Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"EMTP"”.
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Real time simulations of EMTP results
… in the Electromagnetic Transients Program (EMTP). The EMTP is an off-line program which produces transients during a fault under different operating conditions and records the three phase voltage data at two computer relay locations. The EMTP simulation results are later played back in real …
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Time-domain based steady-state initialization for the EMTP
… in the electromagnetic transients program EMTP is based on a frequency-domain admittance method. This yields a simple, efficient solution for linear, lumped element networks. However, the basic algorithm cannot be easily extended to handle nonlinear and variable structure networks. A …
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Step by step eigenvalue analysis with EMTP discrete time solutions
… of the Electromagnetic Transients Program (EMTP) solution. This is the first time the connection between the EMTP nodal analysis solution and a corresponding state-space formulation is presented. Compared to conventional state space solutions, the nodal EMTP solution is computationally much …
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Current transformers transient response modelling using electromagnetic transient program (EMTP)
… using an electromagnetic Transient program (EMTP). Current transformers are considered eyes for power system protection. Behaviours of protection systems depend largely on information fed to them by instrument transformers. Ferromagnetic current transformers have for many years provided …
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Modeling of voltage source converter based HVDC transmission system in EMTP-RV
… at both ends of the HVDC link is developed using EMTP-RV. The VSC-HVDC transmission system model is developed using both direct control and vector control techniques. The direct control method is an approximate method in which the active power, AC voltages at both ends of HVDC link and DC link …
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Simulation of voltage source converter based shunt active filter in EMTP‐RV
… current. Proposed SAF is simulated using EMTP-RV simulation package under steady state and dynamic conditions and its effectiveness in mitigating harmonics is tested. The stability and response of the SAF is also tested satisfactorily under transient load and severe AC / DC fault …
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EMTP simulation of an active filter operating with weak AC distribution system
… the system, and a test system was modeled using EMTP. The objective of active filtering is to meet the harmonic and reactive load locally, and thus removing the harmonic content of source currents. The AF controller based on the on-line power computation scheme was modeled. Tracking control was …
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Protection system representation in the Electromagnetic Transients Program
… to the Electromagnetic Transients Program (EMTP). The EMTP is one of the most widely used programs for the simulation of transients in power systems. The EMTP contains models for almost every major power system component. A protection system consists of instrument transformers, relays, and …
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Transient analysis of six-phase synchronous machines
… for the simulation of such machines with the EMTP. The effect of the mutual leakage coupling between the two sets of three-phase stator windings are included in the development of a d-q equivalent circuit. The six-phase machine is constructed from a three-phase machine by splitting the stator …
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An improved bus protection technique with dissimilar current transformers
… both the Electromagnetic Transients Program (EMTP) and the Transient Network Analyzer (TNA) in the Power Systems Laboratory at Virginia Tech. Data from these models was used to test the relay software and hardware. Development of the digital bus relay software was done in FORTRAN. Because EMTP …
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Dynamic testing of loss of field protection
… EX2000 Digital Exciter. Through the use of EMTP, several different system disturbances are simulated. The EMTP files are then played back with the help of a real-time playback system. The signals from the playback system are then fed to the EX2000 and General Electric’s Digital Generator …
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Modeling of industrial power distribution circuits for voltage sag and fault analysis
… uses the Electromagnetic Transients Program (EMTP) to simulate sensitive electrical loads during voltage sags. The study begins by discussing the modeling procedure for induction motors based on manufacturer datasheets. It then investigates and develops a 24-pulse variable frequency drive …
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Hidden Failure in Protective Relays: Supervision and Control
… performed in Matlab. A power system model in EMTP provides inputs to the RSS model. Multiple faults are applied to the EMTP model, and the RSS is tested under each fault condition, and with a variety of relay hidden failures. For all tests performed, the simulation of the RSS successfully …
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Numerical instabilities in power system transient simulations
… out in the Electromagnetic Transients Program (EMTP). Several comparisons between the proposed and other methods are performed. Incases in which the analytical solution is not available, the comparison is made against the results of the TAGS package ("Transient Analysis of Control Systems") …
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Rol de profesores en la reproducción de estereotipos de género vinculados a masculinidades tradicionales en la educación media técnico profesional. El caso del Liceo Industrial Agustín Edwards Ross
… educación media técnico profesional (en adelante EMTP), instancia que se vería claramente marcada por las desigualdades de género y por las dinámicas que son propias de esta forma educativa. A partir de esto, surgió la interrogante respecto al rol que cumplen las y los profesores en la …
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Multiscale simulation of frequency dependent line models and network equivalents
… models is the straightforward implementation in EMTP-like programs such as PSCAD, EMTP-RV and ATP since they attain the same Norton-type structure. In addition, dynamic phasors allowed the unification of electromagnetic and electromechanical modeling into a single model. Both numerical …
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Impacts of superconducting magnetic energy storage unit on power system stability
… by the impedance model of the SMES unit and EMTP simulations. The impedance model of the SMES unit is established in this thesis for study purpose. It has been concluded that SMES unit can greatly improve the power system first-swing stability. Based on the theoretical analysis and simulation …
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Determination of Harmonics for Modeling Integration of Solar Generation to The Electric Grid
… used solar series and solar parallel models in EMTP (Electro Magnetic Transient Program) real time simulation software. When integrating solar generation models to the grid, due to DC to AC conversion and due to variation of solar energy intensity, the electric utility shall experience undesired …
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Modeling of AC circuit breakers in the electromagnetic transients program
… in the Electromagnetic Transients Program (EMTP). Various models for the arcing process were evaluated, and the modified Mayr equation was chosen for the model. Other equations were added to demonstrate the generality of the algorithm developed. Since the Electromagnetic Transients Program …
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Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested
… and an Electromagnetics Transients Program (EMTP) was used to study various mitigation techniques. A simple solution is presented for future installations that prevents the problem completely. A “next best” mitigation is presented for existing banks where reconfiguration would not be cost …
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