Abstract
Reliable and accurate operation of complete digital acquisition chain is very important for performance of PAC devices within modern power systems. Even a perfect algorithm can operate unreliably if quality of Sampled Values (SV) does not secure correct information about measured primary currents and voltages. History of SV development from the beginning of IEC 61850 standard is described within this chapter as well as latest requirements as provided in IEC 61869-9 standard. Different peculiarities of current and voltage instrument transformers (conventional as well as LPITs) are presented as well as some specific needs of different PAC functions for current and future power systems, also considering their decreasing inertia. Some challenges for future development of digital acquisition chain are presented at the end of chapter.
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References
IEC 61850-7-4 Basic Communication StructureâCompatible Logical Node Classes and Data Object Classes, Eddition 2.0, 2010-03. Copyright © 2016 IEC Geneva, Switzerland. www.iec.ch
IEC 61850 TISSUE 1176 dated 27.10.2019;Â https://iec61850.tissue-db.com/tissue/1176
IEC 61869-9 (2016) Instrument transformers - Part 9: Digital interface for instrument transformers, https://webstore.iec.ch/publication/24663. Copyright © 2016 IEC Geneva, Switzerland. www.iec.ch
IEC 61850-9-2LE: UCA IUG âImplementation Guideline for Digital Interface to Instrument Transformers using IEC 61850â9â2â http://iec61850.ucaiug.org/Implementation%20Guidelines/DigIF_spec_9-2LE_R2-1_040707-CB.pdf
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CIGRE TB-768 (2019) Protection requirements on transient response of digital acquisition chain https://e-cigre.org/publication/768-protection-requirements-on-transient-response-of-digital-acquisition-chain
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Zakonjšek, J. (2023). CT/VT Sampled Value Acquisition Applied to IEC 61850. In: Bishop, P., Nair, NK.C. (eds) IEC 61850 Principles and Applications to Electric Power Systems. CIGRE Green Books(). Springer, Cham. https://doi.org/10.1007/978-3-031-24567-1_11
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DOI: https://doi.org/10.1007/978-3-031-24567-1_11
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