Experimental Verification of a Real-Time Program for the Determination of Temperature and SAG of Overhead Lines

摘要: An outdoor test facility was used to experimentally verify real-time overhead conductor ampacity and sag programs. The consists of a 213m span 26/7 336 kcmil ACSR completely instrumented ented with 13 thermocouples as well tension device. A weather station mounted near mid-span monitors all pertinent conditions. measured tempetatures fluctuated significantly antly along the length span. Spanwise variations in instantaneous temperatures were frequently excess 100C for wide variety currents predicted by program ram within°C100C average tests. Measured sags within 5 percent values program. results experimental project show that accurate predictions can be achieved knowing current, wind speed, direction ambient air temperature. Therefore, computer programs are capable predicting minimum amount data provided simple inexpensive station. Instrumentation ation placed on is not necessary execution