期刊
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
卷 21, 期 6, 页码 2466-2475出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TDEI.2014.004587
关键词
thermal; temperature; electrical discharge; arc; plasma diagnostics; FEA; optical emission spectroscopy; OES; insulation surface; heat transfer
资金
- National Grid (UK)
- EPSRC [EP/G01244X/1]
- EPSRC [EP/G01244X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G01244X/1] Funding Source: researchfish
The thermal features of low current AC discharges, of between 2 and 5 mA, between water droplets are presented in this paper. The 'Best-fit' method of optical emission spectroscopy (OES) analysis is applied to measure the discharge temperature. The discharge temperature increased from 1200 K to 1500 K when the current level rose from 2.5 mA to 5 mA, and its temperature was less sensitive to arc length than arc current. Measurements of the distribution of temperature along a 4 mm discharge showed that the regions including the arc roots do not have a higher temperature than the discharge column, despite appearing brighter. The introduction of a silicone rubber insulation surface adjacent to the discharge increased the discharge temperature, typically by similar to 160 K, and its energy per half cycle by 150%. The resulting temperature distribution on the insulation surface was captured by infrared thermal imaging. Finite element analysis (FEA) software successfully simulated heat transfer between discharge and surface, and showed good agreement with experimental results: highest temperatures being seen under the centre of the arc, where damage is also first seen in practice. FEA can thus be used to model, for example, the impact of thermal conductivity on insulation surface temperature.
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