Connection structure and method for single-side Pi connection of multi-circuit overhead transmission lines on same tower

Abstract

The invention discloses a connection structure and method for single-side Pi connection of multi-circuit overhead transmission lines on the same tower. The connection structure for single-side Pi connection of multi-circuit overhead transmission lines on the same tower comprises a Pi-connected overhead line and a newly-built overhead line; the Pi-connected overhead line comprises an angle tower, a first lead group, a second lead group and a first jumper wire; the first wire group comprises a first wire and a second wire, and the second wire group comprises a third wire and a fourth wire; the newly-built overhead line comprises a terminal tower, a third wire group, a second jumper wire and a third jumper wire, the third wire group comprises a fifth wire and a sixth wire; the terminal tower and the angle tower are arranged in a spaced mode in the preset horizontal direction, the first wire and the fifth wire are electrically connected through the second jumper wire, and the second wire and the sixth wire are electrically connected through the third jumper wire. The connection structure for single-side Pi connection of the same-tower multi-circuit overhead transmission line has the advantages of low construction cost, short power failure time and the like.

Description

technical field [0001] The invention relates to the technical field of power transmission lines, in particular to a connection structure and a connection method for one-sided π connection of multi-circuit overhead power transmission lines on the same tower. Background technique [0002] In the economically developed eastern plains, due to the increasing shortage of land resources, transmission lines with double circuits on the same tower or multiple circuits on the same tower are often used in power construction to maximize the use of line corridors, increase power grid transmission energy, and save projects. invest. With the rapid development of my country's economy, the demand for power is increasing day by day, and the grid structure of the power system is becoming more and more complex and perfect. On existing transmission lines (such as figure 1 as shown) for unilateral breaking and π access to the new substation (such as figure 2 As shown), it is a relatively exten...

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Problems solved by technology

[0004] For this reason, the embodiment of the present invention proposes a unilateral π-connected connection structure for multi-circuit overhead transmission lines on the same tower, to solve the problems in the related art when the existing transmission lines are unilaterally broken and π connected to the newly-built substation. The long power outage time and high construction cost are the problems

[0005] The embodiment of the present invention proposes a connection method for the connection structure of the above-mentioned multi-circuit overhead transmission line on the same tower with unilateral π connection, so as to solve the problem of unilateral breaking of existing transmission lines and π connection to new substations in the related art The problems of long power outage time and high construction cost

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