计量学报2024，Vol.45Issue(5)：626-630,5.DOI:10.3969/j.issn.1000-1158.2024.05.03
电气设备剩余电压测试仪校准方法
Calibration Method of Residual Voltage Tester for Electrical Equipment
摘要
Abstract
The principle of the residual voltage tester for electric equipment is analyzed.A method for calibrating the residual voltage amplitude and delay time parameters of the tester based on the standard resistance-capacitance network method is proposed.The influences of the time constant of the standard resistor and the loss factor of the standard capacitor on the calibration results are analyzed based on the equivalent model of the impedance components.The calculation method of the reference value of residual voltage and delay time is derived for the calibration.The residual voltage tester is calibrated by using a circuit network composed of a 1 MΩ AC standard resistor and a 1 μF standard capacitor and the results show that the mentioned method meets the calibration for the tester.The uncertainty analysis of the measurement results is carried out.The expanded uncertainty for the residual voltage amplitude is 1.1％and 1.2％for the delay time.The main uncertainty component is the measurement uncertainty of the loss factor of the standard capacitor.关键词
电学计量/剩余电压/延迟时间/阻容网络/损耗因数/不确定度Key words
electrical metrology/residual voltage/delay time/resistance-capacitance network/loss factor/measurement uncertainty分类
通用工业技术引用本文复制引用
冯建,胡俊杰,许峰,周碧红..电气设备剩余电压测试仪校准方法[J].计量学报,2024,45(5):626-630,5.基金项目
国家市场监督管理总局科技计划项目(2022MK025) （2022MK025）
上海市市场监督管理局科研项目(2023-06) （2023-06）
