Title Temperature characteristic of DC ice- melting conductor
Author Fan Songhai; Jiang Xingliang; Sun Caixin; Zhang Zhijin; Shu Lichun
Author Affil Fan Songhai, Chongqing University, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing, China. Other: U. S. Army Engineer Research and Development Center, Cold Regions Research and Engineering Laboratory
Source Anti-icing and de-icing techniques, edited by M. Farzaneh and C.C. Ryerson. Cold Regions Science and Technology, 65(1), p.29- 38, . Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165-232X
Publication Date Jan. 2011
Notes In English. Based on Publisher- supplied data; includes appendix GeoRef Acc. No: 309985
Index Terms ice; ice storms; mathematical models; models; power lines; simulation; structures; temperature; deicers; direct current; electrical currents; heating; infrastructure; physical models; protection
Abstract China is developing DC ice-melting method for the de-icing of overhead transmission lines after the ice storm in 2008. Melting ice apart, the Joule heat produced by DC heats the conductor. It is significant to investigate the temperature characteristic of the ice-melting conductors in order to protect the conductor from being damaged by overheating. This paper puts forward a model to simulate the temperature- rising process of ice-melting conductor, and the results have been investigated in the artificial climate chamber. Our research shows that the ice-melting process can be divided into two stages, namely pre-ice- shedding and post-ice-shedding, and temperature characteristics of conductor of the former is dissimilar from that of the latter. In the first stage, the direct reason of the conductor temperature-raising is air- gap, and conductor temperature is affected by ice thickness, while in the second stage, it is influenced by wind velocity and ambient temperature. The conductor temperature of both stages can be adjusted by changing current density.
URL http://hdl.handle.net/10.1016/j.coldregions.2010.02.012
Publication Type journal article
Record ID 65006867