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 “"voltage support"”.
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Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality
… wind energy systems can actually assist with voltage support. It will be shown in this study that disconnecting large scale PMSGs based wind turbines during grid disturbances has a detrimental effect on transient stability of the grid. This study will show that PMSG-based wind energy systems …
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Reactive power support capability of flyback microinverter with pseudo-dc link
… power to the grid which is important for grid voltage support. Circuit models and mathematical analyses are developed to explain underlying issues such as harmonic distortion, and power losses, which can limit the reactive power support capability. A novel current decoupling circuit is proposed …
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Drivers of change in the North American electric grid
… level is evaluated towards reactive power voltage support. These smart devices are becoming more common, and many of them already possess the hardware and software capabilities to implement reactive power injection control. In the near future, such devices would be dispersed over a large …
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Modeling and Analysis of a Dynamic Voltage Regulator
… often highly variable, resulting in undesirable voltage disruptions that are harmful to sensitive loads. In addition to the energy variability of renewable energy sources, random voltage sags, swells and disruptions are already a major issue in power systems. Recent advances in power electronic …
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Reactive power compensation of fixed speed wind turbines using a hybrid wind turbine technology
… for its reactive power need and improve voltage stability during a fault condition. In steady-state conditions, these WTs experience large fluctuations in the generator terminal voltage because of uncontrolled consumption of reactive power. During grid fault conditions, the FSWT consumes …
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Robust implementation of algorithms for distributed generation control of small-footprint power systems
… ancillary services to power systems such as voltage support and frequency regulation. Given the relative size of the resources, however, the provision of these services will require the coordination of several DERs such that their collective capabilities have sufficient impact on a system …
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Utility Applications of Smart Online Energy Systems: A case for Investing in Online Power Electronics
… Alternating Current Transmission), HVDC (High Voltage Direct Current) in transmission and Custom Power devices in distribution. FACTS devices are some of the advanced assets that network planners can use to make the transmission grid become more flexible and robust. Many established research …
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Stability impact of increased DER penetration in regard to the IEEE 1547 standard in the presence of cyberadversaries
… during certain disturbances and provide voltage support via active and reactive power modes. The advent of these functionalities also introduces possible risks where certain settings combinations, which, while allowable under the standard, may actually create instability. The notion that …
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Advanced control in smart microgrids
… (PV) panels, are being connected to low-voltage distribution networks. Because of the intermittent nature of the renewable energy sources, it would be a good idea to connect these DG units together with energy storage units and loads to form a local micro power system, known as microgrid. …
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Control of an H-bridge modular multilevel converter for reliable operation of DC transmission systems
… The schemes enable H-bridge MMC cell capacitor voltages to be regulated independent of the DC link voltage in a DC transmission system, and also permit operation with variable DC link voltage, down to zero voltage, with full control over active and reactive power exchange. The proposed schemes …
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Toward Systematic Integration of Inverter-Based Resources in Electricity Markets
… power factor prevents the IBR from providing voltage support through reactive power absorption/injection. With a fixed power factor, constant real and reactive power limits are imposed on the inverter, even during voltage transients, ignoring the fact that an inverter’s available capacity can …
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Impacts of Distributed Generation on the Residential Distribution Network Operation
… on distribution network operation including voltage analysis, electric losses and reliability of the system. First, various DG penetration levels and the impact of distributing the DG across several locations are explored. Secondly, the impacts of installing DG on any one phase on the voltage …
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Electrochemical Capacitor Characterization for Electric Utility Applications
… used to assist the electric utility by providing voltage support, power factor correction, active filtering, and reactive and active power support. A number of electric utility applications have been proposed but, to date, ECs have not been very well characterized for use in these applications. …
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Modeling and Simulation of Parallel D-STATCOMs with Full-Wave Rectifiers
… power to a point on the grid, thus reducing voltage fluctuations due to load changes. The purpose of this thesis is to model and simulate the operation of two Distribution STATCOMs (D-STATCOMs) operating on the same point on the grid. These D-STATCOMs also utilize parallel full-wave …