the problem of underutilized inverter capacity for voltage unbalance mitigation, but the contribution is incremental.
This paper proposes a coordinated optimization model to mitigate voltage unbalance in distribution systems by using the residual capacity of community inverter-based resources, validated through simulations and experiments.
This letter proposes a network-wide coordinated optimization model to mitigate voltage unbalance (VU) by unleashing the remaining capacity of community inverter-based resources (IBRs). Existing single-sequence strategies ignore coupled capacity constraints and cause idle headroom. Meanwhile, they fail to harness the collective governance capabilities of community IBRs. To solve this discrepancy and exploit the unused potential, we developed a sequence-domain network model in dual commonly shared synchronous reference frames. Strict phase current and apparent power limits are formulated and convexified via polyhedral approximations. A quadratic objective function flexibly balances sequence capacity allocation. Simulation and experimental results validate the effectiveness of the proposed strategy.