OLTC Selector / 有载开关选型

填工况，给出 2025 目录里最低满足的型号。网页和 oltc CLI 共用同一份 selectOltc 引擎。

CLI： npx -y oltc-selector@1.3.0，命令是 oltc。Agent 技能包另放，不在这个仓库里。
网页： oltc-selector.vercel.app · GitHub Pages

私人辅助，不是厂家官网。型号是起点，出 OS 前要工程确认。

CLI

不需要 clone 本仓库。

npm i -g oltc-selector

oltc --iu 350 --um 40.5 --conn D --reg W --pm 8
# CV2III-350D/40.5-10193W

oltc --octc --iu 800 --um 72.5 --conn D --series II --contact 6x5
oltc --iu 600 --um 72.5 --conn Y --reg W --pm 8 --structure combined
oltc --mva 25 --kv 110 --conn Y --reg W --pm 8

Flag	Meaning	Default
--iu / --imax	Max through-current Imax (A). No safety factor.	required unless --mva
--mva --kv	Transformer MVA + tap-side kV → Imax (min tap + --k)
--k	Safety factor ≥ 1, capacity path only	1.0
--um	Equipment Um (kV)	derived from --kv on MVA path
--ust	Step voltage (V)	0, or derived on MVA path
--conn Y|D	Switch star / delta (not Dyn11)	Y
--reg W|G|0	Reversing / coarse-fine / linear	W
--pm	± steps	8
--octc	Off-circuit 无载 (WSL/WSG)	on-load
--structure	auto / combined 组合式 / compound 复合式 / cage 笼式 / drum 鼓式	auto
--series	OCTC wiring II IV V VI VII VIII	auto is linear IV for Y and D
--mount	in-tank / on-tank / dry	in-tank
--oil / --vacuum	Switching medium	vacuum (on-load)
--contact	OCTC contact e.g. 6x5
--json	Machine output

--structure auto and omitting --octc match the web first paint: on-load, in-tank vacuum, minimum-adequate ranking.

Selection rules

1. Minimum-adequate, not SHZV-by-default. Rank CV2 → CM2 → SHZV → SDZV → SHZVG. SDZV (dual-break, Ust 6000 V) only when SHZV step voltage or step capacity is short. Prefer one three-phase unit over 3× singles when a brochure III type exists.
2. OLTC existence comes from brochure / catalogue axes (lib/catalog.ts), not price-list Y/D twins. A 2025 list row that prices CM2III-…D the same as Y does not make CM2III-…D a type.
3. No CV2-500. CV2 III currents are 350 and 600 only.
4. No combined III-D. CM / CM2 / CMD / SHZV / SDZV / SHZVG three-phase strings are star-point Y. Cover delta with 3x…I- when that I type exists. Compound CV / CV2 / SV and on-tank HWV III-D do exist. No SDZV II, I-1200/1500, or III-1300.
5. Compound has no selector grade letter. No CV2III-350Y/40.5B-…. Combined in-tank may have B/C/D/DE after Um.
6. WSL / WDL existence is 2025-list row keys without prices (lib/listIndex.data.json). Missing rows (no WSLIV-2000D/126, no 7x6E @ 72.5) are not emitted.
7. WSG is catalogue axes only (no 2025 list sheet in the index).
8. Typing Imax (--iu) does not apply a safety factor. --k only applies on the transformer-capacity (--mva) path.

Web app

预选 66 / 110 / 220 kV 带常用工况。默认真变压器容量，星/角推出 Imax（最低分接和安全系数）。调压侧电压推出 Um。点「选型」之后才出型号。

npm install
npm run dev      # http://127.0.0.1:3000
npm test
npm run pack:cli

GitHub Pages：npm run build:gh（GH_PAGES=true）。Vercel 根路径，不要设 GH_PAGES。

语言：中文、English、Tiếng Việt、Español、Türkçe、Bahasa Indonesia。

OS regression

docs/replay/2025-os-sales.xlsx and 2026-os-sales.xlsx hold sold type plus duty (Imax, Um, Ust, ±, Y/D, phases, serial). Rebuild from JSON:

python scripts/os-to-excel.py

npm test runs shipped selectOltc on every complete row: no illegal type out; a legal sold type that covers the duty must appear in ranked results.

许可

条款 · 隐私。仅供参考。