Research on Interference Caused by 500 kV Power Receiving Channel Project to High Pressure Natural Gas Pipeline
There are many intersections and long-distance parallel between the new 500 kV power re-ceiving 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 trans-mission line is in steady-state operation,the AC voltage and AC current density exceed the require-ments 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 simu-lation technology protection scheme is adopted for design,which realizes the AC interference protec-tion 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 evalu-ation of pipeline AC interference and the design of interference protection can provide reference for oth-er similar engineering problems in the future.
natural gas pipelinepower transmission lineAC interferenceprotection measures
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