Abstract:

Through establishing icing thickness mechanical models for overhead transmission lines, the formula for calculating the ice thickness of lines and wire sag is derived. Using the formula, thickness of the ice coating of ±800kV Fufeng line in Hunan region was calculated. Comparing the calculating results with field test results, the calculation error was 9.02%. The model can be used to predict the thickness of wire ice coating in advance, and provides a preliminary warning for icing protection.

Key words:

overhead lines, wire, ice thickness, wire sag