Simulation device of floating potential flaws inside GIS power equipment

Abstract

The invention provides a simulation device of floating potential flaws inside GIS power equipment. The simulation device comprises an air chamber, a top electrode, a floating potential body, an insulator and a bottom electrode. A bus bar and a voltage-sharing ball are further arranged inside the air chamber. A threaded hole with a downward opening is formed in the bus bar, and a threaded hole with an upward opening is formed in the position, opposite to the bus bar, of the inner wall on the lower side of the air chamber. The top electrode is composed of a switchover base and a top electrode extension rod and is mounted in the threaded hole of the bus bar, and the bottom electrode is mounted in the threaded hole in the inner wall of the lower side of the air chamber. The insulator is arranged at the center of the upper surface of the bottom electrode, and the floating potential body is fixed at the center of the upper surface of the insulator. According to the simulation device of the floating potential flaws inside the GIS power equipment, generated partial discharge signals can be detected by a power equipment condition monitoring system, meanwhile, the order of severity can not result in breakdown, the measuring result of the discharge characteristic and the measuring result of the gas component characteristic both have the obvious floating discharge characteristic, and the flaw recognition degree is high.

Description

Technical field [0001] The invention relates to the field of electric power technology, and in particular to a simulation device for floating potential defects inside GIS electric equipment. Background technique [0002] Due to its high operational reliability and small footprint, gas insulated switchgear (GIS) equipment has been used more and more widely in the current grid operation, and related insulation status monitoring and diagnosis research changes Is more important. [0003] There is a state inside GIS equipment: floating potential. Floating potential refers to the ground potential of a metal part between high and low voltages, formed according to its impedance. Floating potential has advantages and disadvantages. It can be used to evenly distribute the electric field at the high-voltage end of the equipment, and may also cause the internal conductor potential of the equipment to drift and cause partial discharge. The current research on floating potential is mainly bas...

AI Technical Summary

Problems solved by technology

The floating potential has both advantages and disadvantages. It can be used to evenly distribute the electric field at the high-voltage end of the equipment, and it may also cause the potential drift of the conductor inside the equipment, resulting in partial discharge

The current research on levitation potential is mainly based on simulation and laboratory models, and the characteristic parameters of the established model are somewhat different from the actual operating conditions.

Images