Visiting Pr. Shuhong WANG (Xi’an Jiaotong University), 14 Sept. 2018
Prof. Shuhong Wang was born in China, in 1968. He received his Ph.D. degree in Electrical Engineering from Xi’an Jiaotong University, in 2002. Currently, he is a Professor with School of Electrical Engineering, Xi’an Jiaotong University. He is a senior member of IEEE (No. 92041995) and a board member of Council of Applied Superconducting Technology of China Electrotechnical Society. His research interests include theory, computation and application of electromagnetic fields and design, simulation and optimization of electrical apparatus. He presided one National Science and Technology Major Project, two projects supported by the National Natural Science Foundation of China and tens of projects supported by electric power company. He is the author of more than 100 technical papers as well as 6 professional books.
Research on short circuit dynamic characteristics and mechanical life of power transformer winding (Ph.D. student: Shuang WANG)
The dynamic characteristics of transformer windings under short circuit state are of great significance to the safe operation of transformers. The electromagnetic properties of a 110 kV transformer, including leakage magnetic field and electromagnetic force of windings, are calculated using finite element method (FEM). During the short circuit, the power transformer windings’ dynamic force, displacement and stress are calculated. The characteristics of windings’ dynamic motion process because of the big electromagnetic force are analyzed. The mechanical life model of transformer windings is established based on the mechanical experiment of the winding material. The analysis method and research results can provide reference for taking measures to enhance the ability to withstand short circuit of transformer windings.
Study on the Electromagnetic Field in HVDC/AC Hybrid Submarine Cable Tunnel (Ph.D. student: Ting ZHU)
There is a rapidly increasing on the volume of HVDC cable over the last twenty years. To reduce the cost of cable tunnel construction, it is very common that the HVDC cable is laid in the original alternating current (AC) cable tunnel. In the Xiang’an tunnel of Xiamen, China, the operation and maintenance personnel have an electric shock when contacting the sandboxes in DC side during the work period. A model of the tunnel with ±320kV DC cable lines and a 220kV AC cable line is shown in this presentation. The distribution of power frequency electromagnetic field in the HVDC/AC hybrid submarine cable tunnel is studied by simulation and measurement, and the cause of the accident that the operation and maintenance personnel have an electric shock in the tunnel is analyzed, which provides guidance for the safe operation of the cable.
Visiting Schedule
- 09h40-10h00: Welcome coffee
- 10h00-10h30: Presentation of L2EP Laboratory and of “OMN” Team
- 10h30-11h00: Research on short circuit dynamic characteristics and mechanical life of power transformer winding
- 11h00-11h30: Study on the Electromagnetic Field in HVDC/AC Hybrid Submarine Cable Tunnel14h00-14h30: Magnetic materials characterization
- 14h30-15h00: Visiting Platform – Magnetic Materials
- 15h00-16h00: Discussions / exchanges on potential collaboration projects
Visiting Pr. Shiyou YANG (Zhejiang University), 4 Sept. 2018
Seminar of Prof. TA cao Minh (Vietnam) 22 oct. 2018
