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 15 of 15 for “"Grid code"”.
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Power System Grid Planning with Distributed Generation
… flow creates complexity in the power system grid planning due to the conversion of the power system from a passive network to an active network. Introduction of bi-directional power flow on the power system can, among other benefits reduce local power demand which opens opportunities for …
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Reliable power system operation plan - steady state contingency analysis
To ensure that Sabah Grid transmission system is planned and operated safely, economically and reliably, steady state contingency analysis must be performed. This analysis is performed to ensure that the system meets all requirements and Grid Code standards under normal operations and given a …
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Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality
… based wind turbines on power quality of the grid. PMSGs are attractive due to the absence of a gearbox in the drive-train, which results in lower maintenance costs and higher reliability. Moreover, the advancements in power electronics have facilitated PMSGs to generate optimal power at …
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Critical point study in the Sabah power grid for cascading failure blackouts
Sabah System Grid is made up of 66kV, 132kV and 275kV which link up all major towns in Sabah and Federal Territory of Labuan. As the Grid Owner, SESB is responsible for the development, management and operation of the Sabah System Grid. All activities pertaining to the System Grid are bounded by …
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Multi-dimensional simulations of bow shocks of massive, high-velocity runaway stars
… stars. We use PLUTO, a magneto-hydrodynamics grid code, to simulate these bow shocks, performing hydrodynamic simulations in 2- and 3-dimensions, while including thermal conduction and detailed radiative cooling/heating. Extensive 3D freely expanding stellar wind models testing the numerics in …
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Energy storage systems for wave energy converters and microgrids
… examined to the limits specified in the Irish grid code for wind turbines. These applications are investigated with a more complete model of the system that includes a detailed back-to-back converter coupling a permanent magnet synchronous generator to the grid. Supercapacitors have been …
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High Power High Frequency 3-level NPC Power Conversion System
… energy and the emerging concept of micro-grid system raises challenges to the high power conversion techniques. Multilevel converter plays the key role in such applications and is studied in detail in the dissertation. The topologies and modulation techniques for multilevel converter are …
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Towards reliable organisms: fault-tolerance in unconventional models of computation
… to analog noise. Using the biologically-inspired grid code, we show that fault-tolerant neural network-based computation can be achieved. Then, we envision quantum computation composed of subroutines---rather than gates---developing a method for the error correction of noisy quantum subroutines …
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Grid current control methods for MV wind energy conversion systems
… reduce the cost of energy. Additionally, the grid converter is the only way to connect the renewable power generation to the power grid. Grid converter control strategies considering normal and abnormal operation have been one of most concerned points for renewable energy integration. Based on …
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Design and operation of Low Frequency AC (LFAC) transmission system for connecting offshore wind farms
… for integrating the wind power to the onshore grid. The technical and economic efficiency of each approach is evaluated on a case-by-case basis and is mainly dependent on the Offshore Wind Power Plant (OWPP) capacity and its distance from shore, with HVAC TS being the most common solution for …
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Power quality enhancement in electricity networks using grid-connected solar and wind based DGs
… constitute 2 200 MW and 960 MW, respectively. Grid integration of solar and wind-based intermittent DGs may however pose negative impacts on the quality of power supplied by the utility network. Some of the detrimental impacts of DG include voltage fluctuations, flicker, etc. which are in …
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Vliv integrace větrných elektráren do ES
Tato bakalářská práce je rozdělena do čtyř hlavních bodů. První bod obsahuje popis vzniku větru, princip a rozdělení větrných motorů a popis větrné elektrárny jako celku. Druhá část se zabývá rozborem vlivů větrné elektrárny na elektrizační soustavu a analyzuje problémy vznikající v sítích s velkým …
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Creating additional network capacity on constrained medium voltage networks utilizing distributed generation (specifically PV technology)
… to assist MV networks in operating within their grid code regulations. The research then develops a coded method to be utilized for network analysis in DIgSILENT Powerfactory supported by a data analytic interface in Microsoft Excel. This analysis optimally places PV to the network to maximize …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… applying for direct connection to the national grid, having export capacities ranging from 1 MW to 100 MW. This increased the number of Independent Power Producers (IPPs) seeking connection to the South African electricity transmission system (TS) or distribution system (DS) – which, as a …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… applying for direct connection to the national grid, having export capacities ranging from 1 MW to 100 MW. This increased the number of Independent Power Producers (IPPs) seeking connection to the South African electricity transmission system (TS) or distribution system (DS) – which, as a …