Recently, I challenged a proprietary AI platform to solve a simple protection problem:
Use a CO-9 overcurrent relay to provide backup protection for a 150 MVA transformer; the high-side voltage is 230 kV. Plot the characteristic of the CO-9 versus the transformer damage curve.
This was not an especially difficult problem to solve. I wanted to see if it would fail to accurately answer the question or if it would crash. I also input the same challenge to a free AI program.
The proprietary AI platform was much more effective than the free AI platform, which only provided the equation but would not plot it. This solution made the same decisions I would have made and provided a usable solution that matched my manual solution.
The following blocks represent the technical response from the proprietary platform.
CONCLUSION
The proprietary AI platform followed a standard approach for selecting the CT ratio and pertinent CO-9 settings. It was also able to plot the overcurrent characteristic versus the transformer damage curve.
Steve Turner is a Consultant at Sargent & Lundy. He was previously in charge of system protection for the Fossil Generation Department at Arizona Public Service Company for five years. Turner formerly held positions at Beckwith Electric Company, GEC Alstom, SEL, and Duke Energy, where he developed the first patent for double-ended fault location on overhead high-voltage transmission lines and was in charge of maintenance standards in the transmission department for protective relaying. He has BSEE and MSEE degrees from Virginia Tech University. Turner is an IEEE Senior Member and a member of the IEEE PSRC and has presented at numerous conferences.