500kV受电通道工程对高压天然气管道造成的干扰研究  

Research on Interference Caused by 500 kV Power Receiving Channel Project to High Pressure Natural Gas Pipeline

作　　者：胡贵斌 金兆波 倪凯 HU Guibin;JIN Zhaobo;NI Kai(Guangdong Pipe Network Co.,Ltd.,PipeChina;Daqing Huitong Construction and Installation Engineering Co.,Ltd.)

机构地区：[1]国家管网集团广东省管网有限公司 [2]大庆市汇通建筑安装工程有限公司

出　　处：《油气田地面工程》2024年第6期37-43,共7页Oil-Gas Field Surface Engineering

摘　　要：新建500kV受电通道工程与已建高压天然气管道存在多处交叉及长距离并行,为保证管道的安全运行,降低交流杂散电流对管道干扰影响,采用数值模拟方法,构建高压交流输电线路对管道交流干扰的计算模型,模拟计算了输电线路在常态运行以及故障运行状态下对管道的干扰影响,并根据相关标准要求,对管道受交流干扰程度进行分析评价。结果显示,当输电线路稳态运行时,交流电压及交流电流密度均超出相关标准要求,交流干扰程度判断为“强”,应采取交流干扰防护措施。针对超出交流干扰标准要求限值的管段,利用水平式锌带与深井式锌带相结合的方式,采用数值模拟技术防护方案进行设计,实现了高压交流输电线路对埋地钢质管道的交流干扰防护,保障了管道长期安全运行。借助数值模拟技术对管道交流干扰进行分析评价以及干扰防护设计,为今后其他类似工程问题提供了借鉴和参考。There are many intersections and long-distance parallel between the new 500 kV power receiving channel project and the existing high-pressure natural gas pipeline.In order to ensure the safe operation of the pipeline and reduce the impact of stray current interference,the numerical simulation method is used to build a calculation model of AC interference of high-voltage AC transmission line to pipeline.The interference effects of the transmission line on the pipeline under normal operation and fault operation are simulated and calculated,and the AC interference degree to pipeline according to the requirements of relevant standards are analyzed and evaluated.The results show that when the transmission line is in steady-state operation,the AC voltage and AC current density exceed the requirements of relevant standards,and the AC interference degree is judged as"strong",so AC interference protection measures should be taken.For the pipeline section exceeding the limit of AC interference standard,a combination of horizontal zinc strip and deep well zinc strip is used,and a numerical simulation technology protection scheme is adopted for design,which realizes the AC interference protection of buried steel pipeline caused by high-voltage AC transmission line,and ensures the long-term safe operation of the pipeline.With the help of numerical simulation technology,the analysis and evaluation of pipeline AC interference and the design of interference protection can provide reference for other similar engineering problems in the future.

关 键 词：天然气管道 输电线路 交流干扰 防护措施 

分 类 号：TE973[石油与天然气工程—石油机械设备]