高電圧電力機器における絶縁劣化検出法の動向

概要

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High-voltage electric power apparatus is used for a long period of time. The insulator of high-voltage apparatus is exposed to high electric strength in the meantime. For this reason, an insulator may deteriorate and carry out insulation breakdown. In order to prevent this beforehand, insulation degradation diagnosis is performed. In this paper, the principle of many insulation degradation detecting methods to high-voltage apparatus was considered first, and the same principles were summarized. The result was four classifications, partial discharge, insulation resistance, dielectric relaxation, and space charge. Next, the insulation degradation detecting methods were reviewed for this classification based on author's research result. Furthermore, the research trend of the partial discharge method applied many high-voltage apparatus was described. Moreover, about the residual charge method and ac loss current method which attract attention by the cable, a future research trend and a future subject were described.
湘南工科大学の論文
2004-03-18