Differential magnetometer method applied to measurement of geomagnetically induced currents in Southern African power networks
Geomagnetically induced currents (GICs) in conductors connected to the Earth are driven by an electric field produced by a time‐varying magnetic field linked to magnetospheric‐ionospheric current perturbations during geomagnetic storms. The GIC measurements are traditionally done on the neutral‐to‐g...
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| Veröffentlicht in: | Space Weather 2016-03, Vol.14 (3), p.221-232 |
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| creator | Matandirotya, Electdom Cilliers, Pierre. J. Van Zyl, Robert R Oyedokun, David T. Villiers, Jean |
| description | Geomagnetically induced currents (GICs) in conductors connected to the Earth are driven by an electric field produced by a time‐varying magnetic field linked to magnetospheric‐ionospheric current perturbations during geomagnetic storms. The GIC measurements are traditionally done on the neutral‐to‐ground connections of power transformers. A method of inferring the characteristics of GIC in power lines using differential magnetic field measurements is presented. Measurements of the GIC in the power lines connected to a particular power transformer are valuable in the verification of the modeling of GIC in the power transmission network. The differential magnetometer method (DMM) is an indirect method used to estimate the GIC in a power line. With the DMM, low‐frequency GIC in the power line is estimated from the difference between magnetic field recordings made directly underneath the power line and at some distance away, where the magnetic field of the GIC in the transmission line has negligible effect. Results of the first application of the DMM to two selected sites of the Southern African power transmission network are presented. The results show that good quality GIC measurements are achieved through the DMM using Commercially‐Off‐The‐Shelf magnetometers.
Key Points
Geomagnetically induced currents
Magnetic field measurements |
| doi_str_mv | 10.1002/2015SW001289 |
| format | Article |
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Key Points
Geomagnetically induced currents
Magnetic field measurements</description><identifier>ISSN: 1542-7390</identifier><identifier>ISSN: 1539-4964</identifier><identifier>EISSN: 1542-7390</identifier><identifier>DOI: 10.1002/2015SW001289</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>differential magnetometer measurements ; Electric power generation ; Electricity distribution ; geomagnetically induced currents ; Geomagnetism ; Geophysics ; Magnetic field measurement ; Magnetic fields ; Networks ; Power lines ; Power transmission ; Transformers</subject><ispartof>Space Weather, 2016-03, Vol.14 (3), p.221-232</ispartof><rights>2016. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4387-a7fee7b85e456c7a18ecf953329c64f77f233eb9aa7e779be88c46bf7ba2fea23</citedby><cites>FETCH-LOGICAL-c4387-a7fee7b85e456c7a18ecf953329c64f77f233eb9aa7e779be88c46bf7ba2fea23</cites><orcidid>0000-0003-4447-1827</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2015SW001289$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2015SW001289$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,27923,27924,45573,45574</link.rule.ids></links><search><creatorcontrib>Matandirotya, Electdom</creatorcontrib><creatorcontrib>Cilliers, Pierre. J.</creatorcontrib><creatorcontrib>Van Zyl, Robert R</creatorcontrib><creatorcontrib>Oyedokun, David T.</creatorcontrib><creatorcontrib>Villiers, Jean</creatorcontrib><title>Differential magnetometer method applied to measurement of geomagnetically induced currents in Southern African power networks</title><title>Space Weather</title><description>Geomagnetically induced currents (GICs) in conductors connected to the Earth are driven by an electric field produced by a time‐varying magnetic field linked to magnetospheric‐ionospheric current perturbations during geomagnetic storms. The GIC measurements are traditionally done on the neutral‐to‐ground connections of power transformers. A method of inferring the characteristics of GIC in power lines using differential magnetic field measurements is presented. Measurements of the GIC in the power lines connected to a particular power transformer are valuable in the verification of the modeling of GIC in the power transmission network. The differential magnetometer method (DMM) is an indirect method used to estimate the GIC in a power line. With the DMM, low‐frequency GIC in the power line is estimated from the difference between magnetic field recordings made directly underneath the power line and at some distance away, where the magnetic field of the GIC in the transmission line has negligible effect. Results of the first application of the DMM to two selected sites of the Southern African power transmission network are presented. The results show that good quality GIC measurements are achieved through the DMM using Commercially‐Off‐The‐Shelf magnetometers.
