UHVDC输电线路可听噪声的探析

Analysis of UHVDC Transmission Lines' Audible Noise

介绍UHVDC输电线路可听噪声产生的原因及特性,不同的气候条件、分裂导线数、分裂间距、导线截面积、海拔等对可听噪声的影响,可听噪声的计算方法.对投运后的±800 kV复奉UHVDC输电线路现场可听噪声进行分析,提出相应的防范建议,为今后UHVDC输电线路设计、运维提供现场运行资料.

Analysis of UHVDC Transmission Lines＇ Audible NoisesBIAN Yu-ping 1, NI Liang-hual, KANG Yu-bin 2（ 1. School of Electric Power Engineering; Nanjing Institute of Technology, Nanjing 211167, China; 2. Maintenance Branch of Jiangsu Electric Power Company, Nanjing 211102, China）Abstract： This paper introduces the causes, characteristics and control indicators of UHVDC transmission lines＇ audible noises, and the effects of climatic conditions, the number of bundle conductor, split spacing, conductor cross-sectional area and altitudes on audible noises. The method used to calculate audible noises is then expounded. An analysis is carried out to study the audible noises of ＋ 800 kV Fufeng UHVDC transmission lines in field operation. Some preventive suggestions are provided in the hope of supporting on-site operation data for designs of UHVDC transmission lines, operation and maintenance.