全球能源互联网（英文）2022，Vol.5Issue(6)：590-603,14.DOI:10.1016/j.gloei.2022.12.002
净负荷数据下的居民光伏容量估算和功率分解
Residential PV capacity estimation and power disaggregation using net metering measurements
摘要
Abstract
As the intermittency and uncertainty of photovoltaic (PV) power generation poses considerable challenges to the power system operation, accurate PV generation estimates are critical for the distribution operation, maintenance, and demand response program implementation because of the increasing usage of distributed PVs. Currently, most residential PVs are installed behind the meter, with only the net load available to the utilities. Therefore, a method for disaggregating the residential PV generation from the net load data is needed to enhance the grid-edge observability. In this study, an unsupervised PV capacity estimation method based on net metering data is proposed, for estimating the PV capacity in the customer's premise based on the distribution characteristics of nocturnal and diurnal net load extremes. Then, the PV generation disaggregation method is presented. Based on the analysis of the correlation between the nocturnal and diurnal actual loads and the correlation between the PV capacity and their actual PV generation, the PV generation of customers is estimated by applying linear fitting of multiple typical solar exemplars and then disaggregating them into hourly-resolution power profiles. Finally, the anomalies of disaggregated PV power are calibrated and corrected using the estimated capacity. Experiment results on a real-world hourly dataset involving 260 customers show that the proposed PV capacity estimation method achieves good accuracy because of the advantages of robustness and low complexity. Compared with the state-of-the-art PV disaggregation algorithm, the proposed method exhibits a reduction of over 15％ for the mean absolute percentage error and over 20％ for the root mean square error.关键词
居民光伏容量估计/功率分解/净负荷/表后光伏Key words
Behind-the-meter/Residential photovoltaic/Capacity estimation/Power disaggregation/Net metering引用本文复制引用
刘博,田建民,栾文鹏,高毅,王晓辉,罗帅..净负荷数据下的居民光伏容量估算和功率分解[J].全球能源互联网（英文）,2022,5(6):590-603,14.基金项目
This work was jointly supported by the Science and Technology Project of State Grid Corporation of China(No.5400-202112507A-0-5-ZN),and the National Nature Science Foundation for Young Scholars of China(No.52107120). （No.5400-202112507A-0-5-ZN）
