Riba Jordi-Roger, Liu Yuming, Moreno-Eguilaz Manuel, Sanllehí Josep
Electrical Engineering Department, Universitat Politècnica de Catalunya, Rambla Sant Nebridi 22, 08222 Terrassa, Spain.
SBI Connectors, Albert Einstein, 5, 08635 Sant Esteve Sesrovires, Spain.
Materials (Basel). 2022 Sep 4;15(17):6143. doi: 10.3390/ma15176143.
Dynamic line rating (DLR) is a method that focuses on dynamically determining the maximum allowable current of power lines, while ensuring they operate within safe limits. DLR needs to monitor the temperature and current of the line in real-time, as well as the weather variables in the surroundings of the power line. DLR approaches also require determining the AC resistance of the power line conductors, which is a key parameter that enables it to determine Joule and core losses. This paper presents an approach for an on-line alternating current (AC) resistance estimation of aluminum conductor steel-reinforced (ACSR) conductors to determine the DLR capability of such conductors from real-time conductor and meteorological parameter measurements. For this purpose, conductors with one, two and three layers of aluminum strands are analyzed in detail. Based on the experimental results presented in this paper, two possible approaches are proposed.
动态线路额定值（DLR）是一种专注于动态确定电力线路最大允许电流，同时确保其在安全范围内运行的方法。DLR需要实时监测线路的温度和电流，以及电力线路周围的气象变量。DLR方法还需要确定电力线路导体的交流电阻，这是一个关键参数，可用于确定焦耳损耗和铁芯损耗。本文提出了一种用于估算钢芯铝绞线（ACSR）导体在线交流电阻的方法，以便根据实时导体和气象参数测量结果确定此类导体的DLR能力。为此，详细分析了具有一层、两层和三层铝绞线的导体。基于本文给出的实验结果，提出了两种可能的方法。
