现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2014年
8期
9-11
,共3页
XLPE电缆%线芯温度%热路模型%暂态线芯温度
XLPE電纜%線芯溫度%熱路模型%暫態線芯溫度
XLPE전람%선심온도%열로모형%잠태선심온도
XLPE cable%cable conductor temperature%thermal circuit model%transient conductor temperature
为实时掌握交联聚乙烯（XLPE）配电电缆的运行状态，提高其供电可靠性，对电缆线芯温度的计算方法进行了研究。针对配电电缆敷设距离较短的特点，运用集中参数法表征XLPE电缆的各层结构，建立了单芯电缆集中参数稳态等效热路模型，在此基础上推导出线芯温度与载流量的计算公式，简化了分析与计算。实验结果表明该计算方法具有较高的精度，同时对考虑暂态过程的电缆线芯温度计算方法进行了讨论与分析，为电缆运行状态的在线监测提供了参考。
為實時掌握交聯聚乙烯（XLPE）配電電纜的運行狀態，提高其供電可靠性，對電纜線芯溫度的計算方法進行瞭研究。針對配電電纜敷設距離較短的特點，運用集中參數法錶徵XLPE電纜的各層結構，建立瞭單芯電纜集中參數穩態等效熱路模型，在此基礎上推導齣線芯溫度與載流量的計算公式，簡化瞭分析與計算。實驗結果錶明該計算方法具有較高的精度，同時對攷慮暫態過程的電纜線芯溫度計算方法進行瞭討論與分析，為電纜運行狀態的在線鑑測提供瞭參攷。
위실시장악교련취을희（XLPE）배전전람적운행상태，제고기공전가고성，대전람선심온도적계산방법진행료연구。침대배전전람부설거리교단적특점，운용집중삼수법표정XLPE전람적각층결구，건립료단심전람집중삼수은태등효열로모형，재차기출상추도출선심온도여재류량적계산공식，간화료분석여계산。실험결과표명해계산방법구유교고적정도，동시대고필잠태과정적전람선심온도계산방법진행료토론여분석，위전람운행상태적재선감측제공료삼고。
To monitor the running state and improve the power supply reliability of XLPE cable,the calculation method of XLPE cable conductor temperature is researched in this paper. To simplify the analysis and calculation,the lumped parameter method is used to character each layer structure of the cable,the steady-state thermal circuit model of the lumped parameter is established according to the characteristics of short laying distance of the power distribution cable,and then the formula of con-ductor temperature and carrying capacity is derived. The effectiveness of the method is verified by experimental analysis. The cal-culation method of conductor temperature considering the transient process is discussed. It provided a reference for on-line moni-toring of running status of the cable.
