摘要
金中直流输电工程是南方电网十二五期间重大西电东送项目,该工程与中缅油气管道存在多处平行接近和交叉跨越的现象。为缓解这种情况所带来的电磁环境问题,本文针对金中直流工程对中缅油气管道的电磁影响进行仿真研究。利用CDEGS软件建立了金中直流工程与中缅油气管道2处平行和交叉模型,仿真研究了直流线路正常运行、单极接地故障、雷击线路时各跨越处管道金属电压及管道防腐层电压分布。通过仿真结果与相关限值的比较,定量评估了直流线路对油气管道的电磁影响程度,并对不符合限值的跨越点处的杆塔位置设计提出了建议。本研究结果对金中直流输电工程和中缅油气管道的安全运行具有重要的实际意义,并可为高压直流输电线路与埋地油气管道共走廊时的设计提供一定工程指导和定量依据。
Yunnan-Guangxi HVDC transmission engineering is one of the important West-East electricity transmission projects in the twelfth five-year plan of China Southern Power Grid,and it is facing the circumstances of long-distance parallelism and crossing with China-Myanmar oil / gas pipeline. To alleviate the electromagnetic influence on this condition,the simulation study of electromagnetic effects on China-Myanmar oil / gas pipeline due to Yunnan-Guangxi HVDC transmission line was conducted in this paper. The computational model for the two crossings between these two projects was established using CDEGS software. Then,the voltage distribution on the pipeline and coating of the pipeline caused by the power line on condition of normal operation,single-pole ground fault,and being struck by lightning was studied to make a quantitative evaluation of the degree of electromagnetic influence,and some suggestions for unqualified crossings were proposed by the comparison between calculation results with the limits. This research is of significant value to the safety operation of these two projects,and can also provide a quantitative guidance and technical support for HVDC transmission engineering and the oil / gas pipeline construction.
出处
《电测与仪表》
北大核心
2016年第8期38-44,共7页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51307060)
