Accuracy improvement of the stochastic digital electrical energy meter

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• 作者：Marjan Urekar^a ; ^{urekarm@uns.ac.rs} ; Dragan Pejic^a ; Vladimir Vujicic^b ; Svetlana Avramov-Zamurovic^c
• 关键词：Stochastic processes ; Energy measurement ; Smart grid ; Accuracy ; Measurement uncertainty ; Flash ADC ; Sampling ; Precision
• 刊名：Measurement
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：98
• 期：Complete
• 页码：139-150
• 全文大小：2700 K
• 卷排序：98

文摘

Stochastic digital electrical energy meter SDEEM has high precision. SDEEM needs accuracy improvement to be used as a power grid meter standard. SDEEM is based on fast, 2-bit flash ADCs with large offsets affecting the accuracy. Comparator input cross-switching offset suppression method is tested in a prototype. Offset suppression is 80 dB, enabling 70 ppm accuracy of a stochastic instrument.