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. ...

With changes in insulated defects, the environment, and so on, new partial discharge (PD) data are highly different from the original samples. It leads to a decrease in on-line recognition rate. The UHF signal and pulse current signal of four kinds of typical artificial defect models in gas insulated switchgear (GIS) are obtained simultaneously by experiment. The relationship map of ultrahigh f...

Abstract. Close-Range Photogrammetry (CRP) technology advanced rapidly along with the development of camera sensors. CRP has many advantages over other methods in terms technical data acquisition, product quality, and cost. Because these advantages, method can be used various applications. In this study, is to monitor deformation SF6 Gas Insulated Line (GIL) object between two substations Indon...

In this paper, a transmission-line type of input impedance model originally developed by King et al. [4] for the insulated dipole antenna embedded in a homogeneous dissipative medium is extended to the case of insulated coaxial slot antenna. Physical construction of the latter indicates the presence of additional current path(s) inside the feed line, which shall lead to the shortening of its re...

Air gap defects inside a spacer reduce its insulation performance, resulting in stress concentration, partial discharge, and even flashover. If such are located at the interface between conductor, decrease mechanical may occur. In this work, finite element method-based simulation model is developed to analyze influence of on electrical properties ±320 kV direct current gas insulated line (DC GI...

In this paper, the trajectories of free conducting particles of various sizes inside a three phase common enclosure Gas Insulated Busduct(GIB) are simulated by solving the nonlinear second order differential equation of particle motion iteratively by using RK 4 Order Method. Compressed Gas Insulated Substations(GIS) consists of a conductor supported by spacers inside of Sulphur hexafluoride gas...