Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title Evaluation of temperature rising characteristics for catenary deicing system through heating test
Authors 정호성(Hosung Jung) ; 김주욱(Joouk Kim) ; 김형철(Hyungchul Kim)
DOI https://doi.org/10.5370/KIEE.2021.70.9.1398
Page pp.1398-1404
ISSN 1975-8359
Keywords Catenary deicing system; Deicing current; Heating test; Overhead catenary system; Temperature rising characteristics
Abstract This paper analyzes the temperature rising characteristics of the deicing catenary system in winter. For the composition of the deicing system, the deicing system is constructed according to the combination of various trolley wires and messenger wires applied at Korea. To compare of temperature rising characteristics, the current distribution ratio between trolley wire and messenger wire are measured and the wire temperature is measured according to the deicing current using a catenary heating test device. In case of current distribution ratio test, the current distribution ratio is measured in 82.1%: 18.9% similar to the theoretical ratio in DC supplying. As a result of temperature rising test, the temperature of Cu 150 ㎟ is increased by 1.26 °C/m at a wind speed of 0.5 m/s and 0.92 °C/m at 2.0 m/s when supplying DC 350 A, And in case of Bz 65 ㎟, when DC 95 A is supplied, the temperature rose at 0.74° C/m at 0.5 m/s, and 0.56 °C/m at 2.0 m/s. In the comparison between the theoretical equation and test result, the difference is at most 0.7 ℃. Therefore, it is confirmed that it would be appropriate to use the theoretical equation in the design of the deicing system.