Audible noise evaluation for six-phase overhead lines transformed from existing three-phase double circuit infrastructures with uprated voltages

作     者：Qi Li Yanzhou Li Simon Rowland Jianlin Hu Ian Cotton Xingliang Jiang Qi Li;Yanzhou Li;Simon Rowland;Jianlin Hu;Ian Cotton;Xingliang Jiang

作者机构：State Key Laboratory of Power Transmission Equipment&System Security and New TechnologyElectrical Engineering SchoolChongqing UniversityChongqingChina Department of Electrical and Electronic EngineeringThe University of ManchesterManchesterUK 

出 版 物：《High Voltage》 (高电压（英文）)

年 卷 期：2022年第7卷第5期

页      面：866-876页

核心收录：

学科分类：080804[工学-电力电子与电力传动] 080805[工学-电工理论与新技术] 0808[工学-电气工程] 08[工学] 

基　　金：National Grid Plc National Grid State Grid Corporation of China, SGCC 

主　　题：phase double transformed 

摘      要：The drive to reduce carbon emissions and meet climate change targets set by governments worldwide has led to the growth of renewable energy sources and electric vehicles in recent *** intermittent generation and centralised demand require increased transmission capacities when operating associated power *** transmission lines are not capable of meeting planned *** many countries,obtaining a new right of way to build an overhead line(OHL)is increasingly *** is therefore an urgent need to study techniques for transmission line *** increasing voltages is not feasible because elevated surface potential gradient at conductor surfaces increases audible noise(AN)levels *** feasibility of high phase order,especially six-phase,transmission techniques has been previously demonstrated,and it has been proved to be an effective way to uprate existing three-phase double circuit OHLs with increased *** study analyses two typical overhead line structures,whose conductor surface potential gradient and AN level are *** average and maximum surface potential gradient of the six-phase OHL are 18.5%and 18.6%lower than that of the three-phase *** AN of the six-phase single circuit OHL is predicted to be 6.33 and 6.45 dBA lower than that of the three-phase double circuit OHL after the voltage is increased by 45%and 50%for the lines *** is shown that six-phase OHLs can increase capacity by allowing elevating phase voltages without increasing acoustic noise levels.