SAFETY-10: the whole decision path runs and nothing reaches the inverter
checks / unit (pull_request) Successful in 7m58s

Every optimiser defect this project has found was invisible from outside
while it was happening, and each was paid for at the meter first: SAFETY-45's
28 charge onsets an hour against a binding peak_cap_w, TARIFF-14's wrong
quarter-hour for 45 minutes in every 60, SAFETY-46's 598 Wh spent to gain
310 Wh. There was no way to watch what the optimiser WOULD do without letting
it do it.

`shadow_mode` runs strategies, arbiter, clamps and guards, records the
decision with its reason, and commands nothing.

⚠️ IT WRITES. It writes 0 W, on the ordinary heartbeat, through the ordinary
single writer. The inverter holds its last command forever - it has no meter
timeout - so "commands nothing" implemented as "stops writing" would leave
whatever was standing when shadow mode came on standing for as long as it was
left on, under a page saying nothing is being commanded. That is the failure
this repository keeps finding. Refreshing 0 W is also what
firmware/goodwe-master.yaml's 30 s stale-input watchdog requires of us; going
quiet would keep that board tripped for the whole run, which is an alarm being
used as a mode.

⚠️ IT IS NOT A SECOND WRITE PATH. No claim, no transport, no arithmetic of its
own. It is a substitution inside Controller._write_unit() - the single choke
point every write already reaches - in the same form as the three above it,
and it is the LAST of them, so SAFETY-28's gate and SAFETY-03's clamp still
grade the number the decision path produced.

⚠️ THE DEFAULT IS `auto`, NOT `true`, AND THAT IS THE CARD'S REAL CONTENT. The
Supervisor composes options as {**config.yaml defaults, **stored user
options}, so a new key with a new default reaches EVERY EXISTING INSTALL on
the next update - including the one regulating a real battery. A boolean
default-on would have stopped it silently. There is no mechanism by which one
key can default differently for a new install and an existing one, so
"default-on for new" is a value the add-on RESOLVES: `auto` is shadow while
control is STOPPED and live once it is STARTED. A fresh install ships
`auto_start: false` and comes up observing; an install that is controlling is
started and does not change by one watt.

THE FAILSAFES. Sign watchdogs (SAFETY-02/30): INERT - they grade
Inverter.standing_w(), which shadow mode holds at 0 W. Fed the shadow decision
they would disagree with a meter that never saw it and LATCH A TRIP THAT
SURVIVES INTO LIVE OPERATION AND A RESTART. Clamp (SAFETY-03), write gate
(SAFETY-28), meter freeze (SAFETY-18), peak guard: OBSERVE. Circulation
(SAFETY-31) and delivery (SAFETY-42): observe and may legitimately latch,
because their evidence is measured power. The operator stop is the one
deliberate change: enforced at the wire rather than as a P_SAFETY claim, which
would otherwise make every recorded decision read "stopped".

⚠️ RECORDED LIMITATION: _shadow_settle() re-seeds the carried command to what
stands on the wire, which makes the exit safe by construction - and therefore
the loop leg's shadow decision is ONE SLEW STEP, not a trajectory. A shadow
run answers "what would it command now", not "what would it have done next".
The strategies are unaffected; all three defects above are visible from one.

