New formulas for predicting audible noise from overhead HVAC lines using evolutionary computations

Audible noise (AN) produced by corona discharges from high voltage transmission lines is one of the more important considerations in line design. Therefore, line designers must predetermine the AN using prediction formulas. This paper presents the results of applying evolutionary computation techniques using AN data from lines throughout the world to develop new, highly accurate formulas for predicting the -weighted AN during heavy rain and stable rain from overhead ac lines. Calculated AN’s using these new formulas and existing formulas are compared with measured data.