10kV配电线路理论线损计算方法

采用基于平均电流的等值电阻法，以远程读取的 10kV线路首端有功、无功电量和配电变压器二次侧总表实际抄见电量为基础，分别建立以正、反两方向计算线路损耗的数学模型， 并对线损影响因素及线路导线损耗和配电变压器的电能损耗进行仿真分析。算例结果表明，反向数学模型的计算结果较准确反映了理论线损的真实值，同时，通过对比正、反向数学模型所得理论线损率的变化，研究了线路不明损耗对线损率的影响。

Method for theoretical line loss calculation of 10 kV distribution line

Adopting the equivalent resistance method based on average current, on the basis of theremote reading active and reactive electricity at the head of the 10 kV line, as well as the actual copy-ing electricity on the secondary side of distribution transformer , the mathematical models were estab-lished for calculating the electricity loss in both forward and backward directions. The case analysisshows that the results of the backward mathematical model accurately reflect the actual value of the .theoretical line loss, and by comparing the change of theoretical line loss rate calculated by the two mathematical models, the influence of unknown loss on line loss rate is studied.