CAJ | 학술논문

在数字化变电站中，由于网络传输质量而引起的数字量输入采样数据丢失是影响电能计量准确度的重要因素。而传统的线性插值、二次拉格朗日插值、曲线拟合等数据修正方法在计算精度和计算资源上无法同时满足计量装置的需求。本文利用采样值数学模型推导出了一种基于正弦曲线的插值方法。通过实验数据比对分析，使用该方法设计的软件算法占用计算资源较小，并可以显著地降低网络数据传输过程中丢帧所带来的误差影响，提高数字化变电站电能表的电能计量精度。
재수자화변전참중，유우망락전수질량이인기적수자량수입채양수거주실시영향전능계량준학도적중요인소。이전통적선성삽치、이차랍격랑일삽치、곡선의합등수거수정방법재계산정도화계산자원상무법동시만족계량장치적수구。본문이용채양치수학모형추도출료일충기우정현곡선적삽치방법。통과실험수거비대분석，사용해방법설계적연건산법점용계산자원교소，병가이현저지강저망락수거전수과정중주정소대래적오차영향，제고수자화변전참전능표적전능계량정도。
In digital substation, the loss of sampled value caused by the quality of network transmission is an important factor in the accuracy of electric energy measurement. The methods of linear interpolation, Lagrange interpolation and curve fitting are not ap-propriate to the metering device because of the computational accuracy and the computing resource. This paper introduces an inter-polation method which is extrapolated based on the mathematical model of sampled value. The analysis of the experimental results shows that the method can deduce the margin of error caused by the data loss and improve the accuracy of measurement.