高电压技术2017，Vol.43Issue(10)：3173-3181,9.DOI:10.13336/j.1003-6520.hve.201709025005
±1100kV特高压直流穿墙套管交、直流局部放电试验净空区域优化
Optimization of Clearance Test Area for ± 1100 kV UHVDC Wall Bushing in AC and DC Partial Discharge Measurement
摘要
Abstract
In order to accurately measure partial discharge on ±1100 kV UHVDC wall bushing under AC and DC test voltage,and to verify the rationality of insulation design,material selection,and manufacturing process,we proposed an optimization method of clearance area with low background interference during partial discharge test.The electric field distribution of test area with wall bushing in the electromagnetic shielding hall was calculated using the finite element method under 1 273 kV AC and 1 683 kV DC voltage.On the basis of the AC partial discharge magnitude measurement results of a pointed grounding electrode in different locations,and using the DC partial discharge pulse measurement result of a high potential shielding ring in different areas,we obtained the reference electric fields for the optimization clearance area of ±1100 kV UHVDC wall bushing during the AC and DC partial discharge measurement test.The optimization method of AC and DC partial discharge clearance area is verified by using the comparative test of the background interference level.The optimization method of clearance area during partial discharge test proposed in this paper can be used to identify and suppress the partial discharge interference signal for other ±1100 kV UHVDC equipment.关键词
特高压直流穿墙套管/局部放电试验/宽域强电场/背景干扰信号/净空区域优化Key words
UHVDC wall bushing/partial discharge measurement/wide area of strong electric field/background interference signal/optimization of clearance area引用本文复制引用
汤浩,申泽军,张书琦,李金忠,吴超,吴广宁..±1100kV特高压直流穿墙套管交、直流局部放电试验净空区域优化[J].高电压技术,2017,43(10):3173-3181,9.基金项目
国家高技术研究发展计划(863 计划)(2014AA051804) （863 计划）
国家电网公司科技项目(GYB17201600207).Project supported by National High-tech Research and Development Program of China (863 Program) (2014AA051804),Science and Technology Project of SGCC(GYB17201600207). （GYB17201600207）
