Jovan Krajacic, Ognjen Stanojev, Mario Schweizer et al. · Apr 29, 2026
Power electronic converters in both AC and DC microgrids are controlled using different approaches: AC grid-forming control enables integration of renewable energy sources, while DC droop control regulates decentralized DC-bus voltage. These control strategies share similarities but their similarities remain largely unexplored due to the distinct physical domains in which they operate. Theoretical analysis reveals isomorphism between AC grid-forming and DC I--V droop control in several aspects.
Why This Matters
This paper matters for power industry professionals as it explores a novel control approach that can unify AC and DC microgrid operations, potentially enhancing grid resilience, stability, and renewable energy integration in ISO operations, FERC filings, and capacity markets. The dualities between AC grid-forming and DC droop control may lead to more efficient and effective power-sharing mechanisms.
Lorenzo Zapparoli, Paul Fäth, Blazhe Gjorgiev et al. · Apr 29, 2026
A two-stage stochastic optimization framework is proposed for virtual power plants (VPPs) that integrates detailed device-level constraints and network limitations into a scheduling model. The model jointly optimizes bidding across energy and reserve markets, incorporating conditional value-at-risk to represent risk preferences, and dynamic network tariffs are used to unlock local flexibility. Risk aversion reduces profit volatility through closer alignment with physical dispatch, but strong tariff signals reduce expected profitability by up to 65%.
Why This Matters
This paper's risk-aware multi-market scheduling framework for Virtual Power Plants is crucial for grid operators and utility planners, as it enables them to harness local flexibility procurement mechanisms such as dynamic network tariffs to optimize energy market participation and reduce profit volatility in the face of operational and market uncertainties.
Xinyuan Jiang · Apr 28, 2026
A shifted passivity analysis of the single-machine infinite-bus system was presented, which showed local asymptotic stability of a synchronous steady state under specific conditions. The analysis used a port-Hamiltonian representation to construct a local shifted passivity condition and derived a dissipation inequality that leads to a sufficient stability condition in terms of various machine parameters. This provides a compact passivity-based stability certificate for the stationary-frame model, preserving the periodic structure of the rotor angle.
Why This Matters
This paper's analysis of the single-machine infinite-bus system has direct implications for grid operators and utility planners, as it provides a compact passivity-based stability certificate for the stationary-frame model, which can be used to assess the robustness of synchronous generators in power systems under various operating conditions, thereby informing ISO operations and FERC filings related to grid resilience and stability.
Juan Carlos Bravo-Rodríguez, Juan Carlos del-Pino-López, Francisco Casado-Machado · Apr 28, 2026
A new complex-vector power formulation for three-phase systems has been developed to explicitly represent cross-phase unbalance in phase asymmetry. This representation supplements the classical dot-product expression of complex power with a cross product of voltage and current phasors, making it possible to capture antisymmetric interphase relations. The formulation preserves the norm of apparent power under the Fortescue transformation and provides a compact phasor-based descriptor of unbalance that complements established apparent-power theories.
Why This Matters
This paper's formulation of complex-vector power and cross-phase unbalance is crucial for grid operators to accurately assess and mitigate three-phase system unbalances, which can impact power quality, stability, and reliability in modern power systems, particularly with increasing renewable integration and smart grid deployments.
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