Composite tower overvoltage simulation model design method

A technology of simulation model and design method, applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problem of lack of relevant standards, and achieve the effect of improving lightning protection performance

Inactive Publication Date: 2016-07-06
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

Most of the existing tower overvoltage simulation models are for ordinary towers, and there is no relevant standard for the simulation model of composite towers under lightning strike overvoltage

Method used

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  • Composite tower overvoltage simulation model design method
  • Composite tower overvoltage simulation model design method
  • Composite tower overvoltage simulation model design method

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Embodiment Construction

[0040] A method for designing a composite tower overvoltage simulation model, the specific steps are as follows:

[0041] (1) Determine the size and material selection of the composite tower, and search for the composite material impact flashover characteristic parameters and air impact flashover characteristic parameters of the typical composite tower according to the composite tower structure size. Example tower such as figure 2 As shown, the heights of the ground cross-arm and the three conductor cross-arms are 28.2m, 24.8m, 21.3m and 17.8m respectively; the height of the steel pipe pole is 15.7m, and the radius is 950mm; 10mm.

[0042] (2) Establish a composite tower multi-wave impedance model, and the wave impedance of a single conductor can be calculated with formula 1:

[0043]

[0044] where r and h are the radius and height perpendicular to the cylinder, respectively.

[0045] In view of the fact that the tower is a system of 4 conductors at most, the calculati...

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Abstract

The invention relates to a composite tower overvoltage simulation model design method. According to a structural size and material properties of a composite material tower, a composite tower multi-wave impedance model is established; according to a ground leading-down structure, a distributed parameter model is established; a power transmission line model is established; according to a soil category, a ground resistance model is established; the models are reasonably combined according to an actual structure to finally obtain a composite tower overvoltage simulation model. The composite tower overvoltage simulation model design method disclosed by the invention namely is a method for establishing, according to the structure of the composite tower, the simulation model capable of reflecting an overvoltage characteristic of a composite material under the lightning condition, and provides the basis tower design.

Description

technical field [0001] The invention belongs to the technical field of overvoltage prevention and control of power system transmission lines, and in particular relates to a design method for a composite tower overvoltage simulation model. Background technique [0002] With the development of new materials and manufacturing processes, reinforced composite materials have been widely used in the electrical and electronic fields. Insulation towers made of composite materials in transmission lines can enhance the relative ground and interphase air insulation strength and creepage distance of the towers, improve the lightning protection and anti-pollution performance of the lines, thereby greatly reducing the electrical failure rate of the lines. Compared with the traditional iron tower, it has the advantages of corrosion resistance, high mechanical strength and light weight, and can reduce the width of the transmission line corridor and improve the lightning resistance level of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367G06F2113/16
Inventor 廖一帆张福增张宇娇普子恒
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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