$npx -y skills add Power-Agent/PowerSkills --skill dynamic-stability-mitigationSenior power-engineer playbook for dynamic stability problems. Use whenever eigenvalue or time-domain studies show poor damping, transient angle instability, weak voltage recovery, or sustained oscillations in tools such as ANDES or PSS/E — including escalations from a tool skill
| 1 | # Dynamic stability mitigation |
| 2 | |
| 3 | Start only after the disturbance, monitored channels, and failing metric are explicit. |
| 4 | |
| 5 | ## Preferred action order |
| 6 | 1. Confirm the models and event setup are credible: machine data, control models, fault location, clearing time, and initial dispatch. |
| 7 | 2. Reduce the stressed transfer or dispatch pattern that drives the instability. |
| 8 | 3. Improve controls: AVR, PSS, governor, FACTS, or dynamic VAR support. |
| 9 | 4. Improve protection or switching performance if clearing time is the binding issue. |
| 10 | 5. Consider RAS, fast valving, braking resistors, or controlled load shedding only with explicit trigger logic. |
| 11 | |
| 12 | ## Working rules |
| 13 | - Use eigenvalues to screen and time-domain simulation to confirm. |
| 14 | - Separate angle instability, oscillatory instability, and voltage recovery problems; they do not share the same fix order. |
| 15 | - Re-check the steady-state dispatch after major control or topology changes. |
| 16 | |
| 17 | ## Deliver |
| 18 | - The failing mode or scenario. |
| 19 | - The mitigation sequence that should be tried. |
| 20 | - The first credible fix and the remaining validation needed. |