Characterization of Sampled Value Streams in Non Real-Time Calibration Systems

Marco Agustoni and Guglielmo Frigo
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Marco Agustoni: Laboratory of Electrical Energy and Power, Swiss Federal Institute of Metrology METAS, Lindenweg 50, 3003 Bern-Wabern, Switzerland
Guglielmo Frigo: Laboratory of Electrical Energy and Power, Swiss Federal Institute of Metrology METAS, Lindenweg 50, 3003 Bern-Wabern, Switzerland

Energies, 2022, vol. 15, issue 9, 1-16

Abstract: The digital transformation of electrical substations relies on the communication protocols introduced in the IEC Std 61850. In particular, the Sampled Value data format is expected to be employed in an ever-increasing number of measurement applications and devices. In this context, National Metrological Institutes are required to develop calibration infrastructures capable of dealing with synchronous analog and digital input and output channels. In this paper, we characterize the performance of the METAS calibrator in terms of transmission latency and publishing rate stability. In particular, we discuss the feasibility of meeting the stringent requirements of meterological applications even in a non real-time operating system. To this end, an enhanced software library and measurement procedure are introduced. The proposed results confirm the quasi-deterministic behavior of the calibrator and proves its refined precision and stability with respect to commercial devices.

Keywords: IEC Std 61850-9-2; Sampled Values; calibration; transmission latency; publishing rate; digital substation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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