RESEARCH PAPER
Analysis of the possibilities to improve the reliability of a 15 kV overhead line exposed to catastrophic icing in Poland
| 1 | AGH University of Science and Technology Faculty of Mechanical Engineering and Robotics Department of Power Systems and Environmental Protection Facilities Al. Mickiewicza 30, 30-059 Kraków, Poland |
| 2 | AGH University of Science and Technology Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering Department of Electrical and Power Engineering Al. Mickiewicza 30, 30-059 Kraków, Poland |
Publication date: 2019-06-30
Eksploatacja i Niezawodność – Maintenance and Reliability 2019;21(2):282–288
KEYWORDS
ABSTRACT
The paper is a result of a synergic cooperation of two academic teams, i.e. power engineering and mechanical teams, and a distribution system operator. A real 15 kV overhead line exposed to a catastrophic load of ice and rime was analyzed and three solutions to
improve the reliability of the tested object in such conditions were examined. Authors considered: shortening the length of the line
spans, heating the main line with increased current and rebuilding the overhead line to a cable line. The researches worked out a
FEM model taking into account the newest normatives, simulated the model, experimentally increased the load on the real line with
measured wire temperature, and performed multi-variant calculations to determine indicators of reliability, i.e. SAIDI and SAIFI.
The analyses were followed by conclusions thanks to which the reliability of power lines exposed to catastrophic icing could be
increased. These inferences should be considered and applied by all distribution system operators in Poland.
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