Company Filing History:
3 out of 12 
2 out of 16 Years Active: 2021-2025
Title: Longji Li: Innovator in Cable Defect Detection Technologies
Introduction
Longji Li is a prominent inventor based in Tianjin, China, known for his contributions to the field of cable defect detection technologies. With a total of three patents to his name, he has made significant advancements that enhance the reliability and safety of electrical cables.
Latest Patents
One of Longji Li's latest patents is a defect detection method and apparatus for the cushion layer of a cable. This innovative method involves obtaining specification parameters of a corrugated sheath of a cable, calculating the volumes of the cushion layer in both deformed and undeformed states, and determining the stressed-state deformation ratio. The process also includes measuring electrical properties to assess the integrity of the cushion layer.
Another notable patent focuses on the defect detection method for the semi-conducting bedding layer of a power cable. This method entails obtaining various parameters of the power cable, calculating resistance values, and determining the volume resistivity of the semi-conducting bedding layer. By comparing this resistivity with preset evaluation parameters, the method effectively identifies defects in the bedding layer.
Career Highlights
Longji Li has worked with reputable organizations, including the Electric Power Science & Research Institute of State Grid Tianjin Electric Power Company and the State Grid Tianjin Electric Power Company. His work in these institutions has allowed him to develop and refine his innovative technologies in cable defect detection.
Collaborations
Throughout his career, Longji Li has collaborated with notable colleagues such as Chi Zhang and Wei Fan. Their combined expertise has contributed to the successful development of advanced detection methods in the electrical engineering field.
Conclusion
Longji Li's innovative work in cable defect detection technologies has significantly impacted the electrical engineering industry. His patents reflect a commitment to enhancing safety and reliability in power systems.