Search Results - "Boteler, David"

Distributed-Source Transmission Line Theory for Modeling the Coast Effect on Geoelectric Fields by Wang, Xuan, Boteler, David, Pirjola, Risto

“…Geomagnetic effects on man-made ground-based systems are an increasing concern such as power grids, submarine cables, pipelines, and railway systems. Assessing…”
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The Evolution of Québec Earth Models Used to Model Geomagnetically Induced Currents by Boteler, David H.

“…Geomagnetically induced currents (GIC) in power systems can interfere with the system operation and, in extreme cases, can damage transformers and cause power…”
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Methodology for simulation of geomagnetically induced currents in power systems by Boteler, David

“…To assess the geomagnetic hazard to power systems it is useful to be able to simulate the geomagnetically induced currents (GIC) that are produced during major…”
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Insight into impact of geomagnetically induced currents on power systems: Overview, challenges and mitigation by Rajput, Vipul N., Boteler, David H., Rana, Nishil, Saiyed, Mahenaj, Anjana, Smit, Shah, Meet

“…•Overview of Geomagnetic Disturbances (GMDs).•Geomagnetically Induced Currents (GICs) calculation.•Comprehensive review on the impact of GICs on power…”
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Modelling electrified railway signalling misoperations during extreme space weather events in the UK by Patterson, Cameron J., Wild, James A., Beggan, Ciarán D., Richardson, Gemma S., Boteler, David H.

“…Space weather has the potential to impact ground-based technologies on Earth, affecting many systems including railway signalling. This study uses a recently…”
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The Lehtinen–Pirjola method modified for efficient modelling of geomagnetically induced currents in multiple voltage levels of a power network by Pirjola, Risto J., Boteler, David H., Tuck, Loughlin, Marsal, Santiago

“…The need for accurate assessment of the geomagnetic hazard to power systems is driving a requirement to model geomagnetically induced currents (GIC) in…”
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A Test Case for the Calculation of Geomagnetically Induced Currents by Horton, R., Boteler, D. H., Overbye, T. J., Pirjola, R. J., Dugan, R.

“…Geomagnetically induced currents (GICs) in power systems can be attributed to problems ranging from transformer overheating, misoperation of protective relays,…”
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Superposed Epoch Analysis of Nighttime Magnetic Perturbation Events Observed in Arctic Canada by Engebretson, Mark J., Ahmed, Lidiya Y., Pilipenko, Viacheslav A., Steinmetz, Erik S., Moldwin, Mark B., Connors, Martin G., Boteler, David H., Weygand, James M., Coyle, Shane, Ohtani, Shin, Gjerloev, Jesper, Russell, Christopher T.

“…Rapid changes of magnetic fields associated with nighttime magnetic perturbation events (MPEs) with amplitudes |ΔB| of hundreds of nT and 5–10 min duration can…”
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Interhemispheric Comparisons of Large Nighttime Magnetic Perturbation Events Relevant to GICs by Engebretson, Mark J., Kirkevold, Kathryn R., Steinmetz, Erik S., Pilipenko, Viacheslav A., Moldwin, Mark B., McCuen, Brett A., Clauer, C. R., Hartinger, Michael D., Coyle, Shane, Opgenoorth, Hermann, Schillings, Audrey, Willer, Anna N., Edwards, Thom R., Boteler, David H., Gerrard, Andy J., Freeman, Mervyn P., Rose, Michael C.

“…Nearly all studies of impulsive magnetic perturbation events (MPEs) with large magnetic field variability (dB/dt) that can produce dangerous geomagnetically…”
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Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case by Boteler, David H., Pirjola, Risto J., Marti, Luis

“…Geomagnetic field variations produce geoelectric fields that can affect the operation of technological networks at the Earth's surface, including power…”
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Occurrence rate and duration of space weather impacts on high-frequency radio communication used by aviation by Fiori, Robyn A. D., Kumar, Vickal V., Boteler, David H., Terkildsen, Michael B.

“…High frequency (HF) radio wave propagation is sensitive to space weather-induced ionospheric disturbances that result from enhanced photoionization and…”
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Modeling geomagnetic induction in submarine cables by Chakraborty, Shibaji, Boteler, David H., Shi, Xueling, Murphy, Benjamin S., Hartinger, Michael D., Wang, Xuan, Lucas, Greg, Baker, Joseph B. H.

“…Submarine cables have become a vital component of modern infrastructure, but past submarine cable natural hazard studies have mostly focused on potential cable…”
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Geoelectric Fields Due to Small-Scale and Large-Scale Source Currents by Kuan Zheng, Pirjola, R. J., Boteler, D. H., Lian-guang Liu

“…Geomagnetically induced currents (GIC) produced by the geoelectric fields at the earth's surface may affect the normal operation of power systems. These…”
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Ground effects of space weather investigated by the surface impedance by Pirjola, Risto, Boteler, David, Trichtchenko, Larisa

“…The objective of this paper is to provide a discussion of the surface impedance applicable in connection with studies of geomagnetically induced currents (GIC)…”
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Modeling geomagnetically induced currents using geomagnetic indices and data by Trichtchenko, L., Boteler, D.H.

“…The possibilities of forecasting geomagnetically induced currents (GIC) in power transmission networks are dependent on the success in modeling these currents…”
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New Insights Into Calculations of AC Interference at Fundamental and Harmonic Frequencies Taking Account of the Phase Relationships of the Currents by Boteler, David, Charalambous, Charalambos A., Lax, Kenneth

“…Electromagnetic interference to pipelines and railways from AC sources has long been a cause for concern. Methods and standards have evolved to enable…”
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Simulation of Geomagnetically Induced Currents With Piecewise Layered-Earth Models by Marti, Luis, Yiu, Cynthia, Rezaei-Zare, Afshin, Boteler, David

“…The relationship between the changes in the earth's magnetic field and the induced geoelectric field during a geomagnetic storm is a frequency-dependent…”
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Calculation methods of the electric and magnetic fields at the Earth's surface produced by a line current by Pirjola, Risto, Boteler, David

“…Space weather storms involve intense and rapidly varying electric currents in the ionosphere, which create electric and magnetic fields at the Earth's surface…”
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Influence of shield wires on geomagnetically induced currents in power systems by Liu, Chunming, Boteler, David H., Pirjola, Risto J.

“…•This study investigate multiple ways in which shield wires can influence the GIC in power grids.•The effect of shield wires on the effective substation…”
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Effects of System Characteristics on Geomagnetically Induced Currents by Kuan Zheng, Boteler, David, Pirjola, Risto J., Lian-guang Liu, Becker, Richard, Marti, Luis, Boutilier, Stephen, Guillon, Sebastien

“…The geomagnetically induced currents (GICs) produced in power systems during magnetic storms are a function of the electric-field amplitude and direction, and…”
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