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CIGRE WG C4.28 Extrapolation of EMF measurements

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Presentation on theme: "CIGRE WG C4.28 Extrapolation of EMF measurements"— Presentation transcript:

1 CIGRE WG C4.28 Extrapolation of EMF measurements
WG Composition: Convener: F. DESCHAMPS (RTE, France) 12 full members ; 3 corresponding member 11 countries (FR, JP, BR, US, RO, IT, BE, SE, IE, NL, DE) 10 members from electrical utilities (TSOs), 3 from universities, 1 consultant. WG Timeline: Kick-off meeting : Paris, 01/2013 Last meeting: Nara, 10/2013 (CIGRE Seminar EMF 2013) Expected Date for Submitting Final Report : 2015

2 CIGRE WG C4.28 Extrapolation of EMF measurements
Highlights of Recent Activity: Oral presentation (+ tutorial for general presentation of the WG) at CIGRE EMF 2013 Ongoing technical Activity: Software comparison (corporate or commercially available) for calculating sag variations for a sample of representative HV overhead lines, under different current flows. 4 contributions received from members. Significant differences observed in: calculated current for a given temperature sag variation Critical issue : the thermal equation used in the software (IEEE / CIGRE)

3 CIGRE WG C4.28 Extrapolation of EMF measurements
Remaining Technical issues (2014): Due to the differences observed in the software comparison, how to define a reference configuration ? Quantify the influence of the sag variation on the magnetic field at ground level Define correction factors and assess related uncertainties Work organization (2014 and 2015): Decision not to hold a meeting till major technical issues are solved = Work by correspondence only Meeting to be planned in 2015 with the objective of issuing a final draft


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