Patents by Inventor Quanxia Ma

Quanxia Ma 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).

  • Method for preventing differential protection maloperation of optical fiber caused by saturation of single CT of 3/2 connection
    Patent number: 10622804
    Abstract: The present disclosure relates to a method for preventing a maloperation of differential protection of an optical fiber caused by saturation of a single Current Transformer (CT) of 3/2 connection. By applying a combination of the differential judgment and the sub-CT current judgment, reliable identification of internal and external faults is ensured, and the problem of misjudging of the internal fault as the external fault can be prevented as well.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 14, 2020
    Assignees: XJ GROUP CORPORATION, XJ ELECTRIC CO., LTD., XUCHANG XJ SOFTWARE TECHNOLOGY CO., LTD., STATE GRID CORPORATION OF CHINA
    Inventors: Baowei Li, Chuankun Ni, Wenzheng Li, Xu Li, Ziqiang Jiang, Yanmei Tang, Huizhen Hao, Xin Shi, Jiansong Zhao, Xintao Dong, Yingying Xi, Quanxia Ma, Yantao Qiao, Yu Tang, Liping Meng
  • METHOD FOR PREVENTING DIFFERENTIAL PROTECTION MALOPERATION OF OPTICAL FIBER CAUSED BY SATURATION OF SINGLE CT OF 3/2 CONNECTION
    Publication number: 20170163024
    Abstract: The present disclosure relates to a method for preventing a maloperation of differential protection of an optical fiber caused by saturation of a single Current Transformer (CT) of 3/2 connection. By applying a combination of the differential judgment and the sub-CT current judgment, reliable identification of internal and external faults is ensured, and the problem of misjudging of the internal fault as the external fault can be prevented as well.
    Type: Application
    Filed: November 15, 2016
    Publication date: June 8, 2017
    Inventors: Baowei Li, Chuankun Ni, Wenzheng Li, Xu Li, Ziqiang Jiang, Yanmei Tang, Huizhen Hao, Xin Shi, Jiansong Zhao, Xintao Dong, Yingying Xi, Quanxia Ma, Yantao Qiao, Yu Tang, Liping Meng