This article re-examines the Brillouin flow solutions in crossed-field diodes, with applications to magnetrons, magnetically insulated line oscillators (MILOs), and transmission lines (MITLs). The are constructed for various geometries, including planar MILOs, MITLs, cylindrical magnetrons electrons flowing azimuthal direction, MITLs MILOs axial radial direction. A common theme of this analysis...

Abstract The surface charge accumulation on the basin insulator is a particular problem in high‐voltage direct current (HVDC) gas insulated switchgears (GIS) and transmission lines (GIL), which restricts development application of extra/ultra (EHV/UHV) technology. distribution anti‐flashover performance are closely related to shape. To obtain optimal insulator, shape optimisation model based ar...

The acoustic emission (AE) is a group of phenomena involving generation of transient elastic (acoustic or vibro-acoustic) waves, resulting from liberation of intermolecular bond energy (deformation, cracking, phase transitions). This fact contributed to elaboration of the acoustic emission method, which is widely used in: (i) diagnostics of cutting tools and machine cutting process, (ii) machin...

Abstract As an important part of the substation, seismic capacity ultra-high voltage (UHV) electrical equipment is related to safe and stable operation substation whole power grid. The UHV gas-insulated transmission lines (GIL) have many structural characteristics, such as long pipeline distance, large span between supports obvious amplification effect supports. Its natural frequency close pred...

Sulfur dioxide (SO2) is a typical sulfur hexafluoride (SF6) decomposition by product in gas insulated switchgear (GIS). Online monitoring and analyzing SO2 gas concentration can timely and effectively evaluate the insulation performance of SF6-gas-insulated apparatus. In this study, pure and 3 at % Cu-doped SnO2 microspheres were synthesized via a simple and facile hydrothermal method, and were...