基于计量自动化系统的配电网线损特征及影响因素分析

配电网的线损率是一项重要的综合性技术经济指标。为便于线损管理，基于计量自动化系统的数据，以东莞某实际10 kV配电网为例对线损的特征及其影响因素进行研究。首先对线损的月度变化特征及其构成情况展开分析，根据相关系数揭示供电量、平均负荷系数、最小负荷系数、形状系数和功率因数等因素对线损的影响情况；进一步对该月度的工作日和节假日的线损情况进行分析，揭示两者的特征差异及其原因。最终形成月-日-时三个时间维度的线损特征及其影响因素分析体系，可以较为全面地反映线损的变化特性，并实现各种影响因素的定量分析。

Analysis of Line Loss Characteristics and Influencing Factors of Distribution Network Based on Metrological Automation System

The line loss rate is an important comprehensive index of technology and economy of distribution network. In order to facilitate line loss management, this paper takes an actual 10kV distribution network in Dongguan as an example to study the characteristics of line loss and its influencing factors based on the data of metrological automation system. Firstly, the monthly variation characteristics and the composition of the line loss are analyzed, and the influence of power supply, average load factor, minimum load factor, shape factor and power factor on line loss is revealed by correlation coefficient. The line loss of the monthly working days and holidays are further analyzed, revealing the differences of the characteristics of the two and the causes. Finally, the analysis system of the line loss characteristics and the influencing factors in three time dimensions is established. In this way, the change characteristics of line loss can be reflected fully. The various factors of line loss also can be analyzed quantitatively.