Patents by Inventor Qiulong NI

Qiulong NI 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).

  • Flexible excitation system and control method therefor
    Patent number: 12149199
    Abstract: The present application discloses a flexible excitation system and a method for controlling the same. The flexible excitation system consists of a plurality of groups of flexible excitation power units connected in parallel, a deexcitation circuit unit and a flexible excitation control unit. The method for controlling the flexible excitation system includes: realizing the internal fault-tolerant operation control of the flexible excitation power units by cooperatively controlling AC circuit breakers and DC circuit breakers of the flexible excitation power units and a deexcitation switch; dynamically controlling ceiling voltage when terminal voltage drops by using the fast response control ability of the flexible excitation system, so as to improve the forced excitation output capacity of the self-shunt excitation system.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: November 19, 2024
    Assignee: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE
    Inventors: Jiancheng Zhang, Hongtao Xiong, Wen Hua, Ying Yang, Boliang Lou, Kuayu Wu, Xiaoming Huang, Weizhen Sun, Chengyu Lu, Qiulong Ni
  • FLEXIBLE EXCITATION SYSTEM AND CONTROL METHOD THEREFOR
    Publication number: 20220407316
    Abstract: The present application discloses a flexible excitation system and a method for controlling the same. The flexible excitation system consists of a plurality of groups of flexible excitation power units connected in parallel, a deexcitation circuit unit and a flexible excitation control unit. The method for controlling the flexible excitation system includes: realizing the internal fault-tolerant operation control of the flexible excitation power units by cooperatively controlling AC circuit breakers and DC circuit breakers of the flexible excitation power units and a deexcitation switch; dynamically controlling ceiling voltage when terminal voltage drops by using the fast response control ability of the flexible excitation system, so as to improve the forced excitation output capacity of the self-shunt excitation system.
    Type: Application
    Filed: August 26, 2022
    Publication date: December 22, 2022
    Inventors: Jiancheng ZHANG, Hongtao XIONG, Wen HUA, Ying YANG, Boliang LOU, Kuayu WU, Xiaoming HUANG, Weizhen SUN, Chengyu LU, Qiulong NI