| Title |
A Study on the Thermal Analysis of Indirect Water Cooled Power Cables Laid within Trough devided into Several Sub-Sections |
| Authors |
문영현(Moon, Young-Hyun) ; 김백(Kim, Baik) ; 이태식(Lee, Tae-Shik) |
| Keywords |
열해석 ; 전력케이블 ; 트로프 ; 간접수냉 ; 지중영역 Thermal Analysis ; Power Cable ; Trough ; Indirect Water Cooled ; Underground Area |
| Abstract |
As the underground area of the metropolitan becomes denser recently, an introduction of forced cooling system is under study to maximize the carrying capacity of existing cables in tunnels. Indirect water cooling system laid within trough will probably be adopted for the next 345KV class underground power cables in this country. The system covers a distance of 1.5-3.0Km for one water cooling interval and one water cooling interval is composed of several sub-sections that have different thermal analysis conditions. Thus the distribution of temperature in each sub-section is described by different conditions in general. In this paper a method that can accurately match the temperature of the coolant in the boundary between sub-sections has been suggested. An algorithm to find the temperature distributions effectively in the thermal system has also been presented. A computer program using this method has been tested in a smaple system and the results have shown the usefulness of this program. |