摘要
现有的交流溯源直流的校准方法溯源环节复杂,误差源多.本文提出了一种误差源少、电气结构简单且精度高的交流溯源直流的校准方法,电流通道采用电流/电压变换溯源方法.通过AD采样交流电压,用一个高精度、高稳定度的直流电压标准作为AD的参考电压,从而使交流电压溯源到直流电压.对这种方法进行理论误差分析,得到交流电压测量的误差为8×10-6;通过实验验证,得到这种方法的电压和电流测量误差分别为6.3×10-6和1.06×10-6.证明了这种校准方法适用于交流电压和电流的溯源校准工作,简化了量值传递的步骤.
The existing methods of AC traceable DC are complex, and have many error sources. A method of AC traceable to DC, which has less error sources, the simple electrical configuration and high precision, is proposed. AC voltage traces to the DC voltage by AD sampling AC voltage with a high-precision, high stabili- ty DC voltage standard as the reference voltage for AD. The traceable method of current channel adopts cur- rent/voltage conversion. The AC voltage measurement error of this method is 8 x 10-6 through the theoretical error analysis. The voltage and current measurement error of this method are 6.3 x 10-6 and 1.06 x 10_6 through the experiments. It proves that this method is suitable for AC voltage and current traceable calibra- tion. It simplifies the steps of value transfer and there is significant practical value.
出处
《测试技术学报》
2013年第5期399-405,共7页
Journal of Test and Measurement Technology
关键词
交流溯源直流
量值传递
电流
电压变换
校准
AC traceable DC
value transfer
current/voltage conversion
calibration
