摘要
低压配电台区的理论线损计算对配电网降损及改善电能质量至关重要,但由于用户用电数据在采集、传输等环节会出现缺失,从而无法精确计算线损。为获得台区理论线损计算所需的完整数据,该文提出一种基于张量的多用户缺失数据补全模型。首先,对台区缺失数据的特征进行分析,构建该台区的标准化缺失张量。然后,考虑用户数据特性和多用户数据多维内在相关性,利用补全张量的低秩性建立模型,用交替方向乘子法迭代求解该模型。最后,对台区用户数据随机丢失和整天丢失2种情况分别用所提方法进行缺失数据补全。算例结果表明,该方法适用于实际缺失情况,能准确地补全台区缺失数据值。
The calculation of the theoretical line loss in the transformer district is significant for the distribution system to reduce the loss and improve the power quality. However, due to the loss of power consumption data in the collection, transmission and other links, it is impossible to accurately calculate the line loss. In order to obtain the complete data required for the theoretical line loss calculation, a tensor-based multi-user missing data completion model was proposed. Firstly, the paper analyzed the characteristics of the missing data in the station area and constructed the normalized missing tensor in the station area. Then, considering the characteristics of user data and the multi-dimensional intrinsic correlation of multi-user data, the model was established by the low rank of the complement tensor, and the alternating direction method of multipliers(ADMM) was used to solve the model iteratively. Finally, the missing data completion was performed by the proposed method for the random element loss and all day loss of the user data in the district. The results of the example show that the method is suitable for the actual missing situation and can accurately fill the missing data in the low-voltage station area.
作者
赵洪山
寿佩瑶
马利波
ZHAO Hongshan;SHOU Peiyao;MA LiBo(Hebei Key Laboratory of Distributed Energy Storage and Micro-grid(North China Electric Power University),Baoding 071003,Hebei Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第22期7328-7336,共9页
Proceedings of the CSEE
关键词
智能配电网
低压台区
缺失数据补全
张量补全
smart distribution systems
transformer district
missing data completion
tensor completion
