全海深垂直多芯电缆的建模

Modeling of Deepwater Vertical Multi-Core Cable

为了研究全海深环境下,垂直多芯电缆电能传输过程中的电压压降及能量流失情况,建立了精细化的垂直多芯电缆模型。模型基于分布参数理论,对电缆进行分段建模,每一段用π型等效电路表示。电缆参数的计算计及深海环境参数的变化,且根据内部导体的不同位置关系分类讨论。利用matlab实现参数矩阵的计算,并通过EMTP的支路计算引擎辅助计算出沿线电压电流响应。通过实验验证了模型有很好的拟合效果,仿真计算结果与实测结果有很高的吻合度。

In order to study the voltage drop and energy loss during the power transmission of vertical multi-core cable in the deepwater environment, a refined vertical multi-core cable model was built in this paper. The model was based on distributed parameter theory, and the cable was modeled in sections, each segment was represented by a π-type equivalent circuit. The calculation of the cable parameters took into account changes in the parameters of the deepwater environment and was classified according to the different positional relationships of the internal conductors. The article used Matlab to calculate the parameter matrix, and calculated the voltage and current response along the line through the EMTP branch calculation engine. Finally, the model was proved to have a good fitting effect, and the simulation results were in good agreement with the measured results.