CAJ | 학술논문

导线的电气性能之一表现为导线的温升情况，从理论出发计算35 kV老旧导线与新线的载流温升，并通过试验测试导线的实际温升情况，探究老旧导线的电气性能。理论结果表明：分析得出新线的辐射散热功率比老旧导线少46%左右。当载流量低于150 A时，温升由高到低的顺序为：带有防振锤的老旧导线、老旧导线、新线；当载流量大于150 A时，温升由高到低的顺序为：老旧导线、带有防振锤的老旧导线、新线。试验结果表明：对于LGJ70/10导线而言，在相同的电流值下，新线的温升比老旧导线的温升低11%左右。以理论和试验相结合分析得出：老旧导线的辐射散热功率快于新线是温度低的主要影响因素。
도선적전기성능지일표현위도선적온승정황，종이론출발계산35 kV로구도선여신선적재류온승，병통과시험측시도선적실제온승정황，탐구로구도선적전기성능。이론결과표명：분석득출신선적복사산열공솔비로구도선소46%좌우。당재류량저우150 A시，온승유고도저적순서위：대유방진추적로구도선、로구도선、신선；당재류량대우150 A시，온승유고도저적순서위：로구도선、대유방진추적로구도선、신선。시험결과표명：대우LGJ70/10도선이언，재상동적전류치하，신선적온승비로구도선적온승저11%좌우。이이론화시험상결합분석득출：로구도선적복사산열공솔쾌우신선시온도저적주요영향인소。
The temperature rise of the conductor is one of the electrical properties of performance,Starting from the theoretical calculation of 35 kV old wires with a new line of current-carrying temperature rise,and through the actual situation of the test conductor temperature rise,explore old electrical properties of the wire. The theo-retical results show that the analysis of the new line of radiation power is about 46% smaller than the old wires. When carrying capacity is lower than 150 A,temperature rise by to small order greatly for:old wires with vibration hammer,old wires,new line;When carrying capacity is more than 150 A,temperature rise by to small order greatly for:old wires, old wires with vibration hammer, new line. Experimental results show that for LGJ70/10 wires, under the current value of the same, not to serve the temperature rise of a new temperature rise about 11% less than that of the old cable. To the combination of theoretical and experimental analysis:the radiation heat power of the old wire faster than new line is the main influence factors of low temperature.