Gas–solid interface charge tailoring techniques: what we grasped and where to go

Zhousheng Zhang (1) , Zheming Wang , G. Teyssedre (2) , Tohid Shahsavarian (3) , Mohamadreza Arab Baferani (3) , Geng Chen (4) , Chuanjie Lin (5) , Bo Zhang (6) , Uwe Riechert , Zhipeng Lei (7) , Yang Cao (3) , Chuanyang Li (3)

1 Shanghai University of Electric Power
2 LAPLACE-DSF - Diélectriques Solides et Fiabilité
3 UCONN - University of Connecticut
4 North China Electric Power University
5 THU - Tsinghua University [Beijing]
6 Xjtu - Xi'an Jiaotong University
7 Taiyuan University of Technology

Charging of insulators modifies local electric field distribution and increases potential threat to the safety of the gas insulated equipment. In this paper, surface charge tailoring techniques are classified and reviewed by introducing a Dam-flood model. Technical solutions of different charge tailoring methods are compared and discussed. The outlook of potential solutions to suppress charge accumulation is recommended and discussed based on industrial consideration. This paper serves as a guide handbook for engineers and researchers into the study of charge tailoring methods. Meanwhile, we hope that the content of this paper could shed some lights upon charge-free insulators to promote the industrial application of HVDC GIL/GIS.

Mots clés: Epoxy resins; direct fluorination; surface charge migration; DC surface flashover; HVDC GIL

Domaines: Matériaux; Energie électrique

Zhousheng Zhang, Zheming Wang, G. Teyssedre, Tohid Shahsavarian, Mohamadreza Arab Baferani, et al.. Gas–solid interface charge tailoring techniques: what we grasped and where to go. Nanotechnology, 2021, 32 (12), pp.122001. ⟨10.1088/1361-6528/abccea⟩. ⟨hal-03326097⟩