| Title |
ZnO Arrester Diagnosis by Measurement of Temperature |
| Authors |
길경석(Kim Gyung-Suk) ; 한주섭(Han Ju-Seop) ; 송재용(Song Jae-Yong) ; 서황동(Seo Hwang-Dong) ; 문승보(Moon Seung-Bo) ; 박태곤(Park Tae-Gone) |
| Keywords |
ZnO Arrester ; Diagnosis ; Leakage Current ; Surface Temperature ; Ambient Temperature ; Polynomial |
| Abstract |
In this paper, surface temperatures of ZnO arresters as a function of ambient temperatures and leakage currents were experimentally investigated. The variations of the leakage current was below 10 uA, which comes about 4.5 % of the normal leakage current. Temperature differences between the ambient and the surface of arresters were not shown until 150 % to the normal leakage current, and were remarkable over 200 %. From the results, we deduced a couple of polynomials which enables the calculation of the leakage current by the measurement of surface temperature. Tests on used arresters have shown the same results as the experimental one. Also, we expect that an arrester diagnosis is possible by measuring the surface temperature of them after more studies on the effect of wind, moisture penetration, and arrester types. |