Calculation Method of Maximum Sag for Overhead  Transmission Line Based on LabVIEW

Abstract

Abstract:

Sag is one of the important parameters for the operation and maintenance of power transmission lines, which directly affects the safe and stable operation of transmission lines. Because the sag monitoring device of transmission line could not obtain the direct verification results through laboratory tests, the site observation and comparison tests should be carried out. Due to the low efficiency of traditional calculation method, a measurement method based on LabVIEW was presented for maximum sag of traditional line. Through the calculation and process analysis of sag, the calculation program of the sag was compiled by using G language of LabVIEW, in which the value of sag could be calculated quickly and accurately by inputting the required basic parameters. The results have shown that this method can ensure the accuracy and rapidity of the measured data of the sag, effectively overcome the artificial error, as well as simplify the test work. It can be applied in the field tests of the transmission line sag.

Key words: LabVIEW, overhead power transmission line, power transmission line, condition monitoring, maximum sag

GUI Feifei, WANG Zhengang, PANG Baisheng, ZHANG Ende, HUA Qi, GAO Huijuan, WANG Yan. Calculation Method of Maximum Sag for Overhead Transmission Line Based on LabVIEW[J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(7): 108-113.

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Calculation Method of Maximum Sag for Overhead Transmission Line Based on LabVIEW

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