A Systematic Framework for Tuning Open-Source Multifunctional IBR Models To Emulate OEM Black-Box Fault Dynamics

Chakraborty, S. [National Laboratory of the Rockies, Golden, CO (United States)]; Pinheiro, P. [University of Idaho]; Bainy, R. [University of Idaho]; Johnson, B. [University of Idaho]; Manson, S. [Schweitzer Engineering Laboratories]; Wang, J. [National Laboratory of the Rockies, Golden, CO (United States)]; Hoke, A. [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000267917812); Kruse, C. [Kauai Island Utility Cooperative]

doi:10.66816/po3492394

DOE OSTI · 3505045

A Systematic Framework for Tuning Open-Source Multifunctional IBR Models To Emulate OEM Black-Box Fault Dynamics

Chakraborty, S. [National Laboratory of the Rockies, Golden, CO (United States)]·Pinheiro, P. [University of Idaho]·Bainy, R. [University of Idaho]·Johnson, B. [University of Idaho]·Manson, S. [Schweitzer Engineering Laboratories]·Wang, J. [National Laboratory of the Rockies, Golden, CO (United States)]·Hoke, A. [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000267917812)·Kruse, C. [Kauai Island Utility Cooperative]

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Abstract

This paper presents a systematic framework to tune a generic IBR EMT model to match with an OEM provided balckbox inverter model based on the fault current responses. The key learnings and findings are summarized as follows: The tunable key parameters include inner control loops and current limiters to align the fault current magnitude, sequence content, and phase trajectories with the OEM models across diverse fault type and locations. The tuned model's fidelity is validated through comparative analysis with an OEM blackbox model, assessing both the fault current response and the responses of multiple relay elements. The results demonstrate the tuned generic model can trigger relay decision logic that is identical or near identical to that of the OEM model, thus generating very good match model for fault studies.

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Chakraborty, S. [National Laboratory of the Rockies, Golden, CO (United States)], Pinheiro, P. [University of Idaho], Bainy, R. [University of Idaho], Johnson, B. [University of Idaho], Manson, S. [Schweitzer Engineering Laboratories], Wang, J. [National Laboratory of the Rockies, Golden, CO (United States)], Hoke, A. [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000267917812), Kruse, C. [Kauai Island Utility Cooperative]. 2026-08-21. A Systematic Framework for Tuning Open-Source Multifunctional IBR Models To Emulate OEM Black-Box Fault Dynamics. https://doi.org/10.66816/po3492394

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