Research on Traceability Methods for the Voltage Divider Ratio of Standard DC High-Voltage Dividers Based on Distributed Synchronous Data Acquisition Technique

LI Rui; WANG Jiafu; ZHANG Di; CAI Jinhui; SHAO Haiming; WANG Kun; LI Chuansheng; WANG Lixin

doi:10.3969/j.issn.1000-1158.2026.03.17

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Acta Metrologica Sinica ›› 2026, Vol. 47 ›› Issue (3) : 449-458. DOI: 10.3969/j.issn.1000-1158.2026.03.17

Research on Traceability Methods for the Voltage Divider Ratio of Standard DC High-Voltage Dividers Based on Distributed Synchronous Data Acquisition Technique

LI Rui ¹^,² ,
WANG Jiafu ² ,
ZHANG Di ² ,
CAI Jinhui ¹ ,
SHAO Haiming ² ,
WANG Kun ² ,
LI Chuansheng ² ,
WANG Lixin ²

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Abstract

The measurement of the voltage coefficient of the division ratio of a DC high-voltage divider is a critical step in the metrological traceability of standard DC high-voltage dividers. A division-ratio traceability method based on distributed synchronous data acquisition is proposed， and a dedicated measurement system is developed to realize the proposed approach. Using the above method and system， three ±100 kV DC high-voltage dividers that can be connected in series were used to verify the effectiveness of the new traceability method at -300 kV. The experimental results show that compared with the direct comparison method， the relative error of the new traceability method is no more than 0.006%， with an uncertainty of U _rel=3.7×10^-4， k=2， and the E _n value comparison result of the two methods is 0.15. This system can also be used to monitor the leakage current of the divider during use in a simple and efficient manner. For the ±300 kV series DC high-voltage divider calibrated in the experiment， the difference between the top and bottom currents of the divider at each voltage measurement point is no more than 0.007%.

Key words

electrical measurement / DC high-voltage divider / distributed synchronous sampling / leakage current / voltage ratio / metrological traceability

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LI Rui , WANG Jiafu , ZHANG Di , et al . Research on Traceability Methods for the Voltage Divider Ratio of Standard DC High-Voltage Dividers Based on Distributed Synchronous Data Acquisition Technique[J]. Acta Metrologica Sinica. 2026, 47(3): 449-458 https://doi.org/10.3969/j.issn.1000-1158.2026.03.17

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