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Modelling precipitation cooling of overhead conductors

机译:模拟架空导线的沉淀冷却

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摘要

This paper presents a precipitation-based conductor cooling model for use in power line ampacity rating applications and line temperature calculations. It is aimed at better modelling of a conductor's temperature by incorporating the line cooling caused by precipitation falling onto power lines. The expanded thermal model quantifies the additional gain of current-carrying capacity for power transmission networks incorporating advanced Dynamic Thermal Circuit Rating systems. The precipitation cooling model is verified against observations made by a power transmission utility using a commercial line current and temperature sensor clamped onto an actual power transmission line. The accuracy of the precipitation model is assessed both quantitatively using standard error measures, and qualitatively in terms of fit of the model to real world data. The precipitation-based cooling extension shows a significant improvement over IEEE Std. 738-2006 in the modelled accuracy of the conductor temperature. It suggests a substantial increase in available ampacity during periods of precipitation.
机译:本文提出了一种基于降水的导体冷却模型,用于电力线载流量额定值应用和线温度计算。它旨在通过合并由于降落到电力线上而引起的线路冷却来更好地模拟导体的温度。扩展的热模型量化了包含先进动态热电路额定值系统的输电网络载流能力的额外增益。通过使用固定在实际输电线路上的商用线路电流和温度传感器,根据输电公司的观察结果验证了降水冷却模型。降水模型的准确性既可以使用标准误差度量进行定量评估,也可以通过模型与实际数据的拟合进行定性评估。基于降水的冷却扩展比IEEE Std有了显着改进。 738-2006中导体温度的建模精度。这表明在降水期间可用载流量大大增加。

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