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Vibration Studies of HVCC OHLs

Vibration Studies of HVCC OHLs. 2011-06-17 Leskinen KT. Mätäkivi-Sula 110 kV CC-line . Covered conductor LMF SAX 355 d = 39 mm, m = 1.73 kg/m Conducted studies: Self-damping measurements ( Ribe ) Measurement of true amplitude/stress conversion factor K Field vibration measurements.

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Vibration Studies of HVCC OHLs

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  1. Vibration Studies of HVCC OHLs 2011-06-17 Leskinen KT

  2. Mätäkivi-Sula 110 kV CC-line • Covered conductor LMF SAX 355 • d = 39 mm, m = 1.73 kg/m • Conducted studies: • Self-damping measurements (Ribe) • Measurement of true amplitude/stress conversion factor K • Field vibration measurements 2011-06-17 Leskinen KT

  3. Mätäkivi-Sula 110 kV CC-line • Lifetime estimates based on EBA • Used H/w ≈ 860 m 2011-06-17 Leskinen KT

  4. Mätäkivi-Sula 110 kV CC-line • Measurement of true conversion factor K • K’ ≈ 2.2·K(P-S) 2011-06-17 Leskinen KT

  5. Mätäkivi-Sula 110 kV CC-line • Field measurements 1996-03-22…1997-06-18 • 5 periods, 4 spans/recorders 2011-06-17 Leskinen KT

  6. Tuulikylä-Noormarkku110 kV CC-line • Covered conductor LMF SAX 185 • d = 30 mm, m = 1.0 kg/m • Conducted studies: • Self-damping measurements (NK Energy) • Field vibration measurements • Forest-Sax project 2011-06-17 Leskinen KT

  7. Tuulikylä-Noormarkku 110 kV CC-line • Lifetime estimates based on EBA • Used H/w ≈ 780 m 2011-06-17 Leskinen KT

  8. Tuulikylä-Noormarkku 110 kV CC-line • Field measurements 2000-01-20…2000-08-03 • 2 periods, 4 spans/recorders • K’ ≈ 2.2·K(P-S) used -0.8 °C +13.1 °C 2011-06-17 Leskinen KT

  9. References • Leskinen, T. Wind-Induced Transmission Line Conductor Vibration: Theory and Measurements. Licentiate Thesis, Lappeenranta University of Technology, 1998. p. 65. • Leskinen, T., Kantola K., Lifetime Estimation of a Covered Overhead Line Conductor, Wind and Structures, 6(2003)4, pp. 307-324. 2011-06-17 Leskinen KT

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