Investigations on AC losses of power cables by simulation and measurement

通过模拟和测量研究电力电缆的交流损耗

• 批准号: 289991964
• 负责人: Professor Dr.-Ing. Ronald Plath
• 金额: --
• 依托单位: Fachgebiet Hochspannungstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289991964?language=en
• 关键词: Investigations; AC; losses; power; cables

With the expansion of high-voltage grids all around the globe, the use of power cables with large cross sections (larger than 1000 mm²) is rapidly increasing. In addition to the DC resistance of a cable, which is defined by the cross sections, the used material and the length of the conductor, a significant amount of AC losses can arise, when operating the cable at power frequency. With regard to the cables installed in the future, minor design optimizations can already lead to immense savings in power dissipation and hence in CO2 emissions.The AC losses are influenced by different design parameters. Due to the complex structure of the conductor, it is still challenging to reliably predict the performance of new conductor designs. The goal of this research project is the further development of tools, which are able to analyze these cables. In close cooperation of both working groups, simulations, analytical considerations and measurements will be refined and specifically tailored to power cables. In a first step comparative studies of recent calculation methods are performed, to subsequently enhance the well-known finite element analysis goal-oriented. At the same time present power cable conductors are examined by measurement, so that the results of both, measurement and simulation, validate each other.The results include an improved fundamental understanding of the interaction between various loss mechanisms in high-voltage power cable conductors. Moreover, the developed tools are expected to be suitable to derive energy saving design optimizations and to reliably predict the performance of any complex conductor.

随着高压电网在全球范围内的扩展，大截面（大于1000 mm²）电力电缆的使用正在迅速增加。除了电缆的直流电阻（由横截面、所用材料和导体长度决定）外，在工频下操作电缆时，还会产生大量的交流损耗。对于未来安装的电缆，微小的设计优化已经可以大大节省功耗，从而减少二氧化碳排放。交流损耗受不同设计参数的影响。由于导体的复杂结构，可靠地预测新导体设计的性能仍然是一项挑战。这个研究项目的目标是进一步开发能够分析这些电缆的工具。在两个工作组的密切合作下，模拟、分析考虑和测量将得到改进，并专门针对电力电缆进行定制。在第一步，比较研究了最近的计算方法进行，随后加强了众所周知的有限元分析的目标导向。同时对现有电力电缆导体进行了测量检验，使测量和仿真结果相互验证。结果包括提高了对高压电力电缆导体中各种损耗机制之间相互作用的基本理解。此外，开发的工具有望适用于推导节能设计优化，并可靠地预测任何复杂导体的性能。