Recent Progress and Design of Three-Phase Coaxial HTS Power Cable in Korea
Recent Progress and Design of Three-Phase Coaxial HTS Power Cable in Korea
复制标题
韩国三相同轴高温超导电力电缆的最新进展和设计
DOI：
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发表时间：
2019
影响因子：
1.8
通讯作者：
H. Yang
中科院分区：
文献类型：
--
作者：
Seok;H. Yang
高温超导电力电缆是近年来发展起来的一种新型电缆，与传统电缆相比具有许多优点。对于大电流容量，在HTS电缆的一个相位中需要两层或更多层。各相、各层半径的差异导致三相电流固有的不平衡和不均匀分布。这些结果必须通过合理设计多层三相同轴高温超导电缆的节距来最小化。本文基于提出的PSCAD/EMTDC器件和仿真方法，设计了多层三相同轴高温超导电缆的导电层，并对所设计电缆的特性进行了分析。研究了一种23 kV/60 MVA多层三相同轴高温超导电力电缆。多层三相同轴高温超导电缆的概念设计包括每一层的半径、每一相的层数以及电缆每一层的节距设计。采用阻抗匹配程序，通过调整节距长度和绕组方向，可以最大限度地减少电流不平衡，使电流在相位各层的分布均匀。分析了采用PSCAD/EMTDC器件的高温超导电缆的特性。在这个组件中，与电流和温度相关的高温超导电缆的动态电阻被添加到高温超导模型中。交流损耗是用一些方程来计算的。根据屏蔽层的材料特性计算了感应电流损耗。采用基于PSCAD/ emtdc的仿真方法对三相同轴高温超导电缆的三相故障进行暂态仿真。
High-temperature superconducting (HTS) power cables were developed recently and have several advantages over conventional cables. For high current capacity, two or more layers are required in one phase of the HTS cable. Differences in the radii between each phase and layer cause inherent imbalance and non-uniform current distribution of three-phase currents. These outcomes must be minimized by properly designing the pitches of multi-layer three-phase coaxial HTS cables. In this paper, the authors design the conduction layers of a multi-layer three-phase coaxial HTS cable and analyze the characteristics of the designed cable based on the proposed PSCAD/EMTDC component and simulation method. A 23 kV/60 MVA multi-layer three-phase coaxial HTS power cable is considered. The conceptual design of a multi-layer three-phase coaxial HTS cable includes the radii of each layer, the number of layers in each phase, and the pitch design of each layer of the cable. Using an impedance matching program, current imbalance can be minimized and current distribution can be made uniform in all layers of the phase by adjusting the pitch length and winding direction. The characteristics of HTS cables using the proposed PSCAD/EMTDC component are analyzed. In this component, the dynamic resistance of current- and temperature-dependent HTS cables is added to the HTS model. AC losses are calculated using the some equation. Induced current loss is calculated based on the material properties of the shield layer. A transient simulation is performed for a three-phase fault of the three-phase coaxial HTS cable using a PSCAD/EMTDC-based simulation method.