| Title | Effects of system characteristics on geomagnetically induced currents |
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| Author | Zheng, K; Boteler, D H ; Pirjola, R J; Liu, L -G; Becker, R; Marti, L;
Boutilier, S; Guillon, S |
| Source | IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers) vol. 29, no. 2, 2014 p. 891-898, https://doi.org/10.1109/TPWRD.2013.2281191 |
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| Year | 2014 |
| Alt Series | Earth Sciences Sector, Contribution Series 20140022 |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; Health and Safety; geomagnetism; geomagnetic fields; geomagnetic variations; electric power |
| Illustrations | plots; tables; graphs |
| Program | Public Safety Geoscience Northern Canada Geohazards Project |
| Released | 2014 04 01 |
| Abstract | The geomagnetically induced currents (GICs) produced in power systems during magnetic storms are a function of the electric-field amplitude and direction, and the characteristics of the power system.
This paper examines the influence of a number of power system characteristics, which include the resistances and structures of the conductors; the length of the transmission lines; the number, type, and resistances of transformers, the substation
grounding resistances, and the topology of the network. It is shown that GIC grows with increasing line length but approaches an asymptotic constant value, and a more relevant parameter than the individual line length is the length of the entire
system. This paper also derives the effective GIC for a conventional transformer and an autotransformer, and analyzes the behavior of GIC when the network topology changes illustrated with the GIC-Benchmark Model. The results of these studies provide
a guide to estimating GIC impacts on a power network. |
| 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 how the system characteristics affect the geomagnetically induced currents that can be a hazard to power systems. |
| GEOSCAN ID | 293897 |
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