摘要
随着城市地下空间开发利用的持续深入,地下电力电缆与金属输气管道之间的电磁干扰问题渐趋严峻。特别是当电力电缆出现故障时,此类干扰可能导致邻近金属管道的感应电压显著升高,进而引发管道腐蚀、损坏,甚至酿成严重安全事故。本文聚焦地下电力电缆故障对邻近金属输气管道的影响,采用有限元法展开分析,探究了电力电缆发生线路接地故障时,感应电压对金属管道的电气干扰机理。仿真结果表明,铜质屏蔽材料在降低感应电压方面具备显著优势,可有效增强管道的安全性,为地下电力电缆与金属管道的安全共存提供了理论支撑与实践指引。
With the continuous in-depth development of urban underground space utilization,the problem of electromagnetic interference between underground power cables and metal gas pipelines has become increasingly severe.Particularly,when power cable faults occur,such interference may lead to a significant increase in the induced voltage of adjacent pipelines,resulting in pipeline corrosion,damage,and even serious safety accidents.Focusing on underground power cable faults on adjacent metal gas pipelines,this paper employs the finite element method to perform an analysis and explores the electrical interference mechanism of induced voltage on metal pipelines when a power cable experiences a line-to-ground fault.Simulation results indicate that copper shielding materials possess significant advantages in reducing induced voltage,which can effectively enhance the safety of pipelines and provide theoretical support and practical guidance for the safe coexistence of underground power cables and metal pipelines.
作者
郭浩然
GUO Haoran(Wuhan Power Supply Company,State Grid Hubei Electric Power Company,Wuhan 430000,Hubei Province,China)
出处
《电力与能源》
2025年第5期533-535,561,共4页
Power & Energy
关键词
综合管廊
电力管线
感应电压
屏蔽材料
utility tunnel
power pipeline
induced voltage
shielding material
