Open AccessResearch on the Detection Technology of Audible Noise Sources of UHVDC Transmission Lines
Author(s) -
Jianxun Lv,
Penghui Zhao,
Haiwen Yuan,
Xinyu Liu
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2166/1/012059
Subject(s) - sound intensity , acoustics , intensity (physics) , noise (video) , electric field , transmission (telecommunications) , sound transmission class , conductor , sound (geography) , computer science , electrical engineering , optics , engineering , physics , materials science , artificial intelligence , composite material , quantum mechanics , image (mathematics)
In order to directly and deeply study the law and characteristics of audible noise sources of UHVDC transmission lines, a method of detecting the sound intensity vector at the source position in the bundle conductor is proposed. First, the structure of the sound intensity detection device is designed, and the method for calculating the sound intensity vector is deduced based on this prototype. Then, the simulation of the electric field distribution on the surface of the device in the UHV extreme electric field environment is carried out. The change of the maximum electric field intensity and the influencing factors are obtained, which proves that the proposed detection device has the adaptability of the UHV electric field environment. Finally, the measurement error of the proposed detection device is analyzed. The results show that in the frequency range of 100∼5000Hz, the theoretical error of the sound intensity vector components and the total sound intensity level obtained by the measurement device in three directions are less than 2dB, which can meet requirements of sound intensity detection at the sound source.