In recent years, gas-insulated switchgear (GIS) substations have become widely used in power systems. Due to their compact structure, extremely high oscillation frequencies are prone transient overvoltages or very fast (VFTOs) when the isolating switch circuit breaker is operated. The characteristics of these special processes GIS and effect hybrid reactive compensation (HRPC) on were studied. ...

In the authors’ previous research, a new method for partial discharge detection in switchgear based on near-field was proposed. The content of this paper is continuation research. order to realize reasonable layout magnetic field probe switchgear, simulates and analyzes influence internal structure propagation characteristics electromagnetic wave signal generated by discharge, determines instal...

This paper aims at studying the impact of focal position offset on joint integrity AA1050 battery busbar during remote laser welding. Welding experiments were conducted different offsets in L-joint with integration beam oscillation. The was evaluated by multiple indicators including weld geometry, thermal profile, porosity and mechanical strength. Results showed that defocusing tends to be favo...