Purpose

The AESO is seeking stakeholder input and feedback to inform the AESO’s determination of the scope of the engagement on interconnected electric system protection requirements. 

Instructions 

1. To submit your responses, you will need to be registered and signed in on the AESO Engage platform. 
2. Please click on the "Submit Stakeholder Feedback" box below to begin the survey and provide your specific comments. 
3. Please submit one completed survey per organization. 
4. All responses will be shared on AESO Engage. 
5. Responses are due on or before September 4, 2026.

Questions

1. Do you agree that the AESO should initiate procedures for amending Section 503.15 as a result of the opportunities identified in the Findings and Recommendations paper or for another reason?
2. Provide rationale for your response.

Issue #1 Coordination Criteria (Pages 6-8)

3. Do you agree with the AESO’s Findings and Recommendations for Coordination Criteria?
4. Provide rationale for your response.

Issue #2 Diversified Vendors (Pages 8-9)

5. Do you agree with the AESO’s Findings and Recommendations for Diversified Vendors?
6. Provide rationale for your response.

Issue #3 Relay Operate Times (Pages 10-11)

7. Do you agree with the AESO’s Findings and Recommendations on Relay Operate Times?
8. Provide rationale for your response.

Issue #4 Instrument Transformers (Pages 11-12)

9. Do you agree with the AESO’s Findings and Recommendations for Instrument Transformers?
10. Provide rationale for your response.

Issue #5 Event Capture (Page 13)

11. Do you agree with the AESO’s Findings and Recommendations for Event Capture?
12. Provide rationale for your response.

Issue #6 Ground Fault Resistance Coverage (Pages 13-15)

13. Do you agree with the AESO’s Findings and Recommendations for Ground Fault Resistance Coverage?
14. Provide rationale for your response.

Issue #7 Line Auto-Reclosing Prohibition (Pages 15-17)

15. Do you agree with the AESO’s Findings and Recommendations for the Line Auto-Reclosing Prohibition?
16. Provide rationale for your response.

Issue #8 Mitigation of Impact from Transformer Energization (Pages 17-18)

17. Do you agree with the AESO’s Findings and Recommendations for Mitigation of Impact from Transformer Energization?
18. Provide rationale for your response.

Issue #9 Protection Systems Communications (Pages 19-21)

19. Do you agree with the AESO’s Findings and Recommendations for Protection Systems Communications?
20. Provide rationale for your response.

Issue #10 Synchronism Check Relaying (Pages 21-23)

21. Do you agree with the AESO’s Findings and Recommendations for Synchronism Check Relaying?
22. Provide rationale for your response.

23. Do you have any comments on anything related to Section 503.15 that was not included in the report?