The analysis of the ice on the wires of power lines detection methods and their application for contact network
Abstract
The analysis of the ice on the wires of power lines detection methods and their application for contact network
Incoming article date: 13.12.2016Contact network work in winter conditions is much more difficult than usual. The most hard contact network mode of operation is the mode of ice with wind, which increase wind and ice load on wires and cables, reference and supporting structures. Ice loading on the wires and wind effects significantly impair the conditions of current pick-off and coupled with operational factors can cause an accident and lead to a trains stop. From this perspective the detection of glaze-ice and rime deposition in the early stages with its minimal thickness becomes of vital importance. The article examines the methods of early detection of icing which are used on the transmission lines and the ability of these methods to be used in the contact network. The terms of the contact network and power lines are different that’s why not all methods used on the transmission lines can be used. The thermodynamic method of determining the ice is observed as the main. The set of equipment that implements this method and the installation option on the contact network part have been represented.
Keywords: overhead construction, contact wire, span wire, icing, workload, detection system, control methods, glaze-ice and rime deposition, power dispatcher, the thickness of the deposits, wire breakage, information