XLPE电缆地线电流分析与接地改造措施一例  

Analysis of Current Flowing in the Ground Wire of XLPE Cable and Modification of Grounding Mode

作　　者：陈小林[1] 成永红[1] 王贤清[1] 石山[1] 赵勇[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《高电压技术》2006年第2期87-88,94,共3页High Voltage Engineering

摘　　要：根据某工程电缆的结构参数、敷设环境和运行参数近似计算了电缆地线中的电容和感应电流后按电缆运行最高负荷和金属护套感应电压的安全值提出并评估了电缆接地改造方案。结果表明,选择电缆接地方式时需综合考虑电缆结构参数、长度、负荷大小等因素。A kind of grounding mode of XLPE cable is described and the current flowing in the ground wire is detected. According to the structural parameters, laying environment and working parameters, the components of capacitive current and induced current are calculated in engineering approximation. A proper modification of grounding mode is proposed on the basis of the maximum loading current of cable and the upper limit of induced voltage in its metallic shealth. The effect of modification is also evaluated.

关 键 词：电缆 接地 交叉互联 感应电势 电容电流 

分 类 号：TM247[一般工业技术—材料科学与工程]