Abstract:
Online monitoring for SO
2 and its trend has important significance for fault pre-warning and analysis of SF
6 electrical equipment. Based on ultraviolet fluorescence method, an online monitoring device is designed including SO
2 UV fluorescence optical path system, detection circuit, software and online lossless gas sampling system. The online lossless gas sampling system has many merits including automatic sampling, gas recovery, gas wastage, leakage and pollution prevention and multiple decomposition gases detection. Experimental test results and field operation show that proposed device can satisfy needs of online SO
2 monitoring of power equipment.