CAJ | 학술논문

电缆的输送容量随着大截面电缆的广泛应用而越来越大。在大电流作用下，电缆金具涡流损耗不能忽略。分析电缆金具涡流原理，建立大截面电缆固定金具的三维涡流场数学模型，在考虑边界条件和初始条件下，利用有限元法，计算单根电缆的金具涡流损耗模型。计算结果得出金具涡流损耗，分析磁感应强度和涡流损耗分布，探讨了金具间隙大小和金具厚度对金具涡流损耗的影响，结合仿真实验和工程实际提出了最佳的金具间隙大小和金具厚度。
전람적수송용량수착대절면전람적엄범응용이월래월대。재대전류작용하，전람금구와류손모불능홀략。분석전람금구와류원리，건립대절면전람고정금구적삼유와류장수학모형，재고필변계조건화초시조건하，이용유한원법，계산단근전람적금구와류손모모형。계산결과득출금구와류손모，분석자감응강도화와류손모분포，탐토료금구간극대소화금구후도대금구와류손모적영향，결합방진실험화공정실제제출료최가적금구간극대소화금구후도。
With the wide application of large cross -section power cables in China , the transmission capacity of the cable is al-so growing.Under the high current , the eddy current losses of fixed cleat cannot be ignored .The principle of eddy current of fixed cleat for power cable is analyzed , and a 3D eddy current mathematical model of fixed cleat for large cross -section power cable is established .Under the consideration of boundary and initial conditions , the eddy current losses of fixed cleat for single cable are calculated with finite element method ( FEM) .The eddy current losses of fixed cleat are obtained after the calcula-tion, and the distributions of magnetic induction intensity and eddy current losses are analyzed .And then the impacts of the clearance in cable fittings and their thickness on eddy current losses of fixed cleat are discussed .Finally, the best clearance in fittings and the best thickness are proposed combining with the simulation and the actual projects .