# Voltage Violation Mitigation

> Senior power-engineer playbook for voltage violations. Use whenever a base-case or contingency study shows low voltage, high voltage, weak reactive support, or tap exhaustion — including escalations from a tool skill where bus voltage falls below 0.95 pu or rises above 1.05 pu in PowerWorld, PSS/E, PSLF, OpenDSS, pandapower, PyPSA, or surge. Triggers on "voltage too low", "voltage too high", "add reactive support", or "buses out of limits". Moves past reporting into an ordered, validated mitigation sequence.

- Skill: `power-agent/voltage-violation-mitigation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add power-agent/voltage-violation-mitigation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/power-agent/voltage-violation-mitigation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: power-agent (https://skillmd.com/u/power-agent)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/power-agent/voltage-violation-mitigation

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# Voltage violation mitigation

Start only after the violated buses, limits, and study condition are known.

## Preferred action order
1. Confirm the violation is real: solved case, correct limits, realistic generator Q limits, working AVR or Volt-VAR controls, correct remote-regulation targets.
2. Use existing reactive support first: generator voltage setpoints, free LTCs, switch shunts or capacitors, enable SVC or STATCOM or inverter Volt-VAR response.
3. Reduce reactive transport: redispatch MW closer to load, reduce stressed imports, or reconfigure topology.
4. If the problem remains, reduce transfer or load and identify reinforcement needs.

## High-voltage cases
- Lower voltage targets carefully.
- Switch out capacitors or switch in reactors.
- Absorb vars with generators or inverters where capability exists.
- Re-check light-load and outage conditions separately.

## Software cues
- PowerWorld, PSLF, and PSSE: adjust shunts, taps, and generator controls, then re-solve.
- OpenDSS: regulators, capacitor banks, and inverter controls come before feeder rebuilds.
- pandapower: shunts, tap settings, and generator Q support are the first levers.
- PyPSA or Egret: use them to screen dispatch or transfer fixes, then validate voltage with an AC tool.

## Deliver
- The violated buses and condition.
- The mitigation sequence tried or recommended.
- The first action that clears the issue without creating a worse one.