期刊
IEEE TRANSACTIONS ON POWER DELIVERY
卷 16, 期 1, 页码 138-143出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/61.905619
关键词
degradation; diagnostics; MO-arrester; monitoring; power loss; resistive current; temperature; third harmonic
Various diagnostic methods--either on-line or off-line--for monitoring of metal-oxide surge arresters in power systems are known. In most cases they are based on the measurement of the leakage current. This paper describes the most important ones in detail, such as measuring of the V-I-characteristics or analysis of the third harmonic content of the leakage current. Their advantages and weak points, respectively, are discussed, basing on most recent investigation results on the change of the V-I-characteristics due to electrical and nonelectrical stresses. It turns out that nearly none of these commonly applied methods really work satisfactory under either technical or economical aspects. As an alternative the temperature of the MO-insert is proposed to be used for diagnostics purposes. This is made possible by newly developed passive temperature sensors, which can be remotely accessed without any hardware connection to the environment. It is shown how the temperature can be used for monitoring of all kinds of degradation, energy absorption, thermal stability or even pollution performance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据