Patents by Inventor Caiyun MO

Caiyun MO 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).

  • Publication number: 20250052792
    Abstract: Optical calculation method and system for relay protection based on Faraday magneto-optical rotation effect are provided. A cascaded optical computing approach is employed, where three optical current transformers are connected in series on a single optical path. Final output optical signal represented as a cascaded multiplication of outputs of three optical current transformers, carries a Faraday rotation angle containing differential current information. Differential current required for protection is computed by modulation ratio which is calculated by use of a carrier and modulation wave signals of the output optical signal detecting by filtering circuit from the third optical current transformer.
    Type: Application
    Filed: November 22, 2023
    Publication date: February 13, 2025
    Applicant: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Caiyun MO, Guoqing ZHANG, Wenbin YU, Yuxin ZHANG, Ying XU, Zhizhong GUO
  • Patent number: 12222374
    Abstract: Optical calculation method and system for relay protection based on Faraday magneto-optical rotation effect are provided. A cascaded optical computing approach is employed, where three optical current transformers are connected in series on a single optical path. Final output optical signal represented as a cascaded multiplication of outputs of three optical current transformers, carries a Faraday rotation angle containing differential current information. Differential current required for protection is computed by modulation ratio which is calculated by use of a carrier and modulation wave signals of the output optical signal detecting by filtering circuit from the third optical current transformer.
    Type: Grant
    Filed: November 22, 2023
    Date of Patent: February 11, 2025
    Assignee: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Caiyun Mo, Guoqing Zhang, Wenbin Yu, Yuxin Zhang, Ying Xu, Zhizhong Guo
  • Publication number: 20240125821
    Abstract: A schematic diagram of a wideband measurement system for mixed-connected CVT based on an optical voltage sensor is provided. The wideband measurement system comprises a CVT power frequency measurement section and an optical wideband measurement section. In the optical wideband measurement section, a low-voltage capacitor is connected in series between the low-voltage terminal and the ground terminal of the medium-voltage capacitor in the capacitor voltage divider. An optical voltage sensor is connected in parallel across the terminals of the low-voltage capacitor to measure the wideband voltage signal under test. The wideband measurement system for mixed-connected CVT described in the invention enables the CVT to have wideband measurement capabilities while ensuring the accuracy of conventional CVT power frequency measurements.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 18, 2024
    Applicant: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Guoqing ZHANG, Wenbin YU, Caiyun MO, Yuxin ZHANG, Jie ZUO