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《Electric Engineering》 2018-15
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Study on Tension Calculation of Overhead Transmission Lines

TAO Lei;ZHANG Nan;North China Power Engineering Co.,Ltd.,of China Power Engineering Consulting Group;  
To solve the problem of existing vertical sag method,a novel method based on precise control of conductor length was proposed to.First,through the power series expansion method,the hyperbolic cosine equation of tension arc of front wie was solved.Then by target sag,the equations of the target arc were derived by iterative approximation method.Determining the target equation and the maximum stress does not exceed the standard limits.According to the request before and after the tight line equation,the need tight line length was calculated.Finally,the equivalent replacement method was used to correct the tight line length of the conductor,so that the corrected tight line length was more accurate.This method was used to tighten the line on a 10 kV line,and the accuracy of the method was verified.
【CateGory Index】: TM752
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