TSO-DSO Coordinated Reactive Power Dispatch for Smart Inverters with Multiple Control Modes Real-Time Implementation
This addresses voltage regulation and power curtailment issues for power grid operators, but it is incremental as it builds on existing smart inverter control methods.
The paper tackled the problem of coordinating reactive power dispatch between transmission and distribution system operators for smart inverters with multiple control modes, developing a sensitivity-aware MILP formulation and hierarchical optimization strategy. Results on IEEE test networks demonstrated feasibility and effectiveness in improving voltage regulation and minimizing power curtailment.
This paper presents TSO-DSO coordinated reactive power dispatch, with a focus on real-time implementation. A sensitivity-aware, mixed-integer linear programming (MILP) formulation is developed to model the IEEE 1547-compliant droop-based control modes Volt VAR (VV), Volt Watt (VW), and Watt VAR (WV) of smart inverters. The algorithm employs a hierarchical optimization strategy using Special Ordered Sets (SOS1) to enhance computational efficiency and supports limited measurement scenarios through Recursive Least Squares (RLS) estimation. The proposed method is tested on the IEEE 13-bus and 123-bus distribution networks, which are connected to a 9-bus transmission system. Results demonstrate the feasibility and effectiveness of the real-time dispatch framework in improving voltage regulation and minimizing power curtailment.