Metal particle contamination is an important reason for insulation failure of gas-insulated transmission lines (GILs). Particle trap the common method suppression. At present, research on motion characteristics metal particles near a and optimization parameters under AC voltage insufficient. Based that, firstly, dynamic model was established, in front were studied, combined with experiments. Th...

Four typical types of artificial defects are designed in conducting the decomposition experiments of SF6 gas to obtain and understand the decomposition characteristics of SF6 gas-insulated medium under different types of negative DC partial discharge (DC-PD), and use the obtained decomposition characteristics of SF6 in diagnosing the type and severity of insulation fault in DC SF6 gas-insulated...

Air is the most commonly used insulation gas in high voltage applications: Mostly ambient air for overhead power lines and air insulated substations, but also synthetic air in medium voltage metalenclosed switchgear at slightly elevated pressures. Moreover, nitrogen and air have been proposed as suitable alternatives to SF6 in high-voltage insulation and interruption applications of gas insulat...

The reliability of gas insulated substations can be improved by eliminating the effects of metallic particles. The purpose of this paper is to develop techniques, which will formulate the basic equations that will govern the movement of particles like aluminum, copper in uncoated as well as coated Busduct.

This study investigates the technical feasibility of retro-filling a C3F7CN/CO2 gas mixture for existing SF6-insulated accelerators. Negative DC breakdown characteristics 20% C3F7CN / 80% CO2 and SF6 varying pressure, gap distance field uniformity are analyzed experimentally using four distinctly different electrode configurations. The shows higher strength than configurations with high uniform...

An important task of the asset management process is the evaluation of the long-range investment and resource planning of the assets of the complete power system and the life cycle cost assessment of different type of substations. The calculation of the long-range investment and resource planning can be performed by using dynamic asset simulation tools, which represent the statistical behavior ...