高电压技术2024，Vol.50Issue(3)：994-1002,9.DOI:10.13336/j.1003-6520.hve.20221285
±800 kV换流变阀侧套管温度场仿真与大电流温升试验分析
Simulation and Experimental Analysis of±800 kV Converter Transformer Valve-side Bushing Under High Current
摘要
Abstract
With the development of high voltage direct current(HVDC)projects in China,transmission capacity keeps growing,which makes the heating problem of resin impregnated paper(RIP)bushing more and more serious.Facing the challenge of further increasing transmission capacity of±800 kV UHVDC project,we proposed and verified a design scheme of RIP converter transformer valve-side bushing by simulation and temperature rise test in order to avoid safety problem caused by serious heating and excessive temperature of RIP bushing.First,the hot-spot temperature of bushing was reduced by introducing outer-winding tube structure and increasing conductor diameter in the design scheme.Then,an improved calculation method for temperature distribution of RIP bushing was proposed and used to verify the thermal design of bushing.Finally,the bushing manufactured on the basis of the design scheme was verified by temperature rise test.The simulation and temperature rise test results show that the design scheme of RIP converter transformer valve-side bushing can meet the engineering requirements,whose current-carrying capacity can reach 6736 A(equivalent industrial frequency current).关键词
胶浸纸套管/换流变阀侧套管/直流输电工程/计算流体力学/温升试验Key words
RIP bushing/converter transformer valve-side bushing/HVDC engineering/CFD/temperature rise test引用本文复制引用
谢更生,史石峰,王琪林,王青于,刘鹏,彭宗仁..±800 kV换流变阀侧套管温度场仿真与大电流温升试验分析[J].高电压技术,2024,50(3):994-1002,9.基金项目
国家电网公司科技项目(SGLNDK00KJJS1900250). Project supported by Science and Technology Project of SGCC(SGLNDK00KJJS1900250). （SGLNDK00KJJS1900250）
