AI 中文总结
研究利用IEEE - 738标准对795 kcmil ACSR Drake导线的DLR进行参数灵敏度分析，涵盖多运行点。分析了风与温度对DLR的影响，通过皮尔逊相关分析和回归模型得出相关结论，为基于DLR的输电系统规划和评估提供指导。
AI 中文摘要
动态线路额定值（DLR）是一种提升输电线路容量利用率的新技术。目前尚不清楚重要环境参数的测量不确定性对DLR计算有多大影响。本文利用IEEE - 738标准，对795 kcmil ACSR Drake导线的DLR进行了系统的参数灵敏度分析。DLR计算涵盖832个运行点，包括昼夜太阳场景、晴朗/非晴朗大气透明度条件、0至15.25米/秒的风速以及15至50摄氏度的环境温度。灵敏度分析表明，在较高环境温度下，风灵敏度趋于降低，而温度灵敏度随风速增加。皮尔逊相关分析显示DLR与环境温度呈强负线性关联，与风速呈强正线性关联。回归模型纳入了风和温度的个体及交互效应，解释了所有情况下超过93%的DLR变异性。这些观察结果为基于DLR的输电系统的运行规划和不确定性评估提供了指导。
英文摘要
Dynamic Line Rating (DLR) is a novel technique that enhances the utilization of transmission line capacity. It is nevertheless unclear how much measurement uncertainty in important environmental parameters affects the DLR calculation. Using the IEEE-738 standard, this paper presents a systematic parametric sensitivity analysis of DLR for a 795 kcmil ACSR Drake conductor. The DLR computation encompasses 832 operating points which includes daytime/nighttime solar scenarios, clear/non-clear atmospheric clearness conditions, wind speeds ranging from 0 to 15.25 m/s, and ambient temperatures between 15 and 50 degrees Celsius. According to sensitivity analysis, wind sensitivity tends to decrease at higher ambient temperatures, whereas temperature sensitivity tends to increase with wind speed. Pearson correlation analysis indicates a strong negative linear association between DLR and ambient temperature, and a strong positive linear association with wind speed. A regression model incorporates both individual and interactive effects of wind and temperature, and explains over 93% of the observed DLR variability across all cases. Finally, the observations serve as a guide for operational planning and uncertainty assessment in DLR-based transmission systems.