Graded on the writes and on the rendered surface, never on the flag: 22
mutations, no survivors, including one that lets a write escape and one that
goes silent instead of commanding 0 W. Closed loop on TEST-23 stage 3's rig,
same hour twice: live drives the pack to -2000 W and SoC 50.000 -> 62.331 %;
shadow commands 0 W throughout, SoC stays 50.0 exactly, and the arbitrage
decision is identical in action, instant, signed power, reason and arbiter
winner.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BwRLw7eKYj2byVdwB6kbjU
This commit is contained in:
Claude
2026-09-14 17:25:43 +02:00
parent 8f82dd4e06
commit 8fa4febfef
13 changed files with 1767 additions and 7 deletions
+3
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@@ -249,6 +249,9 @@ configuration:
delivery_hold_s:
name: "Safety · Not-delivering report after (s) — derived, do not change"
description: "TWO OR MORE INVERTERS ONLY; with one inverter this check cannot fire at all, and that is deliberate rather than a limitation. How long ONE inverter may stand at a discharge share it is not producing - short by more than the saturation threshold, with nothing this add-on can read to explain it - while at least one sibling is NOT in that state, before it is named. REPORTS ONLY (SAFETY-42): nothing is commanded differently, the loop is untouched, and the site goes on running short by that unit's share until you look. DERIVED FROM 2640 CLOSED-LOOP TEST RUNS in which nothing was faulty (SAFETY-42, plus a one-inverter arm as the control, which reports nothing at any threshold): the worst legitimate episode those runs produce is 35.0 s, and the ceiling is the 900 s quarter that bills the capacity tariff. 185 s is 5.29 times that. ⚠️ The schema lets you set this as low as 30 s, which is BELOW that measured 35.0 s - at 30 s you should expect reports on legitimate saturation. The second inverter in those tests is a COPY OF THE FIRST, because the second inverter does not exist yet: what a unit four times slower would produce (75.0 s) is a sensitivity study on that idea, not a measurement of any real second inverter. Do not change it without re-deriving it - and it can be re-derived now: admin/goodwe sim/delivery_window.py --campaign --blag (TEST-21). A pack at or below its own bms_soc_floor is never reported: an empty pack and a wedged one are identical watt for watt, and that setting is the only thing that tells them apart - so if this fires on a pack you believe is empty, that setting does not describe your battery."
shadow_mode:
name: "Safety · Shadow mode — run every decision, command nothing"
description: "Runs the whole decision path — strategies, arbiter, clamps and guards — and sends NOTHING to the inverter. Every inverter is held at 0 W, refreshed on the ordinary heartbeat, and the status page says plainly that the battery is not being controlled; the decision it WOULD have commanded, and why, is on the status page and in the action log. This is how you watch a site for a day before letting it trade. 'auto' (the shipped value) means shadow mode while control is stopped and ordinary control once you press Start — so a NEW install observes before it ever commands anything, and an install that is already controlling is not changed by one watt. 'on' means shadow mode always, whatever the Start / stop button says: that is the setting to pick when you want the loop and the strategies running on a live site with nothing reaching the battery. 'off' is ordinary control. ⚠️ While this is on the battery is NOT being regulated — the grid is not held at zero, no arbitrage trade is executed and no capacity peak is shaved. ⚠️ A failsafe latch that was already up stays up: shadow mode does not clear it, and the banner names it."
auto_start:
name: "Advanced · Start controlling automatically on boot"
description: "Off by default. Leave it off until the site has been commissioned: with it off, somebody has to press Start after every restart of the add-on, which is what you want while you are still checking signs and entities."
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@@ -229,6 +229,9 @@ configuration:
delivery_hold_s:
name: "Veiligheid · Melding niet-leverende omvormer na (s) — afgeleid, niet wijzigen"
description: "ALLEEN BIJ TWEE OF MEER OMVORMERS; bij één omvormer kan deze controle helemaal niet aanslaan, en dat is een bewuste keuze en geen tekortkoming. Hoe lang één omvormer mag blijven staan op een ontlaadaandeel dat hij niet levert - meer dan de verzadigingsdrempel te weinig, zonder dat deze add-on er een verklaring voor kan uitlezen - terwijl minstens één andere omvormer dat NIET doet, voordat hij bij naam wordt gemeld. ALLEEN MELDEN (SAFETY-42): er wordt niets anders gestuurd, de regeling blijft ongemoeid, en de installatie blijft draaien met het aandeel van die omvormer te weinig tot u gaat kijken. AFGELEID UIT 2640 GESLOTEN-LUSTESTS waarbij niets defect was (SAFETY-42, plus een arm met één omvormer als controlegroep, die bij geen enkele drempel iets meldt): de langste terechte episode in die tests duurt 35,0 s, en de bovengrens is het factuurkwartier van 900 s. 185 s is 5,29 keer zoveel. ⚠️ Het schema laat u zo laag als 30 s instellen, en dat is ONDER die gemeten 35,0 s - op 30 s moet u meldingen bij terechte verzadiging verwachten. De tweede omvormer in die tests is een KOPIE VAN DE EERSTE, want de tweede omvormer bestaat nog niet: wat een vier keer tragere eenheid zou opleveren (75,0 s) is een gevoeligheidsstudie op dat idee en geen meting aan een echte tweede omvormer. Verander dit niet zonder de afleiding opnieuw te maken - en dat kan nu: admin/goodwe sim/delivery_window.py --campaign --blag (TEST-21). Een accu op of onder zijn eigen bms_soc_floor wordt nooit gemeld: een lege accu en een vastgelopen omvormer zijn watt voor watt identiek, en die instelling is het enige wat ze uit elkaar houdt - slaat dit toch aan bij een accu die volgens u leeg is, dan beschrijft die instelling uw batterij niet."
shadow_mode:
name: "Veiligheid · Schaduwmodus — alles beslissen, niets sturen"
description: "Doorloopt het volledige beslispad — strategieën, arbiter, begrenzers en bewakingen — en stuurt NIETS naar de omvormer. Elke omvormer wordt op 0 W gehouden, ververst op de gewone hartslag, en de statuspagina zegt onomwonden dat de batterij niet wordt aangestuurd; wat er gestuurd ZOU zijn, en waarom, staat op de statuspagina en in het actielogboek. Zo bekijkt u een installatie een dag lang voordat u hem laat handelen. 'auto' (de meegeleverde waarde) betekent schaduwmodus zolang de regeling gestopt is en gewone regeling zodra u op Start drukt — een NIEUWE installatie kijkt dus eerst toe voordat ze ooit iets stuurt, en een installatie die al regelt verandert geen watt. 'on' betekent altijd schaduwmodus, wat de Start/stop-knop ook zegt: die stand kiest u als u de lus en de strategieën wilt laten draaien op een werkende installatie zonder dat er iets bij de batterij aankomt. 'off' is gewone regeling. ⚠️ Zolang dit aanstaat wordt de batterij NIET geregeld — het net wordt niet op nul gehouden, er wordt geen prijshandel uitgevoerd en er wordt geen capaciteitspiek afgevlakt. ⚠️ Een vergrendeling die al aanstond blijft aanstaan: schaduwmodus heft die niet op, en de banner noemt hem."
auto_start:
name: "Geavanceerd · Automatisch beginnen te regelen bij opstarten"
description: "Staat standaard uit. Laat het uit tot de installatie in dienst is genomen: zolang het uit staat, moet iemand na elke herstart van de add-on op Start drukken, en dat is precies wat u wilt terwijl u tekens en entiteiten nog aan het nakijken bent."