Reinforced lightning-protection insulation supporting column of annular valve plate structure

Abstract

The invention relates to the technical field of electric power system insulation and over-voltage protection technology and equipment, in particular to a reinforced lightning-protection insulation supporting column of an annular valve plate structure. The reinforced lightning-protection insulation supporting column comprises an epoxy resin core rod and an insulation cylinder, wherein the insulation cylinder is installed outside the epoxy resin core rod in a sleeving manner, the upper end of the insulation cylinder is provided with an upper fixed flange, the lower end of the insulation cylinderis provided with a lower fixed flange, an annular metal oxide valve plate group is arranged between the epoxy resin core rod and the insulation cylinder, and the epoxy resin core rod, the annular metal oxide valve plate group and the insulation cylinder are successively arranged in a sleeving manner, poured, sealed and arranged seamlessly. Compared with the ceramic high-voltage insulation supporting column, the reinforced lightning-protection insulation supporting column is light in weight; by an unique integrated structure, the comprehensive operation cost is low; the metal oxide valve plategroup of the annular cylindrical structure is uniform in field intensity, good in heat dissipation capacity, high in repetition resistance and high in through-current capability, so that the residuallightning over-voltage borne by power transformation equipment is lower, and the safety performance is higher.

Description

technical field [0001] The invention relates to the field of power system insulation and overvoltage protection technology and equipment manufacturing technology, in particular to a reinforced lightning protection insulating pillar with an annular valve plate structure. Background technique [0002] A large number of insulating pillars are used in power plant step-up stations and grid substations in the power system to support live conductors so as to maintain a sufficient electrical safety distance between the live conductor and the grounding body and the live conductor. The commonly used insulating pillars are porcelain Insulator pillars and composite insulating pillars, outdoor porcelain insulator pillars are usually painted with anti-fouling flashover paint on the surface of the insulator in order to improve the level of anti-pollution flashover, and the weight is heavy, the porcelain skirt is easy to collapse, and the impact resistance is poor. Installation and operation...

AI Technical Summary

Problems solved by technology

The metal oxide arrester of the current structure does not have the load-bearing function due to structural defects. The insulating pillars and arresters in the substation must be installed separately at the same time to exert the force-bearing and lightning protection functions respectively. This mode will inevitably increase the corresponding supporting equipment and space occupation. The area and the increase of the electrical distance are not conducive to the performance of the lightning protection function of the arrester. It is necessary to explore a safe and reliable combination device

Images