Patents by Inventor Zhaoyun Leng

Zhaoyun Leng 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).

  • Patent number: 11973333
    Abstract: A method for determining phase locking of critical arc light includes: step 1: monitoring and collecting light radiation intensity of an arc inside a switch cabinet in real time, and converting the collected light radiation intensity into an electrical signal; step 2: extracting a power-frequency fundamental wave of the electrical signal, comparing an amplitude of the power-frequency fundamental wave of the electrical signal with a first threshold, and generating a pre-warning signal based on a comparison result of the first threshold; step 3: comparing the amplitude of the power-frequency fundamental wave of the electrical signal with a second threshold voltage, and generating a control signal based on a comparison result of the second threshold voltage and a protection time threshold; and step 4: protecting the switch cabinet under the critical arc light environment based on the pre-warning signal and the control signal.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: April 30, 2024
    Assignee: Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.
    Inventors: Jin Miao, Ping Chen, Yin Gu, Xi Wu, Jun Qin, Bin Fei, Junfeng Wu, Zhaoyun Leng, Ming Ren
  • Patent number: 11821932
    Abstract: A partial discharge (PD) detection apparatus for gas-insulated equipment includes a photon collector, an optical splitter, a first photoelectric conversion module, an ultraviolet fluorescent crystal, a second photoelectric conversion module, and a signal processing module, where the ultraviolet fluorescent crystal is configured to convert a second optical radiation signal into an optical radiation signal of an ultraviolet fluorescence band, and the signal processing module is configured to calculate first apparent intensity based on a first voltage signal output by the first photoelectric conversion module, calculate second apparent intensity based on a second voltage signal output by the second photoelectric conversion module, and determine discharge intensity of the optical radiation based on a ratio of the second apparent intensity to the first apparent intensity. Technical solutions of the present disclosure are not affected by an unknown distance between a discharge position and a detection point.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: November 21, 2023
    Assignee: Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.
    Inventors: Jin Miao, Ping Chen, Yin Gu, Bin Fei, Xi Wu, Haiping Shen, Fen Huang, Zhaoyun Leng, Xinyang Zhou, Junfeng Wu, Jiefeng Wan
  • Publication number: 20230187920
    Abstract: A method for determining phase locking of critical arc light includes: step 1: monitoring and collecting light radiation intensity of an arc inside a switch cabinet in real time, and converting the collected light radiation intensity into an electrical signal; step 2: extracting a power-frequency fundamental wave of the electrical signal, comparing an amplitude of the power-frequency fundamental wave of the electrical signal with a first threshold, and generating a pre-warning signal based on a comparison result of the first threshold; step 3: comparing the amplitude of the power-frequency fundamental wave of the electrical signal with a second threshold voltage, and generating a control signal based on a comparison result of the second threshold voltage and a protection time threshold; and step 4: protecting the switch cabinet under the critical arc light environment based on the pre-warning signal and the control signal.
    Type: Application
    Filed: February 6, 2023
    Publication date: June 15, 2023
    Inventors: Jin Miao, Ping Chen, Yin Gu, Xi Wu, Jun Qin, Bin Fei, Junfeng Wu, Zhaoyun Leng, Ming Ren
  • Publication number: 20220308105
    Abstract: A partial discharge (PD) detection apparatus for gas-insulated equipment includes a photon collector, an optical splitter, a first photoelectric conversion module, an ultraviolet fluorescent crystal, a second photoelectric conversion module, and a signal processing module, where the ultraviolet fluorescent crystal is configured to convert a second optical radiation signal into an optical radiation signal of an ultraviolet fluorescence band, and the signal processing module is configured to calculate first apparent intensity based on a first voltage signal output by the first photoelectric conversion module, calculate second apparent intensity based on a second voltage signal output by the second photoelectric conversion module, and determine discharge intensity of the optical radiation based on a ratio of the second apparent intensity to the first apparent intensity. Technical solutions of the present disclosure are not affected by an unknown distance between a discharge position and a detection point.
    Type: Application
    Filed: July 7, 2021
    Publication date: September 29, 2022
    Inventors: Jin Miao, Ping Chen, Yin Gu, Bin Fei, Xi Wu, Haiping Shen, Fen Huang, Zhaoyun Leng, Xinyang Zhou, Junfeng Wu, Jiefeng Wan