Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds

Ana Milagros Fuentes Herrera; Miguel Angel Olivan; Julio J. Melero; Angela Espin-Delgado; Stefan Svensson; Pieter van der Kamp; Ernest Houtzager; Jari Hällström; Tapio A. Lehtonen

doi:10.1109/AMPS66841.2025.11219953

Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds

Ana Milagros Fuentes Herrera
, Miguel Angel Olivan
, Julio J. Melero
, Angela Espin-Delgado
, Stefan Svensson
, Pieter van der Kamp
, Ernest Houtzager
, Jari Hällström
, Tapio A. Lehtonen

SU1202 Electrical metrology

Center for Research Resources and Energy Consumption (CIRCE)
University of Zaragoza
RISE Research Institutes of Sweden
Dutch Metrology Institute (VSL)

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

The implementation of digital substations is becoming increasingly common and one of the principal elements is the stand-Alone merging unit (SAMU). Therefore, the calibration of the SAMU is essential to ensure the accuracy and reliability of measurements, as the operation of the protection equipment depends on them. This study focuses on evaluating testbeds used in different laboratories to calibrate the same SAMU: CIRCE, RISE, VSL, and VTT. Following IEC 61869-13 standard, magnitude and phase displacement were calibrated on all channels for current and voltage. Additionally, the compatibility among laboratories was evaluated using a compatibility index, confirming their mutual compatibility in the calibration process.

Original language	English
Title of host publication	2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS)
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	1-6
Number of pages	6
ISBN (Electronic)	978-1-6654-7765-9
ISBN (Print)	978-1-6654-7766-6
DOIs	https://doi.org/10.1109/AMPS66841.2025.11219953
Publication status	Published - 2025
MoE publication type	A4 Article in a conference publication
Event	2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS) - Bucharest, Romania Duration: 24 Sept 2025 → 26 Sept 2025

Conference

Conference	2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS)
Country/Territory	Romania
City	Bucharest
Period	24/09/25 → 26/09/25

Funding

The authors would like to acknowledge project 21NRM02 Digital-IT, which has received funding from the European Partnership on Metrology, co-financed from the European Union's Horizon Europe Research and Innovation Programme and by the Participating States. CIRCE acknowledges ESTELAR Project-101192574, funded under Horizon Europe Innovation Framework Programme.

Keywords

Substations
Current measurement
Merging
Laboratories
Calibration
Power system reliability
Indexes
Reliability
Protection
Standards
SAMUs
calibration
compatibility index
testbed

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10.1109/AMPS66841.2025.11219953

Cite this

Herrera, A. M. F., Olivan, M. A., Melero, J. J., Espin-Delgado, A., Svensson, S., Kamp, P. V. D., Houtzager, E., Hällström, J., & Lehtonen, T. A. (2025). Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds. In 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS) (pp. 1-6). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/AMPS66841.2025.11219953

@inproceedings{8c0ae70b9f0546289cba7bfaac81720b,

title = "Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds",

abstract = "The implementation of digital substations is becoming increasingly common and one of the principal elements is the stand-Alone merging unit (SAMU). Therefore, the calibration of the SAMU is essential to ensure the accuracy and reliability of measurements, as the operation of the protection equipment depends on them. This study focuses on evaluating testbeds used in different laboratories to calibrate the same SAMU: CIRCE, RISE, VSL, and VTT. Following IEC 61869-13 standard, magnitude and phase displacement were calibrated on all channels for current and voltage. Additionally, the compatibility among laboratories was evaluated using a compatibility index, confirming their mutual compatibility in the calibration process.",

keywords = "Substations, Current measurement, Merging, Laboratories, Calibration, Power system reliability, Indexes, Reliability, Protection, Standards, SAMUs, calibration, compatibility index, testbed",

author = "Herrera, \{Ana Milagros Fuentes\} and Olivan, \{Miguel Angel\} and Melero, \{Julio J.\} and Angela Espin-Delgado and Stefan Svensson and Kamp, \{Pieter van der\} and Ernest Houtzager and Jari H{\"a}llstr{\"o}m and Lehtonen, \{Tapio A.\}",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS) ; Conference date: 24-09-2025 Through 26-09-2025",

year = "2025",

doi = "10.1109/AMPS66841.2025.11219953",

language = "English",

isbn = "978-1-6654-7766-6",

pages = "1--6",

booktitle = "2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS)",

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address = "United States",

}

Herrera, AMF, Olivan, MA, Melero, JJ, Espin-Delgado, A, Svensson, S, Kamp, PVD, Houtzager, E, Hällström, J & Lehtonen, TA 2025, Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds. in 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS). IEEE Institute of Electrical and Electronic Engineers, pp. 1-6, 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS), Bucharest, Romania, 24/09/25. https://doi.org/10.1109/AMPS66841.2025.11219953

Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds. / Herrera, Ana Milagros Fuentes; Olivan, Miguel Angel; Melero, Julio J. et al.
2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS). IEEE Institute of Electrical and Electronic Engineers, 2025. p. 1-6.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Olivan, Miguel Angel

AU - Melero, Julio J.

AU - Espin-Delgado, Angela

AU - Svensson, Stefan

AU - Kamp, Pieter van der

AU - Houtzager, Ernest

AU - Hällström, Jari

AU - Lehtonen, Tapio A.

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AB - The implementation of digital substations is becoming increasingly common and one of the principal elements is the stand-Alone merging unit (SAMU). Therefore, the calibration of the SAMU is essential to ensure the accuracy and reliability of measurements, as the operation of the protection equipment depends on them. This study focuses on evaluating testbeds used in different laboratories to calibrate the same SAMU: CIRCE, RISE, VSL, and VTT. Following IEC 61869-13 standard, magnitude and phase displacement were calibrated on all channels for current and voltage. Additionally, the compatibility among laboratories was evaluated using a compatibility index, confirming their mutual compatibility in the calibration process.

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KW - Current measurement

KW - Merging

KW - Laboratories

KW - Calibration

KW - Power system reliability

KW - Indexes

KW - Reliability

KW - Protection

KW - Standards

KW - SAMUs

KW - calibration

KW - compatibility index

KW - testbed

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DO - 10.1109/AMPS66841.2025.11219953

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BT - 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS)

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 2025 IEEE 15th International Workshop on Applied Measurements for Power Systems (AMPS)

Y2 - 24 September 2025 through 26 September 2025

ER -

Design and compatibility of different Stand Alone Merging Unit (SAMU) calibration testbeds

Abstract

Conference

Funding

Keywords

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