为了研究直流输电线路与埋地油气管道平行接近和交叉跨越带来的电磁环境问题,保证人身与管道安全,提高走廊资源利用率,针对直流输电线路对埋地油气管道的电磁影响进行仿真计算.使用CDEGS软件建立了直流线路交叉跨越油气管道的仿真模型,针对±500 kV直流输电线路各种运行工况,仿真计算了交叉处油气管道上的干扰电压分布.计算结果表明:±500 kV直流线路在正常运行、短路故障及杆塔遭受雷击时对油气管道的电磁影响程度均符合限值要求.研究结果对直流线路和油气管道同走廊时的安全运行具有重要的实际意义,可为相关工程设计提供一定的指导.
In order to study the electromagnetic environment problem brought by long-distance parallelism and crossing between transmission lines and oil/gas pipeline, guarantee the safety of humans and pipeline, and improve the utilization rate of land resources, the electromagnetic effects on underground oil/gas pipe-line due to HVDC transmission line was simulated. The simulation model of DC transmission line cross-ing oil/gas pipeline was established using CDEGS software, then the induced voltage distribution along the oil/gas pipeline caused by the HVDC transmission line under various operating status was calculated. The results show that the degree of electromagnetic effects on the oil/gas pipeline all meet the limit value requirements when the ± 500 kV DC transmission line is in normal operation, in ground fault, and subjected to lightning stroke. This research results have important practical value to the safety operation of HVDC transmission line and oil/gas pipeline running in the same, and can also provide technical support for engineering design and construction.
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