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Fault Containment and Electrothermal Certificates for a Bipolar HVDC Interrupter

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Printed title: Fault Containment and Electrothermal Certificates for a Bipolar HVDC Interrupter

Original byline: Not clearly identified · Archive author: Han Jae Jun

Manuscript year: 2026. Not a claim of peer-reviewed publication.

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We investigate a reduced ±200-V bipolar HVDC fault-containment circuit integrating Gaussian actuation, a three-phase harmonic sensor, toroidal magnetic guards and a crossed differential detector. Classical passive-network energy identities yield conditions under which nonlinear guarded currents remain bounded despite specified component tolerances and bounded current-source injection. The cumulative analysis includes fault and cable EMT surrogates, device rating screens, source-isolation counterexamples, electrothermal convolution bounds, regularized magnetic-field quadrature and reproducible regression tests. A sharp convexity argument reduces the worst-case fixed-capacitance energy estimate from 2.715117 to 2.702711 J for the stated synthetic 95-A barrier of 2.726 J. We extend the multiport current first-exit theorem to reciprocally coupled nonlinear magnetic circuits: unobserved auxiliary currents reduce the effective guard barrier by 12i2mTL−1a m. The resulting quantitative model certificate requires this Schur penalty to be below 5.16105346 µH, equivalent to |M| < 57.409843 µH for one explicitly illustrative auxiliary inductance. The proof reveals a coupling margin that cannot be inferred from a guarded coil’s self-inductance alone. Theorems and diagnostic simulations are distinguished throughout from physical certification. Manufacturer-specific dynamic safe-operating areas, insulated three-dimensional windings, whole-grid EMT, interruption hardware and HIL remain unverified; no fabricated or qualified HVDC breaker is claimed. Keywords: HVDC circuit breaking; fault-current bounding; magnetic mutual inductance; switched energy dissipation; sharp thermal convolution; model verification; dielectric coordination.

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Original ZIPHVDC_GTSM_SINGLE_ARTICLE_R28_FINAL_20261013.zip
Main PDFpdf/main/hvdc-gtsm-single-article-r28-final-20261013.pdf
PDF pages192
PDF SHA-2564fb5ce7af29b1d660ce52108f37683151aba234306f7c35b74574817409ae796
ZIP SHA-256b1303ac142dcf5121607aec51d3d3eb2c0c9eb84e409d04ca64b3864f7cc9ffc

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@unpublished{Han2026hvdcgtsmsinglearticler28final20261013,
  author = {Han Jae Jun},
  title = {Fault Containment and Electrothermal Certificates for a Bipolar HVDC Interrupter},
  year = {2026},
  note = {Research source ZIP: HVDC_GTSM_SINGLE_ARTICLE_R28_FINAL_20261013.zip; independent theorem proof audit not certified},
  url = {https://han-jae-jun-research.vercel.app/research/hvdc-gtsm-single-article-r28-final-20261013.html}
}

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Original source version: HVDC_GTSM_SINGLE_ARTICLE_R28_FINAL_20261013.zip

Main PDF SHA-256: 4fb5ce7af29b1d660ce52108f37683151aba234306f7c35b74574817409ae796

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