Patents by Inventor Guangfan Li

Guangfan 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).

  • Partial discharge experiment power supply system for extra-high voltage transformer and method thereof
    Patent number: 8890540
    Abstract: A partial discharge test power supply system for an extra high voltage transformer comprises: an electric motor (1); an intermediate frequency generator (2) driven by the electric motor and outputting an intermediate frequency voltage; a middle transformer (9) receiving the intermediate frequency voltage and outputting a test voltage to be applied to a test sample (11) by a generator outlet (5); a low-voltage compensating reactor (8) connected between the intermediate frequency generator and the middle transformer; a high-voltage compensating reactor (10) connected between the middle transformer and the sample; wherein the electric motor and the intermediate frequency generator are arranged in a metal housing (100).
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: November 18, 2014
    Assignee: China Electric Power Research Institute
    Inventors: Guangfan Li, Jie Yang, Jinzhong Li, Xiaocen Hu, Shuqi Zhang, Yuewen Qi, Xiaoning Wang, Ninghua Wang
  • PARTIAL DISCHARGE EXPERIMENT POWER SUPPLY SYSTEM FOR EXTRA-HIGH VOLTAGE TRANSFORMER AND METHOD THEREOF
    Publication number: 20120306511
    Abstract: A partial discharge test power supply system for an extra high voltage transformer comprises: an electric motor (1); an intermediate frequency generator (2) driven by the electric motor and outputting an intermediate frequency voltage; a middle transformer (9) receiving the intermediate frequency voltage and outputting a test voltage to be applied to a test sample (11) by a generator outlet (5); a low-voltage compensating reactor (8) connected between the intermediate frequency generator and the middle transformer; a high-voltage compensating reactor (10) connected between the middle transformer and the sample; wherein the electric motor and the intermediate frequency generator are arranged in a metal housing (100).
    Type: Application
    Filed: November 12, 2010
    Publication date: December 6, 2012
    Applicant: CHINA ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Guangfan Li, Jie Yang, Jinzhong Li, Xiaocen Hu, Shuqi Zhang, Yuewen Qi, Xiaoning Wang, Ninghua Wang