LIAO Zhiwei,XIE Xunkai,ZHENG Guangyu,et al.Phase Identification of Low-voltage Distribution Station Area Based on Morphological Characteristic Clustering of Voltage Curves[J].Automation of Electric Power Systems,2023,47(7):142-149.
LIAO Zhiwei,XIE Xunkai,ZHENG Guangyu,et al.Phase Identification of Low-voltage Distribution Station Area Based on Morphological Characteristic Clustering of Voltage Curves[J].Automation of Electric Power Systems,2023,47(7):142-149. DOI: 10.7500/AEPS20220510008.
Phase Identification of Low-voltage Distribution Station Area Based on Morphological Characteristic Clustering of Voltage Curves
Aiming at the difficulty of user phase identification due to the concentrated distribution of voltage curves in low-voltage (LV) distribution station areas
this paper proposes a phase identification method based on morphological characteristic clustering of voltage curves in LV distribution station areas. Firstly
the piecewise aggregate approximation (PAA) is used to segment the voltage curves of three phases on the LV side of the distribution transformer and the LV users
so as to extract the main feature information reflecting the overall distribution and reduce the interference of redundant noise. Besides
the introduction of the first-order derivatives and dynamic time warping (DTW) deepens the analysis of the local trend change of each segmented series and integrates it into the distance measurement based on PAA
which not only makes up for the lack of consideration of the trend change information of the voltage curves by the mean value feature
but also reduces the time complexity of DTW. Secondly
this distance measurement is used to determine the similarity of voltage feature series and improve the similarity measurement of traditional
k
-means clustering
and to construct the phase identification model of LV distribution station areas. Finally
the effectiveness of the proposed method is verified by the analysis of a practical distribution station area.
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references
HOSSEINI Z S , KHODAEI A , PAASO A . Machine learning-enabled distribution network phase identification [J]. IEEE Transactions on Power Systems , 2021 , 36 ( 2 ): 842 - 850 .
GAO Zepu , ZHAO Yun , YU Yilan , et al . Low-voltage distribution network topology identification method based on knowledge graph [J]. Power System Protection and Control , 2020 , 48 ( 2 ): 34 - 43 .
QIAN C , WANG Z , ZHANG J . A new algorithm of topology analysis based on PMU information [C]// 2010 5th International Conference on Critical Infrastructure (CRIS) , September 20-22 , 2010 , Beijing, China : 1 - 5 .
LUAN Wenpeng , YU Yixin , WANG Bing . AMI data analytics [J]. Proceedings of the CSEE , 2015 , 35 ( 1 ): 29 - 36 .
ARYA V , SEETHARAM D , KALYANARAMAN S , et al . Phase identification in smart grids [C]// 2011 IEEE International Conference on Smart Grid Communications (SmartGridComm) , October 17-20 , 2011 , Brussels, Belgium : 25 - 30 .
PAPPU S J , BHATT N , PASUMARTHY R , et al . Identifying topology of low voltage distribution networks based on smart meter data [J]. IEEE Transactions on Smart Grid , 2018 , 9 ( 5 ): 5113 - 5122 .
FENG Renhai , ZHAO Zheng , XIE Sheng , et al . Topology identification for low voltage network based on principal component analysis and convex optimization [J]. Journal of Tianjin University (Science and Technology) , 2021 , 54 ( 7 ): 746 - 753 .
ZHANG M Z , LUAN W P , GUO S , et al . Topology identification method of distribution network based on smart meter measurements [C]// 2018 China International Conference on Electricity Distribution (CICED) , September 17-19 , 2018 , Tianjin, China : 372 - 376 .
QIAN C , WANG M , GAO D , et al . Topology identification method for primary distribution network with limited smart meter data [C]// 2021 6th Asia Conference on Power and Electrical Engineering (ACPEE) , April 8-11 , 2021 , Chongqing, China : 1611 - 1616 .
LI Keming , JIANG Yaqun , HUANG Shifu , et al . Topology identification method of a low-voltage distribution station area based on DTW distance and cluster analysis [J]. Power System Protection and Control , 2021 , 49 ( 14 ): 29 - 36 .
LIU Su , HUANG Chun , LI Keming , et al . Phase identification method for single-phase user based on adaptive piecewise cloud model [J]. Automation of Electric Power Systems , 2022 , 46 ( 3 ): 42 - 49 .
TANG Jie , CAI Yongzhi , ZHOU Lai , et al . Data-driven based identification method of feeder-consumer connectivity in low-voltage distribution network [J]. Automation of Electric Power Systems , 2020 , 44 ( 11 ): 127 - 134 .
LUO Junteng , ZHANG Jianmin , YAO Li , et al . Modeling and application of phase identification optimization for low-voltage customer based on voltage and power data [J]. Automation of Electric Power Systems , 2021 , 45 ( 7 ): 123 - 131 .
ZHOU L , LI Q H , ZHANG Y J , et al . Consumer phase identification under incomplete data condition with dimensional calibration [J]. International Journal of Electrical Power & Energy Systems , 2021 , 129 : 106851 .
SONG Junying , CUI Yiwei , LI Xinran , et al . Load curve clustering method based on Euclidean dynamic time warping distance and entropy weight [J]. Automation of Electric Power Systems , 2020 , 44 ( 15 ): 87 - 94 .
LI Hailin , LIANG Ye . Similarity measure based on numerical symbolic and shape feature for time series [J]. Control and Decision , 2017 , 32 ( 3 ): 451 - 458 .
ARTHUR D , VASSILVITSKII S . K-means++: the advantages of careful seeding [C]// Proceedings of the Eighteenth Annual ACM-SIAM symposium on Discrete algorithms , January 7-9 , 2007 , New Orleans, USA : 1027 - 1035 .
LI Kun , ZHOU Lai , ZHANG Yongjun , et al . Credibility evaluation of topology identification results in low-voltage distribution network based on quality of measured data [J]. Automation of Electric Power Systems , 2021 , 45 ( 17 ): 99 - 107 .
LIAN Zikuan , YAO Li , LIU Shengyuan , et al . Phase and meter box identification for single-phase users based on t -SNE dimension reduction and BIRCH clustering [J]. Automation of Electric Power Systems , 2020 , 44 ( 8 ): 176 - 184 .