Last edited by Grolabar
Friday, May 8, 2020 | History

4 edition of Effect of geomagnetically induced current (GIC) on second harmonic instability of HVDC converter found in the catalog.

Effect of geomagnetically induced current (GIC) on second harmonic instability of HVDC converter

Jia Li

Effect of geomagnetically induced current (GIC) on second harmonic instability of HVDC converter

by Jia Li

  • 74 Want to read
  • 22 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.)--University of Toronto, 1993.

SeriesCanadian theses = Thèses canadiennes
The Physical Object
FormatMicroform
Pagination1 microfiche : negative.
ID Numbers
Open LibraryOL15100986M
ISBN 100315835923
OCLC/WorldCa31514852

Elovaara J., et. al, Geomagnetically Induced Currents in the Nordic Power System and their Effects on Equipment, Control, Protection and Operation, CIGRE Paper 36–, Session, 30 August–5 September, , Paris, 36–, 11 pp., Google ScholarCited by: Geomagnetically induced currents (GIC) in ground systems are one of the better recognised hazards that can result from large geomagnetic storms, appearing in many national risk registers. Coupling via processes in the ionosphere, an example of GIC is the hazard to electrical transmission networks as a consequence of damage to power network.

  In this study, the time derivatives of the horizontal geomagnetic field components were computed to estimate the geomagnetically induced current (GIC) over Turkey during space weather events and the results were compared with the geomagnetic activity indices. The interplanetary magnetic field (IMF) index, disturbance storm time (D st) index, global geomagnetic activity indices (a p and K p Author: Erdinç Timuçin, Selma Erat, Erol Yaşar. Case Study – Effects of Geomagnetically Induced Current (GIC) Neutral Blocking Device Z. WANG, Q. QIU, D.R. BALL, L.E. ANDERSON American Electric Power Gahanna, Ohio USA SUMMARY The North American Electric Reliability Corporation (NERC) is developing Geomagnetic.

Geomagnetically Induced Currents (GICs) can result from geomagnetic storms—a type of space weather event in which Earth’s magnetic field is rattled by incoming magnetic solar material. Most GICs are triggered by coronal mass ejections, or CMEs, which interact with the . Modeling Geomagnetically Induced Currents in PowerWorld Simulator Introduction The purpose of this document is to explain how the impact of geomagnetically induced currents (GICs) can be modeled in PowerWorld Simulator, with their impacts directly included in the power flow equations.


Share this book
You might also like
Visitors from afar: the comets.

Visitors from afar: the comets.

Et tu, Brute?

Et tu, Brute?

ADVANCES IN TEST (STAR) V4 ANXIETY RESEA (Advances in Test Anxiety Research, 4)

ADVANCES IN TEST (STAR) V4 ANXIETY RESEA (Advances in Test Anxiety Research, 4)

Omaha beachhead (6 June-13 June 1944).

Omaha beachhead (6 June-13 June 1944).

Mangareva dictionary

Mangareva dictionary

Dinosaurs on other planets

Dinosaurs on other planets

Medicine and health care in tomorrows world

Medicine and health care in tomorrows world

Notes on the life of John Baskerville

Notes on the life of John Baskerville

The Donner Party

The Donner Party

C2-1997 National Electrical Safety Code Tentitive Interim Amendment 97-1 and Erratas Dated 3 September 1996 and 28 February 1997

C2-1997 National Electrical Safety Code Tentitive Interim Amendment 97-1 and Erratas Dated 3 September 1996 and 28 February 1997

Effect of geomagnetically induced current (GIC) on second harmonic instability of HVDC converter by Jia Li Download PDF EPUB FB2

Geomagnetically Induced Currents (GICs) have been the bane of technology-dependent societies. In telegraph lines, submarine cables, railroads and electrical power grids, nature has found a way to insert its highly-variable self, via GICs, into the workings of modern systems, often with little advance warning.

in the electric power industry today that Geo – magnetically induced currents have caused, and would cause significant damage to many of the large power transformers installed around the World, resulting in transformer failures of a large Size: KB. Large geomagnetic storms are a known space weather hazard to power transmission networks due to the effects of geomagnetically induced currents (GICs).

However, research in this area has been hampered by a lack of GIC : Craig J. Rodger, Mark A. Clilverd, Daniel H. Mac Manus, Ian Martin, Michael Dalzell, James B. Brunde. Effects of Geomagnetically Induced Currents on current transformer and differential protection Abstract: Geomagnetically Induced Current (GIC) has long been recognized to influence current transformer (CT).

