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Method and system for connecting multi-circuit transmission lines and busbars on the same tower

A technology of transmission lines and multiple circuits on the same tower, applied in cable installation, electrical components, electrical digital data processing, etc., can solve problems such as low efficiency, and achieve the effect of improving screening efficiency, improving efficiency, and improving work efficiency.

Active Publication Date: 2016-05-11
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a method and system for connecting multi-circuit transmission lines and busbars on the same tower to solve the problem of low efficiency in the operation process of connecting multi-circuit transmission lines to busbars on the same tower

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  • Method and system for connecting multi-circuit transmission lines and busbars on the same tower
  • Method and system for connecting multi-circuit transmission lines and busbars on the same tower

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Embodiment Construction

[0025] The following describes in detail the preferred embodiments of the method and system for connecting multi-circuit power transmission lines and busbars on the same tower in the present invention.

[0026] Firstly, a description will be given to an embodiment of a method for connecting a multi-circuit transmission line to a bus on the same tower.

[0027] see figure 1 , is a schematic flow chart of a method embodiment of connecting a multi-circuit transmission line with a busbar in the same tower of the present invention, including steps:

[0028] Step S101: Obtain a pre-stored simulation model of multi-circuit transmission lines on the same tower, wherein each line in the simulation model is connected to phase A, phase B, and phase C of the bus through three circuit breakers;

[0029] Step S102: Traverse the pre-stored phase sequence arrangements of the multi-circuit transmission lines on the same tower to obtain a set of phase sequence arrangements;

[0030] Step S103...

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Abstract

Disclosed is a method for connecting one-tower multiple-loop electric transmission lines and buses. The method includes that a simulation model of prestored one-tower multiple-loop electric transmission lines is obtained, and each of the one-tower multiple-loop electric transmission lines in the simulation model is respectively connected with a phase A, a phase B and a phase C of the buses through three circuit breakers; prestored phase sequence arrangement modes of the one-tower multiple-loop electric transmission lines are traversed to obtain a set of phase sequence arrangement modes; each circuit breaker is controlled according to the phase sequence arrangement modes, each of the one-tower multiple-loop electric transmission lines accesses to corresponding phases of each of the buses in the simulation model, and three-phase current imbalance indicators under steady state in the simulation model are calculated and stored; after the prestored phase sequence arrangement modes are traversed, a phase sequence arrangement mode corresponding to a minimum three-phase current imbalance indicator among the three-phase current imbalance indicators is determined; and connection between each of the one-tower multiple-loop electric transmission lines and the corresponding phases of each of the buses according to the determined phase sequence arrangement modes. The invention further provides a corresponding system for connecting the one-tower multiple-loop electric transmission lines and the buses. By the arrangement, efficiency of operation process for connecting the lines and the buses is improved.

Description

technical field [0001] The invention relates to the technical field of connection between transmission lines and busbars, in particular to a method and system for connecting multi-circuit transmission lines on the same tower to busbars. Background technique [0002] The actual operation of multi-circuit transmission lines on the same tower generally adopts the non-transposition method because of the complexity of transposition. When the line is not transposed, due to the influence of electromagnetic coupling between the lines, there will be three-phase current imbalance problems (including negative sequence current and zero sequence current) in the operation of the multi-circuit transmission line on the same tower, which seriously threatens the safety of high-voltage transmission lines. Safe operation and correct action of relay protection devices. [0003] The unbalanced three-phase current of multi-circuit transmission lines with towers is related to many factors, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50H02G7/00
Inventor 刘正富陈晓科赵艳军杨汾艳盛超马明唐景星
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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