Abstract：A multi-decade 1000V inductive voltage divider (IVD) was established at the National Institute of Metrology (NIM) in China to function as the 1000V voltage ratio standard at the power frequency. It can provide a wide output ratio ranging from 1×10-8 to 1. An error compensation method, based on the transformer injection, was introduced to improve the output ratio accuracy. An improved bootstrap calibration method with triaxial shielding was presented, and a multi-ratio reference transformer was designed to calibrate the multi-decade IVD for combinational usage. The accuracy of the mentioned IVD is better than 1×10-7 and the calibration expanded uncertainty less than 2×10-8.
［1］IEC 60618 Inductive voltage dividers［S］. 1978.
［2］Small G W, Budovsky I F, Gibbes A M, et al.Precision Three-stage 1000 V/50 Hz Inductive Voltage Divider［J］. IEEE Trans. Instrum. Meas., 2005, 54(2):600-603.
［3］BudovskyI F, Small G W, Gibbes A M, et al. Calibration of 1000 V/50 Hz Inductive Voltage Dividers and Ratio Transformers［C］// CPEM 2004. London, 2004: 322-323.
［4］何小兵. 基于参考电势法校验感应分压器的几种校验方法综述与分析［C］// 第4届全国电磁计量大会. 桂林, 2007.
［5］Wang W. Establishing of 1000 V Multi-decade Inductive Voltage Divider Standard at NIM［C］// Proc CPEM 2016. Ottawa, Canada, 2016.
［6］Zhao J, Yang Y, Lu Y, et al. An Improved Bootstrap Method for the Calibration of Inductive Voltage Dividers［C］// CPEM 2012. Washington D.C., 2012: 690-691.
［7］王雪,郑天宇,项琼, 等.气隙对电流比较仪磁屏蔽屏蔽效能影响的研究［J］. 计量学报, 2018, 39(4): 549-553.
Wang X, Zheng T Y, Xiang Q, et al. Research on Air Gap Influence on Magnetic Shielding Effectiveness for Current Comparator［J］. Acta Metrologica Sinica, 2018, 39(4): 549-553.
［8］张煌辉,林飞鹏,邵海明, 等.直流高压电阻分压器泄漏电流测量研究［J］. 计量学报, 2018, 39(1): 83-88.
Zhang H H, Lin F P, Shao H M, et al. Research on Measuring Leakage Current of DC High-voltage Resistive Divider［J］. Acta Metrologica Sinica, 2018, 39(1): 83-88.
［9］Deacon T A . Accurate (2 parts in 107) inductive voltage divider for 20~200Hz［J］.Proceedings of the Institution of Electrical Engineers , 1970, 117(2):634-640.
［10］He X B, Zhang X. A new error compensation method of inductive voltage divider［C］// Proc CPEM 2008. Colorado, USA, 2008:238-239.
［11］Homan D N, Zapf T L. Two stage, guarded inductive voltage divider for use at 100 kHz［J］.ISA Transactions, 1970, 9:201-209.
［12］Hanke R. An improved straddling method with triaxial guards for the calibration of inductive voltage dividers at 1592 Hz［J］. IEEE Trans Instrum Meas,1989, 38(5):974-978.
［13］Zhang G M, Zhao F Z. Generalized Injected Voltage Method for the Establishment of Multidecade Inductive Voltage Divider Standard［J］. IEEE Trans Instrum Meas,1987,36(1): 9-12.
