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TitleDevelopment of a GIC Simulator
AuthorBoteler, D H; Pirjola, R; Blais, C; Foss, A
SourceProceedings of the PES General Meeting - Conference & Exposition, 2014 IEEE; 2014 p. 1-5,
Alt SeriesEarth Sciences Sector, Contribution Series 20130402
MeetingIEEE PES General Meeting; Washington, DC; US; July 27-31, 2014
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; geomagnetism; geomagnetic fields; magnetic field; conductivity
Illustrationsgraphs; plots; screen captures; tables
ProgramNorthern Canada Geohazards Project, Public Safety Geoscience
AbstractThis paper describes the development of a system for simulation of the geomagnetically induced currents (GIC) produced in a power system. Magnetic field data or a specified electrojet current are used with an Earth conductivity model to calculate the electric fields at the Earth's surface. These electric field values are used as input to a power system model to give the geomagnetically induced currents throughout the network. Practical calculations can be made by superposition of results calculated separately for northward and eastward electric fields. Superposition can be used with magnetic data from a single observatory for uniform fields, or with data from two observatories assuming a linear variation of the magnetic fields between the two observatory locations. Combining these calculations provides an efficient method for simulating the geomagnetically induced currents produced during any disturbance for which geomagnetic data are available.
Summary(Plain Language Summary, not published)
Space weather refers to the dynamic conditions on the Sun and in the space environment, in particular, in the near-Earth environment, that can affect critical infrastructure. NRCan operates the Canadian Space Weather Forecast Centre and conducts research into space weather effects on power systems, pipelines, satellites, radio communications and GNSS positioning to help Canadian industry understand and mitigate the effects of space weather. This paper describes a system for simulating geomagnetically induced currents (GIC) in power systems that can be used to assess the geomagnetic hazard to power systems.