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 20 for “"Real-time Digital Simulator"”.
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Modeling of doubly-fed induction generators connected to distribution system based on eMEGASim® real-time digital simulator
… system based on the OPAL-RT’s eMEGASim® real-time digital simulator. The system in this research consists of a 9 MW wind farm, an average SimpowerSystems® DFIG wind turbine, connected to a 13.8 kV IEEE 14 bus distribution network. A Simulink model was designed and built using …
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Impact of plug in electric vehicle battery charging on a distribution system based on real-time digital simulator
… into the system. In this research, a 12.47 kV real distribution network has been modeled using real time digital simulator, using real data from a power distributor. The study presents four different scenarios of uncoordinated EVs integration for two different charging times (evening and night) …
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Real-time simulation of a doubly-fed induction generator based wind power system on eMEGASim® real-time digital simulator
… required tools and procedures needed to perform real-time simulation studies of Doubly-Fed Induction Generator (DFIG) based wind generation systems as basis for performing more practical tests of reliability and performance for both grid-connected and islanded wind generation systems. The author …
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Real-time modeling, simulation and analysis of a grid connected PV system with hardware-in-loop protection.
… studied. This thesis focuses on introducing a real-time simulation approach to the study of renewable energy resources that are grid connected. PV systems are the main focus of this thesis, highlighting some of the technical challenges involved in the integration of PV to the main power grid …
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Performance comparison between Dual-blinder and a Phasor-based Out of Step detection functions using hardware in the loop test
… against the Dual-Blinder method using a real-time digital simulator, a protective relay, and a Synchrophasor Vector Processor (SVP). The evaluation shows that the Phasor-Based function predicted the OOS before the Dual-Blinder OOS function when the power system was having damping …
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Adaptive underfrequency load shedding based on real time simulation
… implementation of adaptive UFLS based on real time simulation of IEEE39-bus system. The simulation tool used was OPAL-RT eMEGAsim real time digital simulator. To emulate the actual environment where the scheme could be used, a complete phasor network setup is established using actual …
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Investigation of a new method for synchronous generator loss of excitation protection
… on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper. Moreover, the algorithm was tested on both a 2-bus system and the IEEE 9-bus system to investigate the detection time, security and reliability of the proposed …
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Impact of high penetration of PV generation on power system transient stability and fault current; modeling for real-time studies
… fault levels. However, these studies were not in real time environment and deployed the inverter based resources IBRs in a distribution system or small-scale generation levels. This work studies the impact of high level PV injection on both the synchronous generators transient stability and grid’s …
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New techniques to improve power quality and evaluate stability in modern all-electric naval ship power systems
… system has been implemented in both regular digital simulation and real-time digital simulator for validation. In the second paper, a harmonic compensation algorithm for three-phase active rectifiers is proposed. Based on the theory of multiple reference frames, it provides fast and accurate …
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Attack resilient GPS based timing for phasor measurement units using multi-receiver direct time estimation
… on Global Positioning Systems (GPS) for precise time and synchronization. However, GPS civil signals are vulnerable to external attacks because of its low power and unencrypted signal structure. Therefore, there is a need for the development of attack resilient GPS time transfer techniques to …
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ACCELERATED ZONE-2 TRIP ALGORITHM FOR A NON-PILOT DISTANCE RELAY
Distance relays use time stepped protection zones for coordination purposes. The time delay introduced by zone-2 distance relays limits the use of these devices for extra high voltage (EHV) applications since the fast fault clearance requirement is not achieved. Transmission lines are normally …
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Multi-Agent System Based Energy Management Controller for Microgrids
… cause power interruption. This thesis proposes a real-time hybrid energy management controller for a microgrid that address these issues. The proposed hybrid controller architecture is developed based on Multi-Agent System (MAS) strategy. The proposed energy management technique is based on …
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Robust GPS-based timing for phasor measurement units based on single-receiver and multi-receiver position-information-aided vector tracking
… of the power grid. This technology produces time-stamped voltage and current phasor measurements, allowing measurements from any point in the power infrastructure to be synchronized. Widely regarded as one of the most vital devices in monitoring and control for the future of power systems, …
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Implementation of Solar Irradiance Forecasting Using Markov Switching Model and Energy Management System
… forecasting method was implemented in OPAL-RT real-time digital simulator using PV panels as sensors. For forecasting irradiance, the first four hours of irradiance data in the morning are required. These data were measured using the solar panels rather than pyranometers as the sensors . A case …
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The Modeling and Advanced Controller Design of Wind, PV and Battery Inverters
… by the intermittency of PV energy. A novel real-time experimental method for connecting physical PV panel and battery storage is proposed, and the proposed coordinated controller is tested in a Hardware in the Loop (HIL) experimental platform based on Real Time Digital Simulator (RTDS).;This …
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Data-Driven Voltage Control of DERs Integrated Distribution Grids Using Deep Reinforcement Learning
… based VVC approaches has become popular for real time control of the voltage. DRL can optimally control the reactive power set-point of the inverter to minimize the voltage fluctuation and avoid the voltage violation. This dissertation investigates the application of Deep Reinforcement …
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Transient stability assessment of hybrid distributed generation using computational intelligence approaches
… indicates that the power system is stressed. The real time/online monitoring and prediction of stability limit is needed to prevent future blackouts. In the last decade, Distributed Generators (DGs) among other technologies have received increasing attention. This is because DGs have the …
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A Local Measurement Based Protection Methodology for Initiating Controlled Islanding in Power Systems
… offline (Decision Tree) based that require time-consuming periodic offline simulation, or real-time based using a computationally intensive algorithm. The complexity in most of the real-time methods is due to the involved calculation of dynamic system equivalents after generator coherency …
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Power system dynamic modeling and synchrophasor measurements
Made available in DSpace on 2017-08-10T19:14:23Z (GMT). No. of bitstreams: 8 REINHARD-DISSERTATION-2017.pdf: 31360741 bytes, checksum: 9b34deed0eea6c39b38f600f182ab242 (MD5) FW_ Copyright Release Request #296.pdf: 107841 bytes, checksum: 226d766cf25320ed35c09ac701b428e3 (MD5) IEEE copyright …