摘要
在公共走廊内,高压交流输电线路和城镇燃气管道交叉或并行带来的交流干扰问题影响管道运行。文中采用数值模拟技术,详细评估了220 kV熙龙线对广惠天然气管道的交流干扰影响情况,并且根据评估结果制订了相应的缓解措施。结果表明:在稳态干扰下和故障干扰下,管道最大干扰电压分别为22.40 V和1630 V,明显超过NACE SP 0177—2019和GB/T 50065—2011标准规定的安全限值;在适当位置布设5处水平锌带后,管道的交流干扰降低至可接受水平。
In public corridors,AC interference problems caused by the crossing or parallel of high voltage AC transmission lines and urban gas pipelines affect the operation of pipelines.In this paper,numerical simulation technology was used to evaluate the AC interference effect of Guanghui natural gas pipeline caused by 220 kV Xilong transmission line in detail and mitigation measures were developed based on the assessment results.The results show that under steady-state interference and the fault interference,the maximum interference voltage of the pipeline is 22.40 V and 1630 V,which obviously exceeds the safety limit specified in NACE SP 0177—2019 and GB/T 50065—2011 standards.After 5 horizontal zinc strips are placed in appropriate positions,the AC interference of the pipeline is reduced to an acceptable level.
作者
刘永峰
蓝卫
徐承伟
王影
LIU Yong-feng;LAN Wei;XU Cheng-wei;WANG Ying(PipeChina Guangdong Pipeline Co.,Ltd.,Guangzhou 510000,China;PipeChina Institute of Science and Technology,Langfang 065000,China;Oil and Gas Storage Company of China Petroleum Pipeline Engineering Co.,Ltd,Langfang 065000,China)
出处
《管道技术与设备》
CAS
2022年第6期53-60,共8页
Pipeline Technique and Equipment
关键词
输电线路
天然气管道
交流干扰
数值模拟
缓解措施
transmission line
natural gas pipeline
AC interference
numerical simulation
mitigation measures
