500kV双回路垂直排列紧凑型输电线路电磁环境

Electromagnetic Environment of 500 kV Double-Circuit Vertical Arrangement Compact Power Transmission Line

500 kV双回路垂直排列紧凑型线路主要应用于限宽、限高条件下的双回输电线路建设。针对500 kV双回垂直排列紧凑型塔压缩相间距离和回间距离后电磁环境水平未知,且主要应用于人口密集地区,电磁环境要求高的情况,对该塔型的工频电场、可听噪声和无线电干扰进行了计算和分析。与常规塔型比较,得出了该新型塔电磁环境指标满足设计规程要求并较优的结论;同时对影响电磁环境的因素进行了研究,为优化设计方案提供依据。

500 kV double-circuit vertical arrangement compact transmission line was introduced firstly, which was mainly used in double-circuit transmission line construction with the limit of width and height. Aimed to the unknown electromagnetic environment of this compact transmission line with phases distance compressed, and its higher requirement of electromagnetic environment in densely populated area, the power frequency electric field, audible noise and radio interference were calculated and analyzed, compared with other regular types of towers. Conclusion has been drawn that the electromagnetic environment of this new compact line could better meet the design requirement. Finally, the factors that influence electromagnetic environment were also studied to provide the basis for the optimization of tower design scheme.