Abstract:

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.

Key words: 500 kV double-circuit, vertical arrangement, compact power transmission line, electromagnetic environment