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In this paper, a notional Future Renewable Electric Energy Delivery and Management (FREEDM) system has been developed based on a real distribution feeder. The goal is to develop a digital testbed which can be used to show capabilities of this system, and to help the development of especially the new system components and the control schemes for this system. Two digital testbeds have been developed,...
The “Smart Grid” refers to various efforts to modernize the power grid through the application of intelligent devices. This paper describes current thinking by members of the Distribution System Analysis Subcommittee (DSA SC) on how distribution system analysis might evolve to support the Smart Grid. Various issues related to Smart Grid and distribution system analysis are identified. The essential...
With the increasing demand in PHEV safety, performance, etc., the PHEV applications require a battery model which can accurately reflect and predict the battery performance under different dynamic loads, environmental conditions, and battery conditions. An accurate battery model is the basis of the precise battery state (state of charge, state of health and state of function) estimation. And the precise...
According to the distributed substation protection configuration and the principle of fault-clearance, a new model of fault diagnosis based on Petri net is proposed in this paper. In Petri net diagnosis model, all kinds of fault have a specific token which make it easily and clearly to find the fault location and understand the sequence of the fault events. The diagnostic is implemented by solving...
This work presents an approach to parallelize the simulation of AC-Radial Shipboard Power Systems (SPSs) on multicore computers. Time domain simulations of SPSs are notoriously slow due to the order of SPSs and the presence of time-varying component models. A common approach to reduce simulation run-time is to partition power systems using Bergeron's travelling-wave model and to simulate the subsystems...
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