This inventor holds 3 USPTO granted patents and 5 published patent applications. Top assignee: Kunming University of Science and Technology. Active years: 2025-2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 81 Years Active: 2025-2026
Title: Innovations by Hongfang Zhao in Wind Power Systems
Introduction
Hongfang Zhao is a notable inventor based in Kunming, China. He has made significant contributions to the field of wind power systems, particularly in the area of adaptive reclosing of AC transmission lines. His innovative approach addresses critical challenges in the reliability and efficiency of wind energy transmission.
Latest Patents
Hongfang Zhao holds a patent for a "Method and system for adaptive single-phase reclosing of wind farm AC transmission lines." This invention relates to a method and system for adaptive reclosing of single-phase AC transmission lines in wind power systems. The invention utilizes single-ended electrical quantity to determine the type of fault. After a fault occurs, a signal acquisition device is used to sample the voltage of the fault phase. The obtained voltage is subjected to short-time Fourier transform to extract the amplitude of the fundamental frequency voltage component, and then processed with differential amplification to construct a fault nature identification criterion. Combined with a sliding time window for fault identification, if it is identified as a permanent fault, the reclosing device is locked out; if it is identified as a transient fault, the fault disappearance time is calculated to determine the reclosing time and output the closing signal. This invention is designed for adaptive reclosing after a circuit breaker trips in wind power AC transmission lines.
Career Highlights
Hongfang Zhao is affiliated with Kunming University of Science and Technology, where he contributes to research and development in renewable energy technologies. His work has garnered attention for its practical applications in enhancing the performance of wind power systems.
Collaborations
Hongfang Zhao collaborates with esteemed colleagues, including Hongchun Shu and Yue Dai, who contribute to his research endeavors. Their combined expertise fosters innovation in the field of wind energy.
Conclusion
Hongfang Zhao's contributions to wind power technology exemplify the importance of innovation in renewable energy systems. His patent for adaptive reclosing methods significantly enhances the reliability of wind farm operations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile