基于典型负荷曲线的配电网线损计算方法研究

中压配电网线损率计算面临所需数据多、数据采集量大的主要问题。自动化水平的提高可以为中压配电网线损率计算提供一定的数据，但收集到的数据质量参差不齐。基于采集到电量数据，首先，根据日负荷分类标幺化曲线和比例系数得到配变的实际日负荷标幺化曲线；其次，利用配变的实际日负荷标幺化曲线和配变的实际日用电量形成配变的实际日负荷曲线，得到配变的实际日负荷有功功率曲线和无功功率曲线。在此基础上，利用前推回代法得到中压配电网的日线损值，实现中压配电网损耗的精确化计算。最后，利用某地区样本数据验证了所提方法的有效性、精确性和合理性。

Calculation Method of Distribution Line Loss Based on Typical Load Curve

More data and a large amount of data collection is the main problem faced by medium voltage distribution network in line loss rate calculation. The improvement of automation level can provide certain data for the medium voltage distribution network in calculating the line loss rate， but the quality of the collected data is uneven. Based on the collected electricity data， firstly，the actual daily load normalization curve for distribution transformer is obtained according to daily load classification normalization curve and proportional coefficient. Secondly，the active power curve and reactive power curve of the actual daily load of the distribution transformer is obtained by using the actual daily load normalization curve and the actual daily load curve formed by the electricity consumption. On this basis， the daily line loss value of the medium voltage distribution network is obtained with forward-backward sweep method， realizing the accurate calculation of the loss of the medium voltage distribution network. Finally， the validity， accuracy and rationality of the proposed method is verified by using sample data from a certain region.