The goal of paper is to present the magnetic field calculations in high current bus ducts. Finiteelement method is used to do this. Bus ducts under study have figure such as circle area. Thecalculations will be using mathematical relations, meshed geometric shape and analyzing them.Geometric mean will help us to determine the value of magnetic field. COMSOL software is appliedfor simulation stu...

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...

The movement of metal particles is effectively inhibited when a DC GIL’s (gas-insulated transmission line) electrode coated. This article aims to study the problem coating falling off during GIL operation and change in particle-inhibitory effect after ageing. A closed constant temperature heating platform particle motion observation an SF6 atmosphere were built. epoxy resin was aged for 1200 h ...

Gas insulated switchgear (GIS) plays a vital role in high voltage transmission of electrical energy due to its advantages of high reliability and performance, compact in dimensions and outstanding compatibility with the environment. It uses sulphur hexafluoride gas as its insulant and coolant because of its high dielectric strength and excellent arc quenching ability. Gas insulated switchgear i...

As Gas Insulated DC transmission systems unite the advantages of space saving installation and large transmission capacity this technology is increasingly discussed and investigated today. The main problem in operation with respect to insulation seems to be identified today, which is charge accumulation on the surface of the spacer. These trapped charges can cause a reduction of dielectric stre...

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...

Spacers for the HVDC GIS/GIL play an important role in mechanically supporting conductors and separating compartments. At same time, their insulation performance affects stability safety of system operation. Design rules knowledge specific to AC spacers do not apply those DC spacers. Considering shape influence on surface electric field intensity spacer under applied voltage, as determined our ...

Accurate quantitative diagnosis of free-conducting particle faults plays an important role in improving the reliability gas insulated line (GIL) system. However, existing fault methods cannot accurately identify with different quantities and sizes. Motivated by this, this paper proposes a novel method based on vibration signals, which integrates variational mode decomposition (VMD), self-adapti...