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Power systems on naval vessels and airplanes are good examples of self-contained power systems. These types of systems are useful for testing reconfiguration, particularly ones that might be implemented continuously, not just under compromised conditions. Determining the best operating condition in real time is challenging, since it discourages stochastic approaches. A fixed grid representation of the dynamic loads is recommended, employing a phasor algorithm to update the load impedances. A new subspace approach for solving the reconfiguration is presented and compared to branch and bound algorithms. Reconfiguration is studied for a test system with 16 million switch options. Also discussed is how this information can be used in the design of the power grid a priori. Index Terms--Integer optimization, phase analysis, stochastic.

Power systems on naval vessels and airplanes are good examples of self-contained power systems. State of the art LEM modules and voltage sensors provide real time current and voltage data. This paper shows how that information can be used to construct dynamic equivalent impedance representations of the system discretized into key trunk lines. Error analysis indicates that the algorithm performing this representation can be updated in one fifth of a cycle if the signal to noise data ratio is 5% or less. The magnitude of the equivalent impedance is sufficient to determine when fault control on either end of the trunk line is required. These same equivalent impedances can be used to determine the best switch configuration to maximize load power while minimizing transmission loss subject to line load capability. The accuracy of the equivalent impedance approach is assessed for transients with active and passive loads. Index Terms--Fault detection, phase analysis, reconfiguration, transient.