110 kV电缆排管敷设方式下增加段长设计研究

Research of Increasing Length of 110 kV Cable Laid in Pipes

随着国内城市化进程的加快,采用电缆敷设逐渐成为城市电力通道的主要形式。目前传统电缆设计段长有限,单位长度内电缆接头数量相对较多,增加段长,减少电缆接头是提高电缆线路供电可靠率的一项重要措施。该文主要研究电缆截面、电缆护层感应电势、电缆制造、运输、施工、运维等方面对排管敷设方式下的110 kV电缆段长的影响。为今后大长段电缆工程实际应用提供理论依据。

With the acceleration of domestic urbanization,the use of cable has gradually become the main form of urban power channels.At present,the length of cable is limited.The number of cable connectors per unit length is relatively large.Increasing the section length and reducing the cable connectors is an important measure to improve the reliability of the power supply of the cable line.This article mainly studies the inf luence of cable cross-section,cable sheath induced potential,cable manufacturing,transportation,construction,operation and maintenance on the length of 110kV cable laid in pipes.This article provides some reference value for long lenth cable construction.