Patents Assigned to STATE GRID CORPORATION OF CHINA CO., LTD.
  • Patent number: 11900031
    Abstract: Systems and methods for generating a load model having composite load components for electric power systems are disclosed which include acquiring state information at a bus of the electric power system, acquiring a training event record, and generating the load model by sequentially executing steps of determining a final load component composition for a predetermined composite load model structure referencing to both the state information and the training event record, and determining a plurality of final load parameters corresponding to the final load component composition and the predetermined load model structure also referencing to both the state information and the training event record.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: February 13, 2024
    Assignees: State Grid Smart Research Institute Co., Ltd., State Grid Corporation of China Co., Ltd, State Grid Jiangsu Electric Power Co., Ltd., State Grid Shandong Electric Power Company, State Grid Jiangsu Electric Power Co., Ltd., Information and Communication Branch
    Inventors: Yishen Wang, Xinan Wang, Haifeng Li, Chunlei Xu, Di Shi, You Lin, Siqi Wang, Zhiwei Wang, Jing Cao, Bo Guo, Zhengyang Ding
  • Patent number: 11480594
    Abstract: Systems and methods for processing measurement data in an electric power system include acquiring the measurement data by a phasor measurement unit (PMU) coupled to a line of the electric power system, and inputting a plurality of the measurement data within a predetermined time window into a K-nearest neighbor (KNN) for identifying bad data among the plurality of the measurement data, wherein when one of the plurality of measurement data contains a bad datum, the machine learning module sends the bad datum to a denoising autoencoder module for correcting the bad datum, wherein the denoising autoencoder module outputs a corrected part corresponding to the bad datum, and when one of the plurality of measurement data contains no bad datum, the machine learning module bypasses the denoising autoencoder module and outputs the one of the plurality of measurement data as an untouched part.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: October 25, 2022
    Assignees: Global Energy Interconnection Research Institute Co. Ltd, State Grid Corporation of China Co. Ltd, State Grid Jiangsu Electric Power Co., Ltd., State Grid Shanxi Electric Power Company
    Inventors: Yingzhong Gu, Guanyu Tian, Chunlei Xu, Haiwei Wu, Zhe Yu, Di Shi
  • Patent number: 10770904
    Abstract: Systems and methods are disclosed to control a power inverter by extracting photovoltaic (PV) maximum power under a plurality of operating conditions as one or more reference variables; predicting the future behaviors of a PV output voltage as one or more controlled variables based on a current operational condition; generating one or more control signals for the H5 inverter that minimizes an error between the reference variable and the controlled variables; and controlling the power inverter with the one or more control signals.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: September 8, 2020
    Assignees: State Grid Corporation of China Co. Ltd, Global Energy Interconnection Research Institute Co. Ltd, State Grid Beijing Electric Power Company
    Inventors: Zhehan Yi, Haifeng Li, Xiaohu Zhang, Xiaoying Zhao, Di Shi, Ruisheng Diao, Zhiwei Wang
  • Patent number: 10203293
    Abstract: The present invention discloses a method for lightning stroke identification and location on optical fiber composite overhead ground wire. In the method, according to the property that the lightning stroke will cause a sudden temperature rise at the lightning stroke position on the optical fiber composite overhead ground wire, optical fiber resources in the optical fiber composite overhead ground wire and the high-sensitivity detection and high-precision event locating capability of a distributed optical fiber temperature sensor can be fully utilized.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: February 12, 2019
    Assignees: STATE GRID CORPORATION OF CHINA CO., LTD., GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE, CO., LTD., STATE GRID HEBEI ELECTRIC POWER COMPANY CO., LTD.
    Inventors: Lidong Lv, Cheng Zhong, Fengzhen Zhou, Weiwei Miao, Yun Liang, Binglin Li, Jinghong Guo, Ningxi Song, Han Su