Transcript CNC CIGRE SC COMMITTEE MEETING November 22, 2004 …

Study Committee Representatives Annual Meeting
October 19, 2008
Winnipeg
SC B2 “Overhead Lines”
Activity Report
Presented by: Zibby Kieloch (Manitoba Hydro)
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SC B2 Overhead Lines
Subject Area
• Design, construction and operation of overhead lines
including the mechanical and electrical (in cooperation
with SC C3 & SC C4) design of line components
(conductors, ground wires, insulators, accessories,
structures and their foundations).
• Validation tests, studies of in service performance,
assessment of the state of line components and elements.
• Maintenance, refurbishment, upgrading, and uprating of
overhead lines.
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SC B2 Overhead Lines
Membership
• 24 Regular Country Members (including Canada)
• 12 Observer Country Members
Canadians On SC B2
• 32 Canadians in various groups (total number of technical
experts from all countries: 200+)
• 4 new Canadian experts added last year
• Canada is represented on all but one Working Group
• Mr. Normand Bell (Hydro-Quebec) – SC B2 Secretary
• 3 Canadians as Convenors of Working Groups
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SC B2 Overhead Lines
Structure - General
New structure introduced in 2008:
• Convenor and Secretary
• 7 New Advisory Groups:
• 4 Technical
• 3 Supporting: Strategic, Customer, Publications &
Tutorials
• Disbanded most of the existing Working Groups (upon
completion of work)
• Created 22 new Working Groups with narrow focus
• Eliminated existing Task Force groups
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.04 Electrical Performance Advisory Group
• TF B2.20 “Management of risks due to load-flow
capacity increases in transmission overhead lines”
• WG B2.26 “A guide to evaluating and accepting new
types of overhead conductor including those running at
high temperature”
• WG B2.36 “Guide for application of direct real time
monitoring systems on overhead transmission lines”
• WG B2.38 “Evaluation of high surge impedance load
solutions for increased natural capacity for OHL”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.05 Towers, Foundations and Insulators Advisory
Group
• WG B2.08 “Transmission Line Structures” (soon to be
disbanded and replaced by 2 new Working Groups)
• WG B2.21 “Arc protection and diagnosis for composite
string insulators ”
• WG B2.23 “Geotechnical and structural design of the
foundations of HV & UHV Lines ”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.06 Mechanical Behaviour Of Conductors and
Fittings Advisory Group
• WG B2.25 “Preparatory studies on specifications for
revision of IEC testing of self damping and conductor
fatigue characteristics (new IEC Spec.), for high
temperature fittings (IEC 61284), for tests on spacers
(IEC 61854) and on dampers (IEC 61897)”
• WG B2.30 “Engineering guidelines relating to fatigue
endurance capability of conductor/clamp systems”
• WG B2.31 “Modeling of aeolian vibration of single
conductors”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.06 Mechanical Behaviour Of Conductors and
Fittings Advisory Group (cont’d)
• WG B2.32 “Assessing the performance of aged fittings:
testing, acceptance criteria & recommendations for HV &
UHV lines”
• WG B2.33 “Guidelines for cable cart/trolley (cycling)
safety on old conductors (earthwires) equipped with
aircraft warning markers (and other fittings)”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.07 Asset Management, Reliability and
Availability Advisory Group
• WG B2.16 “Meteorology for overhead lines” (soon to be
disbanded and replaced by a new Working Group)
• WG B2.22 “Mechanical security of overhead lines with
effective failure containment measures: design loading
cases and strategies for effective anti-cascading supports”
• JWG B2/B3.27 “Live-Line Maintenance - A
Management Perspective”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.07 Asset Management, Reliability and
Availability Advisory Group (cont’d)
• WG B2.29 “Anti- and de-icing systems for HV and UHV
overhead lines”
• WG B2.34 “The impact of line configurations on electric
