计量学报2025，Vol.46Issue(6)：779-787,9.DOI:10.3969/j.issn.1000-1158.2025.06.01
基于对称屏蔽层的1300kV精密直流电压比例标准研制
Precision 1 300 kV DC High Voltage Ratio Standard with Symmetric Shielding
摘要
Abstract
The highest voltage level of the DC high voltage ratio standard was 1000 kV in China.It couldn't meet the tracing requirements of high voltage dividers in±1100kV DC ultra high voltage transmission project.Symmetric shielding structure was proposed which could reduce the impact of measurement resistance layer leakage current and transverse electric field.The radial potential difference of the measuring resistance layer was greatly reduced by the design of the equal potential inner shield resistor,and the leakage current of the measuring resistance layer and the transverse electric field were suppressed.And also,measurements of the resistance temperature coefficient,voltage coefficient and temperature rise tests were carried out.The 1300 kV precision DC voltage ratio standard was developed based on the basis and voltage simulation test was applied on the standard.The experiment shows that the 1300 kV DC high voltage ratio standard uncetainty is 3.8×10-5(k=2).关键词
电学计量/1300kV直流电压比例标准/对称屏蔽层/电压加法/不确定度评定Key words
electrical metrology/1300 kV DC high voltage ratio standard/symmetric shielding structure/voltage summation/uncertainty分类
通用工业技术引用本文复制引用
刘方明,李登云,刘浩,肖凯,杜百稳..基于对称屏蔽层的1300kV精密直流电压比例标准研制[J].计量学报,2025,46(6):779-787,9.基金项目
国家电网公司科技项目(5700-202320616A-3-2-ZN) （5700-202320616A-3-2-ZN）
