feat(substations): power_plant_interconnections join table + sync (PR 7/9)#200
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…c (PR 6/9) Implements transmission_line_endpoints join table to replace fuzzy sub1/sub2 string references with formal foreign keys. Includes fuzzy matching sync script with confidence scoring for community review workflow. **What's included:** - Schema: transmission_line_endpoints table with role (from|to) and match_confidence - Migration: 0005_transmission_line_endpoints.sql with indexes - Sync script: fuzzy-matches transmission_lines.sub1/sub2 against substation names - Levenshtein + suffix-variation matching for reliability - Match confidence (0..1) for high/medium/low confidence filtering **Features:** - Auto-matches high-confidence pairs (≥0.85) - Flags lower-confidence for community review - Handles common suffix variations (SUBSTATION/STATION/SUB) - Batch insert with upsert support **Next:** - PR #7: power_plant_interconnections join + sync - PR #8: Join query API endpoints - PR #9: Docs + catalog --- *Part of CommonGrid 9th entry point milestone (substations) — PR 6 of 9*
…nc (PR 7/9) Implements power_plant_interconnections join table to link power plants to their nearest substation(s) for grid interconnection analysis. Uses PostGIS ST_Distance to compute spatial relationships. **What's included:** - Schema: power_plant_interconnections table with distance_meters and isPrimary - Migration: 0006_power_plant_interconnections.sql with optimized indexes - Sync script: ST_Distance-based spatial matching via PostGIS - Configurable search radius (default: 50 km via SEARCH_RADIUS_KM env var) - Primary + secondary interconnection candidates **Features:** - Efficiently computes nearest substation per power plant - Marks closest match as isPrimary=true - Stores all candidates within search radius - Distance in meters for precise filtering - Batch insert with upsert support **Next:** - PR #8: Join query API endpoints - PR #9: Docs + catalog --- *Part of CommonGrid 9th entry point milestone (substations) — PR 7 of 9*
* feat(substations): add join query API endpoints (PR 8/9) Adds API endpoints to query the join tables: - GET /api/v1/substations/[slug]/transmission-lines - GET /api/v1/power-plants/[slug]/substations **What's included:** - Substation → transmission lines endpoint (lists connected lines + confidence) - Power plant → interconnected substations endpoint (primary + secondaries) - Distance metrics in km for power plant interconnections - Confidence distribution statistics for transmission line matches - Cache headers (3600s public) **Features:** - Groups transmission lines by role (from/to) - Separates primary interconnection from secondaries - Includes match confidence for community review - Efficient queries with proper joins **Next:** - PR #9: Docs + catalog update --- *Part of CommonGrid 9th entry point milestone (substations) — PR 8 of 9* * fix(cron): cap sync-substations maxDuration at 800s (Vercel Pro limit) Vercel Pro plan enforces a max of 800 seconds for serverless function maxDuration. The previous 1800s value caused the build to succeed but deployment to fail at the patchBuild step with: Builder returned invalid maxDuration value for Serverless Function "api/cron/sync-substations". Serverless Functions must have a maxDuration between 1 and 800 for plan pro. Capping at 800 unblocks deploys. Full US substation syncs that exceed this should be moved to a long-running runner (GitHub Actions, Render, etc.) rather than a Vercel serverless function. --------- Co-authored-by: texture-coding-agent <coding-agent@texturehq.com>
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Part of the substations 9th entry point epic.
Adds
power_plant_interconnectionsjoin table linking power plants to their substation(s), plus a sync script that picks the closest/most-likely substation for each plant (with distance + is_primary flag).Stack: PR 7/9 (base: previous [PR 6 transmission joins])
Completes the substation ↔ grid asset graph: plants → substations → transmission lines.