METHOD AND SYSTEM FOR THE DETERMINATION OF WIND SPEEDS AND INCIDENT RADIATION PARAMETERS OF OVERHEAD POWER LINES

摘要

The present invention relates to a method and system for the determination of parameters related to the speed of wind that blows near an overhead electrical power line (single or bundle conductors). The parameters include an “effective wind speed” as well as an “effective incident radiation” acting on a power line span. The measurement is made by using the combination of mechanical vibrations and movements/positions in two or three dimensions through sensors in direct link with the power line conductor.

主权项

1. A method for the determination of wind speed to be used for evaluation of the ampacity in using real-time monitoring of at least one span of overhead power lines, comprising the steps of: measuring Aeolian vibration frequency by using outputs of at least one oscillation sensor; and determining wind speed component perpendicular to the conductor axis according to the following equation:
V=f·d/S wherein f is the Aeolian vibration frequency (Hz), S is the Strouhal number, V is perpendicular wind speed (m/s), and d is conductor diameter (m).