The Characteristics of Audible Noise Produced by Corona of HVDC Conductors after Raining
Liu Yuanqing1, Yang Xiaohong1, Jiang Maizhe1,2, Shi Lipeng1,2, Li Zhenjie1,2
1. China Electric Power Research Institute Beijing 100192 China; 2. School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China
Abstract Audible noise is an important factor to be considered in the design of HVDC transmission lines. However, the characteristics of audible noise of conductors after rain are still lacking in-depth study. Based on the outdoor corona cage test platform, characteristics of audible noise generated by HVDC split conductor under corona discharge after raining are studied in this paper. Test results show that the audible noise generated by conductors increases gradually with time after raining. The stronger the corona discharge of the conductor, the shorter the time required for the audible noise produced by the corona to stabilize. When the corona discharge is stable at high field strength and then the voltage is reduced to weak corona discharge, the audible noise produced by corona discharge is still stable. Results of this paper are of great significance to the measurement of audible noise and environmental protection evaluation of UHVDC transmission lines.
Liu Yuanqing,Yang Xiaohong,Jiang Maizhe等. The Characteristics of Audible Noise Produced by Corona of HVDC Conductors after Raining[J]. Transactions of China Electrotechnical Society, 2020, 35(zk2): 371-376.
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2020, Vol. 35 
