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基于分布式同步数据采集法的标准直流高压分压器分压比溯源方法研究
李睿, 王家福, 张迪, 蔡晋辉, 邵海明, 王锟, 李传生, 王立新
计量学报 ›› 2026, Vol. 47 ›› Issue (3) : 449-458.
PDF(2594 KB)
PDF(2594 KB)
基于分布式同步数据采集法的标准直流高压分压器分压比溯源方法研究
Research on Traceability Methods for the Voltage Divider Ratio of Standard DC High-Voltage Dividers Based on Distributed Synchronous Data Acquisition Technique
直流高压分压器分压比电压系数的测量,是标准直流高压分压器计量溯源中非常重要的步骤。提出一种基于分布式同步数据采集法的标准直流高压分压器分压比溯源方法,并设计了对应的测量系统。使用3台可串联使用的±100 kV直流高压分压器,在-300 kV下验证了新溯源方法的有效性。实验结果表明:与直接比较法相比,新溯源方法的相对误差不大于0.006%,不确定度为U rel=3.7×10-4, k=2, 2种方法的E n值比对结果为0.15。利用该系统还可以简洁高效地监测分压器在使用过程中的泄漏电流,对于实验中校准的±300 kV串联式直流高压分压器,各电压测量点下分压器顶端电流与底端电流的差异不大于0.007%。
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%.
电学计量 / 直流高压分压器 / 分布式同步采样 / 泄漏电流 / 分压比 / 计量溯源
electrical measurement / DC high-voltage divider / distributed synchronous sampling / leakage current / voltage ratio / metrological traceability
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