$npx -y skills add Power-Agent/PowerSkills --skill interconnection-impact-mitigationSenior power-engineer playbook for screening and mitigating the grid impact of a new generator, storage, or large-load interconnection. Use whenever the question is whether X MW can connect at a point of interconnection and what upgrades it needs. Triggers on "interconnection stu
| 1 | # Interconnection impact mitigation |
| 2 | |
| 3 | Start with a defined injection: MW and MVAr capability, the point of interconnection (POI), and the dispatch scenarios to study. |
| 4 | |
| 5 | ## Preferred action order |
| 6 | 1. Pin down the study scenario set: peak and off-peak cases, high-renewable dispatch, and the prior-queued projects that must be modeled as in-service. |
| 7 | 2. Run steady-state screens with the addition: base case and N-1 power flow, thermal loading and voltage screens around the POI. Route violations to `thermal-overload-mitigation` and `voltage-violation-mitigation` for the corrective toolkit. |
| 8 | 3. Check weak-grid risk for inverter-based resources: short-circuit ratio at the POI. Low SCR (roughly below 3, critical below 2) flags control-interaction and stability risk — consider grid-forming controls, synchronous condensers, or POI relocation. |
| 9 | 4. Verify reactive capability and voltage control: power-factor range and voltage ride-through at the POI against the applicable interconnection requirements. |
| 10 | 5. Identify the binding constraint and assemble the mitigation set: network upgrades, an output-limitation or curtailment agreement, reactive devices, or phased interconnection — sized to the smallest set that clears the binding screen. |
| 11 | |
| 12 | ## Working rules |
| 13 | - Screen with linear tools (PTDF on the injection) before full N-1 reruns; confirm the short list in AC. |
| 14 | - The fault contribution of the new plant changes breaker duty nearby; screen it and route over-duty to `short-circuit-mitigation`. |
| 15 | - Restudy after any material change in plant size, POI, or queue assumptions — interconnection results do not transfer between scenarios. |
| 16 | - Separate "needed to connect safely" from "needed to deliver full output" — reliability upgrades and deliverability upgrades have different urgency and cost allocation. |
| 17 | |
| 18 | ## Deliver |
| 19 | - The injection studied (MW, POI, scenarios) and the screens it passed. |
| 20 | - The binding constraint with numbers (element, loading or voltage, contingency). |
| 21 | - The recommended mitigation set and what must be restudied if assumptions move. |