Line arrester

Abstract

The arrester has a discharge column hangingly fastened to an overhead line such that the column performs an oscillating movement. A corona ring (4) is connected to the column and arranged at a free end of the column. The corona ring comprises a movement channel (5) i.e. annular duct. A balancing mass (6) is arranged in the movement channel, and moves along the movement channel against a deflection direction in an event of deflections of the arrester from a resting position. The mass comprises solid or liquid components, where solid components are designed as bulk from roll or sliding elements. The liquid components are selected from water and glycerol or a salt solution or a sugar solution or oils, or ester or an ionic liquid.

Description

technical field

[0001] The invention relates to a line arrester according to patent claim 1 . Background technique

[0002] In regions with a high density of lightning strikes on the ground, overhead lines present a particularly high risk in exposed locations, where lightning strikes inside towers or overhead lines can cause serious failures in the power supply network. The consequence is often a brief blackout or even a short circuit between phases of different systems.

[0003] Line arresters are meant to be an economical and feasible way to prevent or effectively reduce the occurrence of such problems. This line arrester is installed on the iron tower parallel to the insulator. Here, one end of the line arrester is connected to the overhead line leading the high or medium voltage. The other end on the ground side is connected to a ground cable at ground potential, for example to a circuit pylon which is itself grounded. If an overvoltage occurs in the overhead line, f...

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