Method for determining position coordinate of insulator in transformer substation and apparatus

Abstract

The invention provides a method for determining a position coordinate of an insulator in a transformer substation and an apparatus. The method comprises the following steps that: bearing analyses are carried out on all insulators in a V-shaped insulator chain so as to obtain horizontal bearings and vertical bearings of all the insulators; gradients of all the insulators in the V-shaped insulator chain are calculated according to the horizontal bearings and the vertical bearings; horizontal position coordinates of all the insulators in the V-shaped insulator chain are determined; and position coordinates of all the insulators in the V-shaped insulator chain are calculated according to the gradients and the horizontal position coordinates. Therefore, it is convenient for a designer of an electrical major to design an electrical dimension of an equalizing ring according to the position coordinates of the insulators. According to the invention, actual positions of a V-shaped insulator under various load effects, so that an electrical dimension of an equalizing ring can be designed conveniently and the efficiency of engineering construction is also improved.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transformation, in particular to a method and a device for determining the position coordinates of an insulator in a substation. Background technique [0002] At present, in the substation, the insulator sheets of the 1000kV "V" type suspension insulator strings are all selected from NGK Tangci CA-872 type insulators. The physical shape and geometric size are unpredictable, which makes the physical shape and geometric size of the "V"-shaped insulator string after construction inconsistent with the construction drawings. Normally, the voltage equalizing ring is designed according to the "V"-shaped insulator string, and the position coordinates of the five insulators at the bottom are calculated according to the linear shape of the two insulator strings. It is curved, and the position coordinates of the five insulators at the bottom are inconsistent with the expected calculated coordinat...

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Problems solved by technology

As a result, the design of the voltage equalizing ring is tentatively designed according to the actual position of the insulator string, and it is discussed while constructing, resulting in a lot of unnecessary waste

[0003] In the process of research and practice of the prior art, the inventors of the present invention found that in the existing implementation, due to the inability to accurately calculate the true shape of the "V"-shaped insulator under various loads, and the bottom 5 The specific coordinates of each insulator are not conducive to the design of the electrical dimensions of the grading ring, and also reduce the construction efficiency of the project.

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