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1.智能网络与网络安全教育部重点实验室(西安交通大学),陕西省西安市 710049
2.国网陕西省电力公司西安供电公司,陕西省西安市 710048
刘家丞(1996—),男,硕士研究生,主要研究方向:分布式机器学习、电力大数据。E-mail:xjsk1016tansuo@stu.xjtu.edu.cn
吴江 (1980—),男,通信作者,博士,副教授,博士生导师,主要研究方向:电力系统优化调度、分布式机器学习算法。E-mail:jiangwu@xjtu.edu.cn
刘鹏远(1993—),男,硕士,主要研究方向:电力大数据、智能电网。E-mail:lpy1001@stu.xjtu.edu.cn
收稿日期:2021-07-08,
修回日期:2022-02-25,
网络出版日期:2022-05-26,
纸质出版日期:2022-08-10
移动端阅览
刘家丞,吴江,刘鹏远等.面向负荷特征分析的地理分布式协同聚类方法[J].电力系统自动化,2022,46(15):112-120.
LIU Jiacheng,WU Jiang,LIU Pengyuan,et al.Geo-distributed Collaborative Clustering Method for Load Characteristic Analysis[J].Automation of Electric Power Systems,2022,46(15):112-120.
刘家丞,吴江,刘鹏远等.面向负荷特征分析的地理分布式协同聚类方法[J].电力系统自动化,2022,46(15):112-120. DOI: 10.7500/AEPS20210708008.
LIU Jiacheng,WU Jiang,LIU Pengyuan,et al.Geo-distributed Collaborative Clustering Method for Load Characteristic Analysis[J].Automation of Electric Power Systems,2022,46(15):112-120. DOI: 10.7500/AEPS20210708008.
能源互联网架构下,用户数据传输延迟和电力公司管理规定促使电力数据中心在全国各地建立,电力数据因而呈现地理分布式,对此研究了在地理分布式情景下的用户负荷特征聚类算法。首先,对于地理节点内用户负荷的特征分析,在采用主成分分析与负荷指标特征加权组合算法的基础上,提出了考虑密度峰值信息的
K
-means算法,并为地理节点间的信息共识提供了支撑。其次,针对用户需求的地理分布式网络化感知结构,构建了考虑特征迁移的分布式聚类模型框架,提出将节点局部信息通过参数共识得到全局聚类模型的分布式
K
-means算法,在节点间仅传递公开信息的前提下,实现了用户特征的全局聚类。最后,通过爱尔兰、中国北方部分城市的负荷数据对模型及算法进行验证。结果显示,分布式
K
-means能利用全局信息、考虑不同区域的差异来更好地识别典型用电曲线,并且算法具有较好的可迁移性。
Under the framework of Energy Internet. The transmission delay of user data and management requirements of power grid companies promote the establishment of power data centers all over the country. Therefore
the power data naturally presents geographic distribution. In this regard
the clustering algorithm of user load characteristics in geo-distributed scenarios is studied. Firstly
for the characteristic analysis of user load in geographical nodes
based on the principal component analysis (PCA)-load index feature weighted combination algorithm
a
K
-means algorithm considering the density peak information is proposed
which provides the support for information consensus among geographical nodes. Secondly
according to the geo-distributed network perception structure of user requirement
the framework of distributed clustering model considering feature migration is constructed
and the distributed
K
-means algorithm is proposed to obtain the global clustering model by using the local information of nodes through parameter consensus
which realizes the global clustering of user characteristics on the premise that only public information is transmitted between nodes. Thus
the global clustering of user characteristics is realized. Finally
the model and algorithm are verified by user load data from the cities in Ireland and northern China. The results show that distributed
K
-means can use global information and consider differences in different regions to better identify typical power consumption curves
and the algorithm has better transferability.
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