Senior power-engineer playbook for power-flow convergence failures. Use whenever a base case or post-change case diverges, oscillates, or fails to solve in PSS/E, PSLF, PowerWorld, pandapower, PyPSA, surge, or OpenDSS. Triggers on "power flow diverged", "case won't solve", "did not converge", "blown-up voltages", or "max iterations reached". Every tool skill stops on a non-convergent base case — this playbook is what to do next, separating data errors from numerical fragility from genuine physical infeasibility.
Senior power-engineer playbook for distribution DER integration limits. Use whenever rooftop or utility-scale PV, storage, or other DERs push a feeder into voltage rise, reverse power flow, thermal limits, or protection desensitization — or when the question is how much more DER a feeder can host. Triggers on "hosting capacity", "PV on this feeder", "voltage rise from solar", "reverse power flow", or "DER interconnection on distribution". Pairs naturally with OpenDSS and pandapower feeder studies.
Senior power-engineer playbook for frequency-performance problems. Use whenever studies or operations show low system inertia, poor frequency nadir, high RoCoF, weak primary frequency response, UFLS encroachment, or reserve shortfall after loss of the largest unit or HVDC import. Triggers on "frequency nadir", "RoCoF too high", "inertia too low", "UFLS risk", "primary frequency response", or "loss of largest unit". Distinct from dynamic-stability-mitigation, which handles damping and angle stability rather than frequency containment.
Senior 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 study", "system impact study", "POI", "can we connect this plant at bus Y", "short-circuit ratio", or "weak grid". Walks from steady-state screens through weak-grid and reactive checks to the binding constraint and its mitigation set.
Senior power-engineer playbook for excessive fault current and breaker over-duty. Use whenever a short-circuit study shows fault duty above interrupting ratings, or a new interconnection raises fault levels near equipment limits. Triggers on "fault duty", "breaker over-duty", "short-circuit current too high", "interrupting rating exceeded", or "fault MVA at this bus". Gives an ordered sequence from study verification through operational fixes to equipment upgrades.
Progressive-disclosure workflow for ANDES dynamic studies. Use whenever the user wants to run ANDES through PowerMCP for power flow, small-signal / eigenvalue analysis, or time-domain simulation — even when they just say "check the damping", "is this stable", "run a fault", or "look at the oscillation modes". Exposes a solved base case before eigenvalue screening and time-domain runs. Reach for this instead of answering ANDES dynamics questions unaided.
Progressive-disclosure workflow for OpenDSS distribution-feeder studies. Use whenever the user wants to compile a DSS model, solve a distribution circuit, inspect feeder bus voltages or power, sweep load multipliers, or run daily / harmonic studies through PowerMCP — even when they just say "solve this feeder", "check the voltages", or "run a daily profile". Exposes a solved base feeder before advanced scenarios. Reach for this instead of answering OpenDSS feeder questions unaided.
Progressive-disclosure workflow for pandapower power-system studies. Use whenever the user wants to load, build, or inspect a pandapower network, run AC power flow, check bus voltages or line and transformer loading, or screen N-1 contingencies — even when they just say "run a load flow", "check this case", "is anything overloaded", or name a case file like case39.json. Exposes a clean base-case solve before advanced outage studies. Reach for this instead of answering pandapower grid questions unaided.