Key Points
Geomagnetically induced currents
Magnetic field measurements</description><subject>differential magnetometer measurements</subject><subject>Electric power generation</subject><subject>Electricity distribution</subject><subject>geomagnetically induced currents</subject><subject>Geomagnetism</subject><subject>Geophysics</subject><subject>Magnetic field measurement</subject><subject>Magnetic fields</subject><subject>Networks</subject><subject>Power lines</subject><subject>Power transmission</subject><subject>Transformers</subject><issn>1542-7390</issn><issn>1539-4964</issn><issn>1542-7390</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqN0UtLAzEQAOBFFKyPmz8g4MWD1by2SY5F6wMKHqp4XLLpRFd3N2uyS-nF3-5IPRQPIoFJGL6ZIUyWnTB6wSjll5yyfPFMKePa7GQjlks-VsLQ3a33fnaQ0htqmXM5yj6vK-8hQttXtiaNfWmhDw30EAnG17AktuvqCpakD5ixaYjQoCbBkxcIm4LK2bpek6pdDg6lG-J3w4QJsghD_wqxJVMfkbWkCyvsjUWrEN_TUbbnbZ3g-Oc-zJ5uZo9Xd-P5w-391XQ-dlJoNbbKA6hS5yDziVOWaXDe5EJw4ybSK-W5EFAaaxUoZUrQ2slJ6VVpuQfLxWF2tunbxfAxQOqLpkoO6tq2EIZUME3xaMP-QZWhRvFcaqSnv-hbGGKLH0GlucAgGarzjXIxpBTBF12sGhvXBaPF996K7b0h5xu-qmpY_2mLxfOMUxwjvgC0JpvZ</recordid><startdate>201603</startdate><enddate>201603</enddate><creator>Matandirotya, Electdom</creator><creator>Cilliers, Pierre. J.</creator><creator>Van Zyl, Robert R</creator><creator>Oyedokun, David T.</creator><creator>Villiers, Jean</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-4447-1827</orcidid></search><sort><creationdate>201603</creationdate><title>Differential magnetometer method applied to measurement of geomagnetically induced currents in Southern African power networks</title><author>Matandirotya, Electdom ; Cilliers, Pierre. J. ; Van Zyl, Robert R ; Oyedokun, David T. ; Villiers, Jean</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4387-a7fee7b85e456c7a18ecf953329c64f77f233eb9aa7e779be88c46bf7ba2fea23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>differential magnetometer measurements</topic><topic>Electric power generation</topic><topic>Electricity distribution</topic><topic>geomagnetically induced currents</topic><topic>Geomagnetism</topic><topic>Geophysics</topic><topic>Magnetic field measurement</topic><topic>Magnetic fields</topic><topic>Networks</topic><topic>Power lines</topic><topic>Power transmission</topic><topic>Transformers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Matandirotya, Electdom</creatorcontrib><creatorcontrib>Cilliers, Pierre. J.</creatorcontrib><creatorcontrib>Van Zyl, Robert R</creatorcontrib><creatorcontrib>Oyedokun, David T.</creatorcontrib><creatorcontrib>Villiers, Jean</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Space Weather</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Matandirotya, Electdom</au><au>Cilliers, Pierre. J.</au><au>Van Zyl, Robert R</au><au>Oyedokun, David T.</au><au>Villiers, Jean</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Differential magnetometer method applied to measurement of geomagnetically induced currents in Southern African power networks</atitle><jtitle>Space Weather</jtitle><date>2016-03</date><risdate>2016</risdate><volume>14</volume><issue>3</issue><spage>221</spage><epage>232</epage><pages>221-232</pages><issn>1542-7390</issn><issn>1539-4964</issn><eissn>1542-7390</eissn><abstract>Geomagnetically induced currents (GICs) in conductors connected to the Earth are driven by an electric field produced by a time‐varying magnetic field linked to magnetospheric‐ionospheric current perturbations during geomagnetic storms. The GIC measurements are traditionally done on the neutral‐to‐ground connections of power transformers. A method of inferring the characteristics of GIC in power lines using differential magnetic field measurements is presented. Measurements of the GIC in the power lines connected to a particular power transformer are valuable in the verification of the modeling of GIC in the power transmission network. The differential magnetometer method (DMM) is an indirect method used to estimate the GIC in a power line. With the DMM, low‐frequency GIC in the power line is estimated from the difference between magnetic field recordings made directly underneath the power line and at some distance away, where the magnetic field of the GIC in the transmission line has negligible effect. Results of the first application of the DMM to two selected sites of the Southern African power transmission network are presented. The results show that good quality GIC measurements are achieved through the DMM using Commercially‐Off‐The‐Shelf magnetometers.
Key Points
Geomagnetically induced currents
Magnetic field measurements</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/2015SW001289</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0003-4447-1827</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete; EZB-FREE-00999 freely available EZB journals |
| subjects | differential magnetometer measurements Electric power generation Electricity distribution geomagnetically induced currents Geomagnetism Geophysics Magnetic field measurement Magnetic fields Networks Power lines Power transmission Transformers |
| title | Differential magnetometer method applied to measurement of geomagnetically induced currents in Southern African power networks |
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