高压电缆导体动态温度分层计算法

Stratification for Dynamic Temperature of High Voltage Cable Conductor

针对当前采用传热学数值解法计算高压电缆导体动态温度(如有限差分法、有限元法、边界元法等)存在参数多、建模复杂等问题,提出采用分层法来细分热传导过程,并利用热传导方程推导出N元一次方程组进行近似求解。该方法计算过程简单,相关试验数据结果验证其适用于实际工程应用。

Aiming at problems of excessive parameters and complex modeling of dynamic temperature of high voltage cable conductor computed by numerical method for solving the heat transfer such as finite difference time domain method, finite element method and boundary element method, this paper proposes to subdivide heat conduction process by using stratifica- tion and deduce N equations to proceed approximation by making use of heat conduction equation, Practical application shows that this method is simple in calculation and the related testing data verifies its applicability for practical engineering application.