Line guide and connection structure for 750kV series compensation power distribution device

Abstract

The invention discloses a line guide and connection structure for a 750kV series compensation power distribution device, and the device comprises a first downlead line and a second downlead line, which are respectively disposed at two sides of a base angle tower. The first downlead line and a second downlead line are respectively connected with a GIL line side series compensation incoming line casing pipe and a GIL line side series compensation outgoing line casing pipe. A series compensation power distribution device is connected to the GIL line side series compensation incoming line casing pipe and the GIL line side series compensation outgoing line casing pipe, and is disposed at a side of a base angle tower transmission line. An extended series compensation power distribution device isseparated from a conventional angle tower, so the structure occupies a small area, reduces the land acquisition cost, and saves the land resources. The construction is not affected by a live line, and the power-off time of a line caused by the extension of the series compensation power distribution device can be greatly reduced. The wiring is simple, and the angle tower on an original operation line is fully utilized. A leading-out line of the series compensation power distribution device does not need a dedicated outgoing line frame, thereby greatly reducing the consumption of engineering steel, and saving the engineering investment.

Description

technical field [0001] The invention belongs to the technical field of substations and series compensation stations, and in particular relates to a line connection structure of a 750kV series compensation power distribution device. Background technique [0002] Along with the rapid development of my country's national economy, my country's power industry is also developing rapidly, and the construction of domestic power grids is rapid. By the end of 2013, there were 75 750kV lines in the whole network in Northwest China, with a total length of about 12731.235km, 26 750kV substations, and a main transformer capacity of 65000MVA. At present, the AC power transmission and transformation project of the first channel of the domestic 750kV power grid in 750kV AC ultra-high voltage Xinjiang (Jinchang-Jiuquan-Anxi transmission line) and the AC power transmission and transformation project of the second channel of AC ultra-high voltage Xinjiang (Qaidam ~Haixi~Riyueshan transmission ...

AI Technical Summary

Problems solved by technology

In order to solve this problem, some 750kV lines need to be installed with series compensation distribution device. According to the system conditions, the series compensation distribution device can be built together with the substation or a series compensation station can be set up separately; The layout of the electrical device is applied to the expansion of the line of the series compensation distribution device, which not only occupies a large area index, but also requires a long power outage time of the original operating line during the expansion, which cannot meet the production and operation requirements of the existing line.

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