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Development of Power Flow with Distributed Generators and Reconfiguration for Restoration of Unbalanced Distribution SystemsKhushalani, Sarika 09 December 2006 (has links)
With the increasing interest in distribution automation, distribution power flow is important for applications like VAR planning, switching, state estimation and especially optimization. Typically, a distribution system originates at a substation and continues to a lower voltage for delivery to the customers. There are several tools for transmission system analysis. These tools include Newton Raphson, Gauss Seidel and fast decoupled techniques. These techniques however sometimes fail to converge when applied to distribution systems due to their higher resistance/reactance (R/X) ratio of the lines, making them ill conditioned. Distribution systems typically have a radial topological structure where the loads are not always constant power. With the increase in distributed generation (DG) there is a critical need to develop analysis tools to study the effect they will have on the distribution systems. Also, shipboard power systems are different from terrestrial distribution systems, as they are tightly coupled and have multiple generators. This dissertation focuses on developing a software program to perform the power flow analysis of terrestrial as well as shipboard power systems. Components are modeled considering the mutual coupling of cables and the tightly coupled nature of the ship systems. The algorithm is built and tested on I test cases. The distributed generator is modeled as both a PQ (constant power factor) and a PV (constant voltage) node. This dissertation also focuses on reconfiguration for restoration of unbalanced distribution systems. Reconfiguration is changing the status (OFF/ON) of switches and reconfiguration for restoration is changing the switch status to maximize the supply to loads that are left unsupplied after fault removal. Methods exist for restoration of distribution systems and can be categorized into heuristics, knowledge based, meta-heuristics and intelligent techniques. However, the application of these methods have not considered the unbalanced nature of distribution system operation with mutual coupling. The restoration in this dissertation is achieved using optimization with multiple objectives; that of maximizing the load giving priority to vital loads and minimizing the number of switch operations. Also a restoration scheme for shipboard power systems with an IPS and distributed generation has been developed. Restoration with possible islanding is demonstrated.
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MODELING PARAMETERIZED MOBILE ACTIONS IN A WIRELESS PERSONAL COMMUNICATION SERVICE (PCS) NETWORKPARK, SANG-EON 16 September 2002 (has links)
No description available.
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MODELING AND SIMULATION OF A MICROTURBINE GENERATOR TO BE COUPLED WITH A MOLTEN CARBONATE FUEL CELL FOR DISTRIBUTED GENERATIONJustice, Karleine M. 28 June 2007 (has links)
No description available.
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BROAD BANDWIDTH HIGH RESOLUTION ANALOG TO DIGITAL CONVERTERS: THEORY, ARCHITECTURE AND IMPLEMENTATIONRen, Saiyu, Dr. 31 March 2008 (has links)
No description available.
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REAL-TIME HILBERT TRANSFORM AND AUTOCORRELATION FOR DIGITAL WIDEBAND COMMUNICATION APPLICATIONSSrinivasa Murthy, Dilip 20 November 2008 (has links)
No description available.
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High Voltage DC Converter Systems Modeling, Simulation and AnalysisDALAL, MANISH A. 30 July 2009 (has links)
No description available.
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Flow Control of Compressible Dynamic Stall using Vortex Generator JetsNaigle, Shawn Christopher 12 September 2016 (has links)
No description available.
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Preliminary modeling of in-duct desulfurization using condensation aerosolsAdikesavalu, Ravichandran January 1997 (has links)
No description available.
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External characteristics and voltage regulation of a 3-phase induction generator under loadAintablian, Hrair January 1989 (has links)
No description available.
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Reduction of torsional oscillations in turbo-generator shafts with the use of a thyristor controlled resistor bankObiozor, Clarence Nwabunwanne January 1982 (has links)
No description available.
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