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 13 of 13 for “"System Inertia"”.
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Changes to system inertia and the impact on frequency response requirements
… power landscape and associated reduction of inertia in the power system,introduces concerns about the assurance of frequency stability and the adequacy ofdynamic frequency responses at low inertia. In islanded power systems, like those ofIreland and Great Britain (GB), understanding the …
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A novel zonal adaptive DG anti-islanding protection scheme to enhance future system stability using real-time inertia estimates
Emerging power system designs are driven towards supporting the diversity of generation supply through increased flexibility and progressive employment of renewable resources, in order to fulfil sustainable and low carbon energy development strategies. The resulting impact on system response, …
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Position Control Comparison of Equilibrated and Mass Counterweight Systems
In robotic systems, reduction of inertia is a key concern. One way to reduce the system inertia is to replace counterbalance masses with an equilibrator, which is a force element like a spring. Although there has been much research on equilibrated mechanisms, there has not much research on the …
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Modeling and integration of smart control strategies to improve large-scale pv system management and operation in a low inertia power grid
… dynamics. Control complexities heighten when system inertia decreases due to the absence of synchronous generators connected to the grid. System inertia is pivotal for power system stability during sudden imbalances in active power. Thus, reducing system inertia is a significant concern for …
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Frequency and Damping Characteristics of Generators in Power Systems
A power system stability is essential for maintaining the power system oscillation frequency within a small and acceptable interval around its nominal frequency. Hence, it is necessary to study and control the frequency for stable operation of a power system by knowing the characteristics within a …
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Non-invasive system identification of a tactical generator
… methods for determining synchronous machine system parameters for a Tactical Quiet Generator (TQG), a generator commonly used by the US military, are explored. While the generator's rotor is at standstill, direct voltage excitation over a large range of excitation frequencies of a synchronous …
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DC fault protection in HVDC system and the impact on AC frequency response
… and in many applications, HVDC transmission systems become a more preferable choice compared to conventional HVAC systems. Thus, the reduction of conventional synchronous generators in the system coupled with the increase of DC connections reduces system inertia and weakens the effect of …
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Stochastic Optimization and Optimal Control for Complex Networked Infrastructures
… networks) are becoming increasingly complicated systems due to accelerating integration of distributed devices, increasing scale of network systems, heterogeneous distributed control strategies, nonlinear nature of physical models and unpredictable netloads (e.g., renewable energy and water …
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Power System Frequency Control and Stability Analysis With Increasing Renewable Energy Penetration Level
… with the deteriorated performance of power system frequency regulation and potential grid frequency instability become more significant. In this dissertation, the inertial control algorithms are investigated and analyzed for power electronics converter in a renewable energy generation unit. …
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Frequency Stability Constrained Grid Operation with High Penetration of Renewables
… integration of renewable energy into power systems. However, the swift implementation of fluctuating renewable energy (VRE) sources such as solar photovoltaics (PV) exacerbates real time power imbalances due to the randomness and uncertainty associated with VRE power generation. Further, the …
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Significance of battery energy storage systems in mitigating the challenges in weak grids
Power systems have undergone major transformations in recent years, with the main sources of generation shifting from fossil fuel generators to renewable energy sources (RES). This trend is expected to continue, as almost all government bodies have faced enormous public pressure to address climate …
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DFIG-Based Split-Shaft Wind Energy Conversion Systems
… research, a Split-Shaft Wind Energy Conversion System (SS-WECS) is investigated to improve the performance and cost of the system and reduce the wind power uncertainty influences on the power grid. This system utilizes a lightweight Hydraulic Transmission System (HTS) instead of the traditional …
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Enabling technologies and services for the green transformation of the Italian electric power system [Tecnologie e servizi abilitanti per la trasformazione verde del sistema elettrico italiano]
A causa dei cambiamenti climatici degli ultimi decenni, è urgente adottare strategie per contenerne lo sviluppo e gli effetti sul nostro pianeta. A tal fine, la comunità internazionale si è mobilitata fin dal 1997, con il protocollo di Kyoto, e ha rinnovato il suo impegno, come con la COP 21 del …