PD characteristics and mechanisms in artificial air-filled voids at room and liquid nitrogen temperatures
PD characteristics and mechanisms in artificial air-filled voids at room and liquid nitrogen temperatures
复制标题
室温和液氮温度下人造空气填充空隙中的局放特性和机制
DOI：
10.1109/94.752008
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
M. Hara
中科院分区：
文献类型：
--
作者：
S. Tsuru;M. Nakamura;T. Mine;K. Sakai;J. Suehiro;M. Hara
在这项研究中，局部放电（PD）特性在人工空气填充的空隙在室温和液氮温度下进行了实验研究。有人发现，在液氮温度（77 K）的最低PD起始电压随着环境温度的降低，由于在空隙中的氧冷凝。通过对放电电流脉冲和光图像的观察，发现在室温和液氮温度下，放电存在三种模式：流光放电、汤森放电和类辉光放电。特别是液氮温度下的模态随应力时间的变化更为明显。
In this study, partial discharge (PD) characteristics in artificial air-filled voids at room and liquid nitrogen temperatures were investigated experimentally. It was found that minimum PD inception voltage at liquid nitrogen temperature (77 K) decreased with decrease in ambient temperature due to condensation of oxygen in the void. By observation of PD current pulses and light images, it was found that there were three modes of discharge: streamer, Townsend and glow like discharges in PD at room and liquid nitrogen temperatures. Especially the mode at liquid nitrogen temperature changes markedly with the stress time.