P2 Full Publisher Scenario Engine

ARSVIN P2 keeps the product scope as an IEC 61850 Sampled Values publisher. It does not turn ARSVIN into an analyzer, relay model, or certified transient test set.

This stage expands the State Sequencer from balanced 3-phase presets into a richer publisher scenario engine for lab-oriented SV output.

What P2 full adds

• Per-phase magnitude control for Ia/Ib/Ic/In and Va/Vb/Vc/Vn.
• Per-phase angle offsets for A/B/C/N.
• Single-phase A-G fault preset.
• Phase-to-phase B-C fault preset.
• Negative-sequence / unbalance preset.
• Zero-sequence / residual-current preset.
• Per-phase VT fuse-fail preset.
• CT saturation stress preset with publisher-side DC offset, harmonic, and clipping approximations.
• Harmonic injection preset.
• DC offset transient preset.
• Backward-compatible .svpub.json state snapshots.
• Dedicated Waveform... panel for manual output shaping and selected sequencer-state shaping, keeping the main window clean.

Important boundary

The P2 scenario engine generates publisher-side waveform approximations. It is useful for lab readability checks, relay engineering workflows, subscriber behavior experiments, and PCAP evidence generation.

It is not a calibrated CT/VT transient model, real-time digital simulator, or conformance-certified relay test set.

Per-phase sequencer fields

Each sequencer state still has legacy balanced fields:

• CurrentScale
• VoltageScale
• AngleShiftDegrees
• FrequencyHz

P2 adds per-phase multipliers:

• CurrentScaleA, CurrentScaleB, CurrentScaleC, CurrentScaleN
• VoltageScaleA, VoltageScaleB, VoltageScaleC, VoltageScaleN
• AngleOffsetA, AngleOffsetB, AngleOffsetC, AngleOffsetN

The actual per-channel RMS value is:

current channel magnitude = CurrentScale × CurrentScaleX
voltage channel magnitude = 57.735 V × VoltageScale × VoltageScaleX

The actual per-channel angle is:

AngleShiftDegrees + phase angle + AngleOffsetX

where the default phase angles are A = 0°, B = -120°, C = +120°.

Dedicated Waveform panel

Advanced shaping is intentionally not placed directly on the main window. The main window keeps quick manual values, phasor view, State Sequencer, PCAP, report, and publish controls clean.

Use the ribbon Waveform... button to open the dedicated panel:

• Manual output shape edits per-channel steady-state shaping for Manual mode.
• Selected sequencer state edits per-phase multipliers, angle offsets, DC offset, harmonic, clipping, and scenario tag for the currently selected State Sequencer row.
• Reset buttons restore clean Manual shape or clean selected-state shape.

Waveform shaping fields

P2 also adds lightweight publisher-side shaping:

• CurrentDcOffsetPercent
• VoltageDcOffsetPercent
• CurrentHarmonicPercent
• VoltageHarmonicPercent
• HarmonicOrder
• CurrentClipPercent
• VoltageClipPercent

These fields are applied during instantaneous sample generation before the SV payload is encoded.

Presets

3P fault

Balanced three-phase fault: high current, low voltage, recovery.

A-G fault

Phase-A current rises, phase-A voltage collapses, B/C remain near nominal.

B-C fault

Phase-B and phase-C currents rise; B/C voltages depress; angle offsets emulate directional stress.

Negative sequence

Per-phase magnitude and angle imbalance to exercise subscriber negative-sequence behavior.

Zero sequence

Residual/neutral scenario. Neutral publishing requires In/Vn to exist in the dataset and be enabled.

CT saturation

Publisher-side approximation using high current, DC offset, 2nd harmonic, and clipping.

VT fuse A

Per-phase voltage collapse on phase A only.

Harmonic injection

Adds harmonic content while preserving the fundamental phasor.

DC offset transient

Stepwise decaying DC offset approximation.

Evidence workflow

The P2 full scenarios work with:

• dry-run publish,
• live publish,
• generated PCAP export,
• publisher evidence report,
• TX Timing Health.

Use generated PCAP export to inspect the resulting waveform in Wireshark or offline scripts.