电能表检定装置不确定度评定中误差源的选择

Selection of error source in uncertainties appraisement for electricity energy meter verification device

在进行电能表检定装置B类不确定度评定中,影响不确定度评定结果的主要因素是各种误差源,用电能表检定装置整体作为误差源,替代装置中测量部分分别独立的误差源,对电能表检定装置不确定度评定的影响进行分析,并通过实例说明用交流电能表检定装置标定误差替代交流电能表检定装置内部各器件误差的方法是可行的。应用结果表明:该方法在分析计算中可减少计算步骤,简化分析方法。

In B class uncertainty appraisement of electric energy meter verification device,the main factor affecting uncertainty appraisement result is all sorts of error source,using electric energy meter verification device integration as error source substitute each independent error source in measure ment part to analyze the influence of uncertainty appraisement of electric energy meter verification de vice,and through the example explains the method using the demarcating error of alternating current meter verification device to substitute the cumulate error of each measurement part in alternating cur rent meter verification device is feasible.The application result shows that this method can reduce cau lationstepandsimplyanalysismethod.