CAJ | 학술논문

为研究应急负荷变动下高压单芯电缆的线芯温度响应特性,建立了应急负荷变动下高压单芯电缆线芯温度随时间变化的梯度函数,以110 kV交联聚乙烯单芯电缆为研究对象,设计了水中敷设、空气中敷设、土壤中直埋的3种条件下高压单芯电缆应急负荷变动的温升试验.结果表明:当高压电缆负荷发生应急变动时,线芯温度随时间的梯度变化受环境影响很大,其中空气敷设电缆线芯温度的变化梯度最大,水中敷设电缆线芯温度变化梯度最小,土壤敷设电缆线芯温度变化梯度介于前两者之间.在3种敷设条件下,电缆线芯温度的梯度变化都随应急变动负荷的增加而增大.
위연구응급부하변동하고압단심전람적선심온도향응특성,건립료응급부하변동하고압단심전람선심온도수시간변화적제도함수,이110 kV교련취을희단심전람위연구대상,설계료수중부설、공기중부설、토양중직매적3충조건하고압단심전람응급부하변동적온승시험.결과표명:당고압전람부하발생응급변동시,선심온도수시간적제도변화수배경영향흔대,기중공기부설전람선심온도적변화제도최대,수중부설전람선심온도변화제도최소,토양부설전람선심온도변화제도개우전량자지간.재3충부설조건하,전람선심온도적제도변화도수응급변동부하적증가이증대.
To study the response characteristic of HV single-core cable conductor temperature under emer-gency load, a gradient function of conductor temperature to time under emergency load was built. The temperature rise test of 110 kV XLPE single-core cable under emergency load change was carried out in terms of three conditions, which is laid under the water, in the air and in the soil respectively. The re-sults show that the conductor temperature gradient is seriously affected by the laying environment under emergency load. The conductor temperature gradient of the cable laid in the air is the biggest, while that laid under the water is the smallest, and that laid in the soil lies between. The conductor temperature gra-dient increases with the increase of emergency load in all three conditions.