Flat-plate multi-chamber gap discharge electrode

Abstract

The invention relates to a flat plate multi-chamber gap discharge electrode, comprising a rectangular parallelepiped flat plate, a through-center fixing hole set on the center of gravity of the rectangular parallelepiped flat plate, a first discharge end arranged at one end of the rectangular parallelepiped flat plate, and a second discharge end arranged at the other end of the rectangular parallelepiped flat plate. discharge terminals, and the first discharge terminals and the second discharge terminals are symmetrically distributed on both sides of the through-core fixing hole. It is a flat plate structure, which greatly reduces the overall height of a single gap as a multi-chamber gap lightning protection device; the discharge end is spherical, and the surface field strength distribution is relatively uniform at high voltage, which can effectively avoid the dispersion of breakdown voltage caused by local charge accumulation, thus ensuring The correct and effective operation of the arrester and the safe operation of the power grid; the middle part of the flat structure is provided with a through-hole fixing hole, which is convenient for multiple electrodes to be fixed through the fixed support through the center, and can firmly bind the electrodes to ensure that the electrodes will not expand due to heat. , The rapid expansion of the gas, the explosive force, and the promotion of electromagnetic power will cause displacement or even fall off.

Description

technical field [0001] The invention relates to the technical field of lightning protection for high-voltage transmission lines in power systems, in particular to a flat-plate multi-chamber gap discharge electrode. Background technique [0002] With the continuous in-depth research of power system line arresters, the application of various new arresters is developing rapidly. The multi-gap arrester is designed for lightning protection by utilizing the characteristics of multi-section arcs generated by gas gap discharge in high-voltage technology. In the actual application process, the discharge electrode will be loosened between the external surface of the discharge electrode and the external structure due to thermal expansion and contraction due to the thermal effect of the arc burning; under the action of lightning impulse current, the discharge electrode will be Displacement or even falling off is caused by the explosive force of the rapid expansion of the gas and the pr...

AI Technical Summary

Problems solved by technology

Under the dual effects of thermal effect and electromagnetic power, the fixed position of the discharge electrode is prone to change and damage the multi-gap structure, which makes the lightning protection characteristics of the multi-gap arrester change, which seriously leads to the failure of its lightning protection function and causes accidents.

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