Outdoor compound insulation high-voltage anti-thunder support

Abstract

The invention relates to the field of an electric system high voltage technique and an equipment manufacturing technique, in particular to an outdoor compound insulation high-voltage anti-thunder support. The outdoor compound insulation high-voltage anti-thunder support comprises an insulation pipe, an upper metal flange is arranged at the upper end of the insulation pipe, a lower metal flange isarranged at the lower end of the insulation pipe, the insulation pipe is filled with a metal oxide valve block set, a silicone rubber sheath sleeves the insulation pipe, and umbrella skits are arranged on the silicone rubber sheath. By means of the outdoor compound insulation high-voltage anti-thunder support, the insulating and supporting performance of a conventional high-voltage insulation support is integrally combined with the anti-thunder performance of a metal oxide lightning arrester, the insulating level is increased, the anti-thunder effect is also good, the outdoor compound insulation high-voltage anti-thunder support can be installed at an outdoor transformer substation bus or incoming line, the site space can be saved, compact arrangement of electrical equipment is facilitated, the electrical installation distance between the support and protected equipment can be shortened, the anti-thunder level of a transformer substation is effectively increased, the power supply reliability is improved, and a series of economic loss when the equipment is damaged due to insulation breakdown is reduced.

Description

technical field [0001] The invention relates to the field of high-voltage technology of power system and equipment manufacturing technology, in particular to an outdoor composite insulating high-voltage lightning protection pillar. Background technique [0002] With the rapid development of my country's industrialization and urbanization, social electricity consumption has increased significantly, and the national economy and power system construction have developed rapidly. The installed capacity, power grid scale, and electricity consumption of the whole society have ranked first in the world. Compared with advanced countries, the per capita electricity consumption level is still low, and the future electricity demand will maintain a rapid growth trend for a long time. The power grid construction is in the ascendant, and the number of substations in operation and construction is increasing. At the same time, the economic and social development has higher and higher requirem...

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Problems solved by technology

The high-voltage insulating pillars are installed on the busbar structure of the substation to support and insulate the tubular busbar, and then connect with the metal oxide arrester installed on the ground structure through a certain length of lead wire to limit the lightning overvoltage on the busbar; For a certain length, it must be supported and fixed by the high-voltage insulating pillars installed on the ground frame to prevent the electrical safety distance between the ground and the phase being insufficient due to too long leads, or damage to other equipment due to excessive mechanical stress. The lightning arrester does not have the load-bearing function. At the same time, in order to prevent the lightning wave from invading the substation along the overhead line and causing the insulation breakdown accident of the substation equipment, it is necessary to install an independent metal oxide lightning arrester on the incoming line side, which increases the floor area and is not conducive to the protection To play the lightning function, it is necessary to explore safer and more reliable lightning protection measures

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