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Modeling Method for Electromagnetic Field of UHV Transmission Line

A technology of transmission lines and modeling methods, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as no accurate and reliable calculation methods, and achieve high accuracy, easy operation, and good reliability.

Active Publication Date: 2018-02-06
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, corresponding calculations are required, but there is currently no set of accurate and reliable calculation methods

Method used

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  • Modeling Method for Electromagnetic Field of UHV Transmission Line
  • Modeling Method for Electromagnetic Field of UHV Transmission Line
  • Modeling Method for Electromagnetic Field of UHV Transmission Line

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Experimental program
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Embodiment Construction

[0023] Such as figure 1 As shown, the present invention provides an electromagnetic field modeling method for UHV transmission lines, which is characterized by including the following steps:

[0024] Step S1: Start CDEGS input mode, select HIFREQ module, and set soil model;

[0025] Step S2: Set the corresponding voltage and current excitation, which is the ABC phase voltage excitation and current source excitation;

[0026] Step S3, set the conductor and coating type, edit the conductor type and determine the corresponding number according to the conductor used, if there is a coating on the surface of the conductor, edit and add the corresponding coating type and determine the corresponding number;

[0027] Step S4, build a model according to actual use of SesCAD, set parameters, and add observation lines;

[0028] Step S5: Calculate the electromagnetic field, and draw the electromagnetic field curve offline.

[0029] Such as figure 2 As shown, the excitation type of the ABC phase volt...

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Abstract

The invention discloses a method for modeling the electromagnetic field of a UHV transmission line, comprising the following steps: step S1, selecting a HIFREQ module, and setting a soil model; step S2, setting corresponding voltage and current excitations, which are ABC phase voltage excitations and current source excitations; Step S3, set the conductor and coating type, edit the conductor type according to the used conductor and determine the corresponding number, if there is a coating on the conductor surface, edit and add the corresponding coating type and determine the corresponding number; Step S4, build the model according to the actual use of SesCAD , and perform parameter setting and add observation lines; step S5, calculate the electromagnetic field, and draw the offline electromagnetic field curve. The invention utilizes the UHV transmission line modeling and calculation method of CDEGS to obtain accurate off-line electromagnetic field distribution calculation results, and has the advantages of simple operation, high precision, excellent performance and good reliability.

Description

Technical field [0001] The invention relates to the technical field of power transmission, and in particular to a method for modeling an electromagnetic field of an UHV transmission line. Background technique [0002] The electromagnetic environment of 1000kV transmission lines mainly includes electric field distribution, radio interference and audible noise. According to the "1000kV Overhead Transmission Line Design Code" (GB50665-2011), the maximum field strength limit of 1000kV lines in residential areas The value is 7kV / m; for non-residential areas, the maximum offline electric field strength is controlled at 10kV / m. When the line is close to residential buildings, the maximum undistorted field strength at a height of 1.5m from the ground should not exceed 4kV / m, which is also the main factor in determining the width of the line corridor. Therefore, corresponding calculations are required, but there is currently no accurate and reliable calculation method. Summary of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q50/06
Inventor 李帅波朱景林蔡龙晟
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO