Su Zhao is a research assistant in the Department of Electrical Engineering at Shanghai Jiao Tong University, China. He received his BSc degree from Xi’an Jiaotong University in 2014 and his Ph.D. from Shanghai Jiao Tong University in 2019. He was a postdoctoral researcher at the University of Liverpool, UK, from 2019 to 2021. His primary research interests include gas discharge and gas insulation.
Synergetic effect is a special gas discharge phenomenon among insulating gas mixtures, which has important reference value for gas selection of future gas-insulated power equipment. The research progress and investigation methods of synergistic effect and insulation characteristics of different gas mixtures at home and abroad are reviewed in this chapter. The synergistic effect between different kinds of gas mixtures including SF6 gas mixtures and some new insulation gases such as c-C4F8, CF3I, and C4F7N is presented. Combined with the results of multiple studies, it can be seen that the synergistic effect of the gas mixture has a certain relationship with the electronic transport parameters and discharge patterns. Besides, the synergistic effect of the same gas mixture may change with the change of external conditions such as gas pressure, voltage type, and electrode distance.
Part of the book: Modern Applications of Electrostatics and Dielectrics