Treated as quasi-DC, the effects of GIC haven't been discriminated from DC bias caused by High Voltage Direct Current transmission (HVDC).Cited by: 4. IET Digital Library: Effect of geomagnetically induced current on the loss of transformer tank Geomagnetically induced current (GIC) can cause half-cycle saturation of transformer.

The saturation can increase the stray flux entering into transformer tank, so the tank loss will by: For example, during extreme cases, rapidly changing geomagnetic fields generate intense geomagnetically induced currents (GICs). Intense GICs can cause dramatic effects on.

Geomagnetically Induced Current Effects on Transformers. Abstract: Geomagnetically induced currents (GIC) can cause saturation of the magnetic circuit of transformers in a power system.

This saturation can increase the Mvar absorption of the transformers leading to voltage control problems, generate significant harmonic currents and cause heating of the internal components of the Cited by: The temporal variations of such magnetic perturbations, hereafter referred to as " B∕ t", are of particular interest due to their relationship with geomagnetically induced currents, known as.

can induce a change in the Earth’s magnetic field. Geomagnetically induced current (GIC) then enters the power grid and causes unusual real and reactive power flows, voltage fluctuations, frequency shifts, undesired relay operations, high third-harmonic currents and telemetry and supervisory alarm failures.

Corpus ID: Currents produced in earthed conductor networks by geomagnetically-induced electric fields @inproceedings{LehtinenCurrentsPI, title={Currents produced in earthed conductor networks by geomagnetically-induced electric fields}, author={Merja Lehtinen and.

These geomagnetically induced currents (GICs) pose a potentially catastrophic threat to the power distribution systems on which society depends.

For example, a solar storm in March triggered GICs that caused cascading transformer failures and widespread blackouts that affected millions of.

Geomagnetically induced currents (GICs) are a potential threat to power system stability and availability. The inclusion of particular elements in the power system can optimize the resilience of the system to this threat. The flow of GIC through transmission lines and transformers across a power network could have negative : David T.O.

Oyedokun, Pierre J. Cilliers, Pierre J. Cilliers. Geomagnetically induced current (GIC) and geomagnetic disturbance (GMD) events are caused by solar flares ejected from the surface of the sun. The ionized atoms of these supersonic plasma streams interact with charged particles in the earth’s atmosphere and induce changes in the earth’s magnetic field.

Intense GICs can cause dramatic effects on human technological systems, such as damage to high-voltage power transmission transformers leading to interruption of power supply, and/or corrosion of oil and gas pipelines. These space weather effects can in turn lead to severe economic : Mirko Piersanti, Brett Carter.

The effect of the induced (telluric) current on the geomagnetic variations at the Earth's surface is difficult to quantify for its effect is depend on the ground conductivity and the frequency of. Keywords: Geomagnetically induced current, current transformer, power system protection, dependability, security.

Abstract This paper analyzes the performance of current transformers (CTs) under the presence of geomagnetically induced currents (GICs).

Our intent is to ze characterithe impact of GICs on CT performance in the context of. Geomagnetically induced currents, affecting the normal operation of long electrical conductor systems, are a manifestation at ground level of space weather.

During space weather events, electric currents in the magnetosphere and ionosphere experience large variations, which manifest also in the Earth's magnetic field.

These variations induce currents in conductors operated on the surface of Earth. Geomagnetically induced currents (GICs) have the potential to cause electric power blackouts. Hence, it is important to study the effects of GICs produced by intense geomagnetic storms.

The measurements of GICs were conducted at the Memanbetsu substation, Hokkaido, between December and March We obtain the complementary cumulative distribution function Cited by: As this current varies with time it induces an electric field at the ground level, called a geoelectric field.

The geoelectric field will in turn cause a current to flow in the geoelectric field’s direction, a geomagnetically induced current (GIC) (Wik, ). This current will take the path of least by: 3. New Bigfoot Book & Geomagnetically induced (Electrical) currents.

Geomagnetically induced currents Effect of geomagnetically induced currents. The time derivative of the magnetic field provides a proxy for the associated geoelectric field, which can drive geomagnetically induced currents in Earthed conductors. The geoelectric field is thus a key quantity for space weather effects on technological systems such as power grids, and it can be obtained by modelling the magnetic field using.[J] R.

Lee, A.B. Birchfield, K. S. Shetye, T. J. Overbye, “Using Detailed Ground Modeling to Evaluate Electric Grid Impacts of Late-Time High-Altitude.

Space weather is a popular and important research topic today. Its origin isin the Sun. Space weather effects extend to the surface of the Earth where theyare usually called GIC referring to geomagnetically induced currents intechnological systems such as electric power transmission grids, oil and gaspipelines, telecommunication cables and railway by: