直流分流器检定装置溯源校准方法探讨分析

Exploration and Analysis of Traceability and Calibration Methods for DC Shunt Verification Devices

为了确保直流分流器检定装置得到有效溯源,从而保障其以及其量值传递对象直流分流器的计量准确可靠,从而最终保障直流电能计量的准确可靠,梳理并厘清了宽量限、大电流的直流电能溯源关系,介绍了溯源关系链上的各计量器具工作原理,尤其重点介绍了直流分流器检定装置的溯源标准器与溯源校准方法。初步探讨分析了直流大电流以及直流小信号电压精准计量等关键技术,例如精密I/V转换技术以及多斜积分模数转换技术。进行了测量结果不确定度评价示例。所提方法能为实现清洁能源建设提供技术保障,将有助于保证能源交易的公平公正,经过探讨分析,本研究领域有必要更深入研究。

To ensure the effective traceability of DC shunt verification devices,thus guaranteeing the accuracy and reliability of both the device and the DC shunts it measures,this paper delineates the wide-range,high-current traceability relationships for DC energy.It introduces the working principles of each measuring instrument in the traceability chain,with a focus on the traceability standards and calibration methods of the DC shunt verification device.The paper also discusses and analyzes key technologies for precise measurement of large DC currents and small-signal DC voltages,such as precision I/V conversion and multiple-slope integral analog-to-digital conversion techniques.An example of uncertainty evaluation for measurement results is provided.The proposed methods offer technical support for the development of clean energy infrastructure and ensure fair energy trading.This field warrants further in-depth study based on the discussions and analyses presented.