Analiza możliwości wykorzystania kamery do pomiaru promieniowania ultrafioletowego emitowanego przez wyładowania niezupełne generowane na modelu izolatora przepustowego

Tematyka artykułu dotyczy określenia możliwości i wskazania zakresu zastosowania w diagnostyce izolatorów liniowych i stacyjnych kamery rejestrującej promieniowanie ultrafioletowe. W artykule przedstawiono wyniki pomiarów promieniowania ultrafioletowego emitowanego przez wyładowania niezupełne powierzchniowe generowane na modelu izolatora przepustowego umieszczonego w powietrzu. W ramach przeprowadzonych badań dokonano analizy wpływu szeregu czynników metrologicznych na uzyskiwane wyniki.

The scope of this paper considers possibility determination and application area indication of a camera for ultraviolet radiation recor-ding in diagnosis of linear isolators. Measurement results of ultraviolet radiation emitted by surface partial discharges (SPDs) generated on a bushing isolator mounted in the air are presented in the paper. Recording was performed by use a professional UVollé camera by the firm OFIL which enables for ultraviolet radiation measurement in the range of 50 nm to 280 nm. The main aim of works, performed under laboratory conditions, was to estimate the influence of supply voltage value changes in the range of 0 to 0.98 Up (breakdown voltage) on the counting quantity of partial discharges occurring on the surface of the ceramic bushing isolator. Moreover, the measurements and analyses performed, enclosed the influence estimation of the duration time of voltage applied to high tension electrodes, on the optical phenomena progress connected with SPDs generation. In the scope of works executed also the influence analyses of the distance between electrodes as well parameters of camera applied (sensitivity, amplification and size of the counting window) on the achieved results were investigated. Additionally, a comparative analysis of measurements results achieved for two diameters of the metal electrode (refill) for bushing isolator model was performed.