Patents by Inventor Wuqi ZHANG

Wuqi ZHANG 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 and system for evaluating inertia of power system and storage medium
    Patent number: 11581736
    Abstract: A method and a system for evaluating inertia of a power system and a storage medium. The method includes: injecting a cosine active power disturbance into the power system by small-disturbance injection, and obtaining frequency response at a node where the disturbance is injected, where the active power disturbance can be an energy storage, wind power, or photovoltaic power; acquiring an evaluation framework of inertia and frequency regulation capability of the power system according to relative characteristics of a frequency response function; and constructing a mathematical relationship between the impedance and frequency response characteristics according to a relationship among active power disturbance, frequency fluctuation and impedance.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: February 14, 2023
    Assignee: Hunan University
    Inventors: Yunfeng Wen, Wuqi Zhang, Wei Guo
  • METHOD AND SYSTEM FOR EVALUATING INERTIA OF POWER SYSTEM AND STORAGE MEDIUM
    Publication number: 20220368133
    Abstract: A method and a system for evaluating inertia of a power system and a storage medium. The method includes: injecting a cosine active power disturbance into the power system by small-disturbance injection, and obtaining frequency response at a node where the disturbance is injected, where the active power disturbance can be an energy storage, wind power, or photovoltaic power; acquiring an evaluation framework of inertia and frequency regulation capability of the power system according to relative characteristics of a frequency response function; and constructing a mathematical relationship between the impedance and frequency response characteristics according to a relationship among active power disturbance, frequency fluctuation and impedance.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 17, 2022
    Inventors: Yunfeng WEN, Wuqi ZHANG, Wei GUO