This inventor holds 10 USPTO granted patents and 1 published patent application and 6 EPO patents. Top assignees: Abb Schweiz Ag, Abb Research Ltd., Hitachi Energy Switzerland Ag. Active years: 2013-2023.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Beijing, CN (2013 - 2019)
- Vasteras, SE (2019 - 2023)
Company Filing History:
4 out of 2,935 
2 out of 996 
2 out of 184 
Years Active: 2013-2023
Title: The Innovative Contributions of Youyi Li
Introduction
Youyi Li is a prominent inventor based in Beijing, China. He has made significant contributions to the field of electrical engineering, particularly in power line fault detection. With a total of 10 patents to his name, Li's work has advanced the reliability and efficiency of power transmission systems.
Latest Patents
One of Youyi Li's latest patents is a method for determining a fault in a protected zone of a power line. This method involves obtaining measurements at a measurement point at one end of the power line and processing these measurements through multiple parallel processing branches. Each branch utilizes low pass filters with differing cut-off frequencies to obtain filtered measurements. By performing reach calculations on these measurements, it can be determined if a fault exists within the protected zone based on threshold comparisons.
Another notable patent is a method, system, and apparatus for fault detection in line protection for power transmission systems. This innovation involves obtaining voltage and current measurements at a protection device installed on an electrical line. By determining a differential value of the current and calculating the voltage at a setting point, the system can detect faults based on voltage changes during fault and pre-fault periods. This solution ensures high accuracy and reliability in fault detection with minimal waiting time.
Career Highlights
Throughout his career, Youyi Li has worked with reputable companies such as ABB Schweiz AG and ABB Research Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in electrical engineering.
Collaborations
Li has collaborated with notable colleagues, including Kai Liu and Bin Su. Their combined expertise has contributed to the advancement of technologies in power line protection and fault detection.
Conclusion
Youyi Li's contributions to the field of electrical engineering, particularly in power line fault detection, have been significant. His innovative patents and collaborations with esteemed colleagues highlight his commitment to enhancing the reliability of power transmission systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile