Patents by Inventor Gengfeng LI

Gengfeng LI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11768858
    Abstract: A method of a power user classification based on distributed K-means, a storage medium and a classification device are provided. The method includes: obtaining, by N load aggregators, power consumption data of power users managed by respective load aggregators; performing, by each load aggregator, a normalization operation on time series load data of the power users managed by the load aggregator; forming a N×N dimensional adjacency matrix A; performing K-means clustering on normalized time series load data, to obtain the respective centroids and user groups characterized by the respective centroids; sharing, by the respective load aggregators, the centroids and the number of users under the respective centroids based on the adjacency matrix A, and obtaining consistent centroids by multiple load aggregators; after an overall iteration ends, obtaining, by the respective load aggregators, the consistent centroids consistent with the K-means centroid based on global data, to realize user classification.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: September 26, 2023
    Assignees: XI'AN JIAOTONG UNIVERSITY, State Grid Jiangsu Electric Power Co. Ltd, Hohai University
    Inventors: Gengfeng Li, Yuxiong Huang, Liyin Zhang, Jiangfeng Jiang, Qirui Qiu, Shihai Yang, Xingying Chen, Xiaodong Cao, Kun Yu
  • Publication number: 20210406284
    Abstract: A method of a power user classification based on distributed K-means, a storage medium and a classification device are provided. The method includes: obtaining, by N load aggregators, power consumption data of power users managed by respective load aggregators; performing, by each load aggregator, a normalization operation on time series load data of the power users managed by the load aggregator; forming a N×N dimensional adjacency matrix A; performing K-means clustering on normalized time series load data, to obtain the respective centroids and user groups characterized by the respective centroids; sharing, by the respective load aggregators, the centroids and the number of users under the respective centroids based on the adjacency matrix A, and obtaining consistent centroids by multiple load aggregators; after an overall iteration ends, obtaining, by the respective load aggregators, the consistent centroids consistent with the K-means centroid based on global data, to realize user classification.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 30, 2021
    Inventors: Gengfeng LI, Yuxiong HUANG, Liyin ZHANG, Jiangfeng JIANG, Qirui QIU, Shihai YANG, Xingying CHEN, Xiaodong CAO, Kun YU
  • Publication number: 20210334658
    Abstract: The present disclosure provides a method for performing clustering on operation modes of a power system based on a sparse autoencoder. The method includes: obtaining related data of the power system; setting a training parameter, a number of hidden layers, and a number of neurons; training an autoencoder model using the related data and extracting a topological structure and a weight matrix from the model; performing cluster analysis to obtain a number of typical scenarios; and performing decoding to obtain original data at centers of respective scenarios. The present disclosure can achieve fast selection and dimensionality reduction of feature vectors representing operation modes of a power system. In view of this, the present disclosure provides a novel idea and method for selecting a feature vector representing an operation mode of a power system and generating a typical operation scenario.
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Inventors: Gengfeng LI, Yuxiao LEI, Chunlei XU, Xiaohu ZHANG, Di SHI, Jiangfeng JIANG, Yuxiong HUANG, Yuming PENG, Zhaohong BIE