XLPE电树老化过程中的局放特性  

Study on PD Characteristics in the Course of Electrical Tree Aging in XLPE

作　　者：王洪新[1] 张水平[2] 程树康[1] 朱文兵[3] 贺景亮[3] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]常熟高等专科学校,江苏215500 [3]武汉大学,武汉430072

出　　处：《高电压技术》2003年第6期19-21,26,共4页High Voltage Engineering

摘　　要：实验研究表明XLPE绝缘电树老化过程中,局放宏观特征参数与相应的电树通道几何参数显著相关,不同的电树特征不同,而电树的类型明显地取决于外施场强。因此,根据XLPE绝缘中局放宏观特征参数的变化规律判断绝缘的老化状况将是一种有效方法。This paper deals with the experimental study on the characteristics of partial discharge in the course of electrical tree aging within XLPE insulation. It is found that the PD macroscopic characteristic parameters is significantly dependent on the corresponding geometrical parameters of electrical tree channels in the course of aging of XLPE insulation, and different kind of electrical tree has different characteristics. Beside, there is obvious correlation between the type of electrical tree and the pre -applied power -frequency stress. Therefore, to judge the aging degree of XLPE insulation according to the changing regularity of the PD macroscopic characteristic parameters within XLPE insulation will be an effective method.

关 键 词：XLPE电力电缆 绝缘材料 电树老化过程 局部放电特性 

分 类 号：TM835[电气工程—高电压与绝缘技术]