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AI agent for electrical engineers

Protection Coordination Review Agent

Produce a checked set of protection settings that coordinate after a system change

CreatingDecisionsIT and development
See how it worksGet access
Protection Coordination Review Agent: what goes in, what the agent does and what you get

What it does

After a new transformer, a changed utility fault level or a new feeder, the old breaker and relay settings may no longer coordinate. This agent reads the one-line diagram and the current settings for the changed circuits. It runs a coordination study with the updated short-circuit values and plots the time-current curves. It flags places where an upstream device could trip before the downstream one, or where a device cannot clear a fault in time. It then tests adjusted settings and reruns the curves until each pair coordinates and the equipment damage limits are respected. The engineer approves the final settings. Edge case: moving one setting fixes a pair but breaks another downstream, so the agent tests the whole chain.

How it works

Follow the arrows from top to bottom. The orange dashed arrow is the loop: when a check fails, the agent goes back and tries again.

Start and resultWhat it doesA check on its own workWaits for your OKGoes back and retries
Yes, continueYes, continueApprovedNoNo 1 STARTS WHEN System change or fault level update 2 USES A TOOL Read the one-line diagram and current settings foraffected circuits 3 USES A TOOL Run short-circuit values for the changed system 4 USES A TOOL Plot time-current curves for each protection chain 5 CHECKS THE RESULT Does each pair keep the required time margin andclear within damage limits? If not: list the miscoordinated pairs. Back to step 3. 6 DOES Propose the smallest setting changes to restoremargins 7 USES A TOOL Rerun curves with the new settings for the wholechain 8 CHECKS THE RESULT Do all pairs in the chain pass, including downstreamones? If not: revise the proposal or use a different devicesetting. Back to step 6. 9 YOU APPROVE Engineer approves the settings 10 RESULT Coordination report with curves and setting sheet
Read the steps as a list
  1. System change or fault level update
  2. Read the one-line diagram and current settings for affected circuits
  3. Run short-circuit values for the changed system
  4. Plot time-current curves for each protection chain
  5. Does each pair keep the required time margin and clear within damage limits?If not: list the miscoordinated pairs. Back to step 3.
  6. Propose the smallest setting changes to restore margins
  7. Rerun curves with the new settings for the whole chain
  8. Do all pairs in the chain pass, including downstream ones?If not: revise the proposal or use a different device setting. Back to step 6.
  9. Engineer approves the settingsThe agent waits here for your OK.
  10. Coordination report with curves and setting sheet

How it decides

It requires a time margin between each upstream and downstream device at the fault level, and adjusts the smallest number of settings that restores it.

  • Require at least 0.3 second margin between upstream and downstream trip times
  • Check against transformer and cable damage curves
  • Change the fewest settings that fix the chain
  • Rerun the whole chain after any change

Make it yours

Every agent is a starting point. You choose these settings for your own situation.

  • Required time margin (default 0.3 s)
  • Study software and export format
  • Circuits in scope
  • Damage curves to include
  • Report layout

What keeps you in control

It always asks you first

  • Engineer approves settings before they go to the field
  • Utility or owner approves changes at the connection point

Hard limits

  • Never write settings to live relays
  • Never apply a setting that exceeds equipment damage limits

It stops when

  • Done: all chains coordinate and settings are approved
  • Stop: no setting works and equipment must change

Set it up

We guide you through the set-up, step by step

Members get the full set-up guide for this agent. No technical skills needed: you copy, paste and upload.

10 minto set it up in your AI
5 AIsChatGPT, Claude, Copilot, Gemini, Grok
  • One set of instructions to paste into your AI, with the clicks for ChatGPT, Claude, Microsoft 365 Copilot, Gemini and Grok
  • The agent then walks you through connecting your own data, one source at a time
  • A downloadable copy with the flow chart, the rules and the full guide
Get access to this agent

An example run

What happensA new 1,500 kVA transformer raised the fault level at a 480 V bus from 22 kA to 31 kA. The study showed the main breaker tripping 0.12 seconds before a feeder breaker, short of the 0.3 second margin. Lowering the feeder instantaneous pickup fixed that pair but a downstream motor starter lost margin, so the check failed. A time-delay change fixed both. The engineer approved the new settings.

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