温度对有机复合绝缘干式高压电气设备局部放电水平影响的研究

有机复合绝缘干式高压电气设备(包括电流互感器、穿墙套管和电缆终端)作为一种新型电力设备,其局部放电特性的研究工作做得还比较少。笔者以有机复合绝缘干式电流互感器为研究对象,结合其绝缘结构和材料特性对不同温度下的局部放电特性进行了试验研究及理论分析,并运用EMTP程序进行温升计算,提出以局部放电水平为判据来确定有机复合绝缘干式高压电气设备的温升限值。

Temperature Effects of PD Level for Organic Composite Insulation Dry-type High Voltage Apparatus

Organic composite insulation dry-type high voltage electrical equipment(including current transformers,wall bushings and cable terminals) as a new type of electrical equipment,the study work of partial discharge characteristics are still quite few.In this paper,take organic composite insulation dry-type current transformer as the representative subjects of study,which characteristics of partial discharge on different temperature are studied and analyzed combined with insulation structure and material properties.Moreover,according to EMTP calculate temperature rise,it is proposed that determines the temperature rise limits of the subjects take the partial discharge level as the criterion.