and magnetic fields, radio interference and audible noise
for 800 and 1000 kV OHL”
• WG B2.39 “Validation of design guidelines implemented
for High Intensity Winds (HIW)”
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SC B2 Overhead Lines
Structure - Technical Groups
AG B2.07 Asset Management, Reliability and
Availability Advisory Group (cont’d)
• WG B2.40 “Calculations of the electrical distances
between live parts and obstacles for OHL: Preparatory
studies for revision of IEC standards (IEC 61865, IEC
60826, EN 50341)”
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SC B2 Overhead Lines
Structure - Technical Groups
Special Technical Groups
• JWG B2/B4/C1.17 “Impacts of HVDC Lines on
Economics of HVDC Projects”
• JTF B2/D2.18 “Overhead lines geographical and asset
information system”
• JWG B2/C1.19 “Increasing capacity of overhead lines needs and solutions”
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SC B2 Overhead Lines
Meetings
CIGRÉ 2008 Paris Session
• Working Group Meetings: August 22-28, 2008
• SC B2 Open Session:
August 26, 2008
2 Preferential Subjects:
“Increasing capacity of overhead lines”
“Solutions to improve the availability of overhead lines”
27 Technical Papers
• Technical Meeting:
August 27, 2008
• Administrative Meeting: August 28, 2008
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SC B2 Overhead Lines
Meetings
Next SC Meeting
• October 2009 in Seoul, Korea
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SC B2 Overhead Lines
Main Achievements in 2007-2008
Publications:
SC B2 was the most productive among all 16 CIGRÉ
Study Committees. A total of 11 Electra articles and 10
Technical Brochures were produced in 2007-2008.
•
•
•
•
TB 322 / ELT 232_3 “State of the art of conductor galloping”
TB 324 / ELT 232_4 “Sag-tension calculations for overhead lines”
ELT 232_2 “Generic specification for an ideal load control device”
TB 333 / ELT 234_3 “Guide for the establishment of naturally
polluted insulator testing stations”
• TB 331 / ELT 234_4 “Considerations relating to the use of hightemperature conductors”
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SC B2 Overhead Lines
Main Achievements in 2007-2008
Publications (cont’d):
• TB 332 / ELT 234_5 “Fatigue endurance capability of
conductor/clamp systems - update of present knowledge”
• TB 344 / ELT 237_5 “Big storm events - what we have learned”
• TB 345 / ELT 237_6 “Alternating current (AC) resistance of helically
stranded conductors”
• TB 348 / ELT 238_4 “Tower top geometry and mid span clearances”
• TB 350 / ELT 238_5 “How overhead lines (OHL) respond to
localized high intensity winds - basic understanding”
• TB 353 / ELT 239_3 “Guidelines for increased utilization of existing
overhead transmission lines”
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SC B2 Overhead Lines
Expected Key Deliverables in 2009-2010
Expected Publications:
• “Guidelines for evaluating special topographical effects in
determining wind speed for design of overhead lines”
• “Probabilistic design of foundations”
• “Failure load of OHL steel towers considering the variation of
mechanical properties”
• “Innovative solutions for overhead line supports”
• “Comparison of general practices for lattice tower design and
detailing”
• “Discrepancies between predicted and measured values of load in
members of towers during tests; influence of the hyperstatic modeling
on the behaviour of transmission line lattice structures”
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SC B2 Overhead Lines
Expected Key Deliverables in 2009-2010
Expected Publications (cont’d):
•
•
•
•
“Improvement on the methodology of tower testing”
“Large overhead line crossings”
“Impacts of HVDC Lines on Economics of HVDC Projects”
“Guidelines for cable cart/trolley (cycling) safety on old conductors
(earthwires) equipped with aircraft warning markers (and other
fittings)”
• “Assessing the performance of aged fittings: - Testing, acceptance
criteria & recommendations for HV & UHV Lines”
• “Aeolian Vibrations of Single Conductors Strung at Relatively High
Tensile Load. Application to HV & UHV Lines”
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