Anti-galloping devices and marker balls may be treated as multi-concentrated loads applied to overhead transmission lines

which will inevitably impact the tension and sag characteristic of the conductor. Previous engineering calculation is usually based on the uniform distributed load assumption which cannot reflect features of concentrated load.For this purpose

a novel method for calculating tension of multi-concentrated load on overhead transmission lines is proposed

where the effects of weight

quantity and position of the multi-concentrated load on the mechanical characteristics of overhead transmission lines are fully considered

and calculation accuracy is improved. Results of engineering calculation indicate that the equivalent loads as well as the tension and sag obtained by traditional method based on the uniform distributed load assumption are less than those by the proposed method due to ignoring layout of the concentrated loads. The proposed method overcomes above drawbacks and thus is more accurate compared with the traditional method.This research is helpful for engineering calculation of multi-concentrated load in continuous span of overhead transmission lines.