Application of advanced mathematical methods to thermal analysis of electric power cables

本研究方案涉及应用先进的数学技术来计算电力电缆的电流能力。以下是需要解决的领域：1.不同负荷、不同类型电缆组的最佳载流量。2.发展在“公用设施人行道”装置中敷设的电缆的定额方法。这是一种正在开发的新的非开挖技术，目前还没有可用的载流量计算方法。3.制定每相多根电缆的电路安装指南。将应用优化和人工智能方法。4.任意启动温度下的暂态额定计算算法。所有现有的方法都是基于环境或稳态的起始温度。在实践中，对于反映现场测量的任意起始温度，需要进行紧急计算。5.确定大护套环流接触电缆外部热阻的高级数值研究。

This research proposal deals with the application of advanced mathematical techniques for calculation of the current currying capability of electric power cables. The following are the areas to be addressed: 1. Optimal ampacities for groups of unequally loaded, dissimilar cables. 2. Development of rating methods for cables laid in a "utility sidewalk" installation. This is a new trenchless technology that is being developed and there are no ampacity calculation methods available. 3. Development of installation guides for circuits with multiple cables per phase. Optimization and artificial intelligence methods will be applied. 4. Algorithms for transient rating calculations with arbitrary starting temperatures. All existing methods are based on either ambient or steady-state starting temperatures. In practice, emergency calculations are required for arbitrary starting temperatures reflecting in-situ measurements. 5. Advanced numerical studies to determine the external thermal resistance of touching cables with heavy sheath circulating currents.