Patents by Inventor Zengping WANG

Zengping WANG 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).

  • Fault transient features optimization method and system of AC/DC system based on dissipated energy
    Patent number: 12095356
    Abstract: The invention relates to a fault transient features optimization method and system of AC/DC system based on dissipated energy, which belongs to the HVDC transmission technology and is used to solve the problem that the DC pulsed current is too high and the generator power angle swing of the AC system on the rectifier side is too large during the process of the HVDC transmission system restart on fault.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: September 17, 2024
    Assignee: North China Electric Power University
    Inventors: Jing Ma, Yufeng Zhao, Jialun Li, Zhencun Nie, Tong Jiang, Zengping Wang, Qixun Yang
  • Method and System for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance
    Publication number: 20230341451
    Abstract: The application relates to a method and system for a pilot directional protection of LCC-HVDC lines based on virtual grounding resistance The method comprises: Obtaining a conduction state information of a converter and characteristic parameters of a converter circuit within one commutation period after a fault occurs; according to the conduction state information and characteristic parameters, determining characteristic frequency of the circuit; according to the characteristic frequency and characteristic parameters, determining a virtual grounding resistance; according to the virtual grounding resistance, determining fault areas.
    Type: Application
    Filed: December 14, 2022
    Publication date: October 26, 2023
    Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITY
    Inventors: Jing Ma, Wenyue ZHAO, Zhencun NIE, Jialun LI, Yuchong WU, Zengping WANG
  • FAULT TRANSIENT FEATURES OPTIMIZATION METHOD AND SYSTEM OF AC/DC SYSTEM BASED ON DISSIPATED ENERGY
    Publication number: 20230275504
    Abstract: The invention relates to a fault transient features optimization method and system of AC/DC system based on dissipated energy, which belongs to the HVDC transmission technology and is used to solve the problem that the DC pulsed current is too high and the generator power angle swing of the AC system on the rectifier side is too large during the process of the HVDC transmission system restart on fault.
    Type: Application
    Filed: August 23, 2022
    Publication date: August 31, 2023
    Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITY
    Inventors: Jing MA, Yufeng ZHAO, Jialun LI, Zhencun NIE, Tong JIANG, Zengping WANG, Qixun YANG