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Add the rough power balance module for early design phases

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In LPH 2/3 there are no circuits yet, but the office needs a power
balance by DIN 276 cost group, as in the Excel template "Leistungsbilanz -
KG400": each trade enters consumers by piece or by area (W/m²) with GLF
and cos phi; the balance sums AV and SV per cost group, adds a reserve and
derives the maximum current.

The module is separate from the circuit structure: own tables
(migration 0010), own folder src/estimate-balance and an import-free
shared calculation used by API and UI. Writes go through project commands
(estimate-balance.insert/.update/.delete with complete documents), so
revision checks and Undo/Redo apply; it is not part of project snapshots
or transfer yet. A comparison endpoint sums the device rows of all circuit
lists by cost group (longest prefix) against the estimate.

The UI adds a sidebar entry, a list of Stände (template KG 400, empty or
copy) and a spreadsheet-like editor with autosave, AMEV picker for the
GLF, totals, reserve, maximum current, comparison table and print layout.
The tests reproduce the template example exactly (143.24 kW, 148.48 kVA,
157.56 kW / 163.33 kVA with 10 % reserve, 235.75 A). See
docs/estimate-balance.md and issue #7.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Grovy311 2026-09-26 14:50:48 +02:00
parent 80dbc73230
commit 37a70b6b36
37 changed files with 8537 additions and 4 deletions
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31
src/frontend/types.ts
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@ -535,3 +535,34 @@ export interface CreateCircuitDeviceRowInputDto {
}
import type { ProjectDeviceSyncField } from "../shared/constants/project-device-sync-fields";
// ── Grobe Leistungsbilanz (LPH 2/3) ─────────────────────────────────────
// The document shapes are shared with the API; see
// src/shared/estimate-balance/estimate-balance.ts.
import type {
EstimateBalanceSnapshot,
EstimateComparison,
} from "../shared/estimate-balance/estimate-balance";
export type EstimateBalanceDto = EstimateBalanceSnapshot;
export type EstimateComparisonDto = EstimateComparison;
export type EstimateBalanceTemplate = "kg400" | "empty" | "copy";
export interface CreateEstimateBalanceInput {
name: string;
workStage?: string | null;
dateIso?: string | null;
template: EstimateBalanceTemplate;
/** Required for template "copy". */
copyFromBalanceId?: string;
}
export interface EstimateBalanceCommandResultDto extends ProjectCommandResultDto {
balance: EstimateBalanceDto;
}
/** PUT result: either a new revision or an unchanged document. */
export type EstimateBalanceUpdateResultDto =
| EstimateBalanceCommandResultDto
| { unchanged: true; balance: EstimateBalanceDto };