Cutbank 810S and Thornton 2091S substations. To mitigate these violations, it would require a remedial action scheme (RAS) to trip the new Thornton 2091S substation. Following the 7L228 contingency, the load served by the Thornton 2091S substation would be left unserved. Following the loss of 7L40 (Little Smoky 813S to Simonette 733S) a minor post-transient deviation of 10.5% the Simonette 733S POD bus was noted; this is marginally higher than the 10% guideline. The TFO and DFO have confirmed that such marginal voltage deviation does not impose any operational restriction.] Mitigation Strategy and Sensitivity Analysis [as required] Please describe how to mitigate the identified Reliability Criterial violations in these and post-Project studies. Alternative Selected This section will provide which Alternative is preferred based on performed studies. Please provide how the study results impacted on the Alternative selections. Below is an example of the write up: Alternative [State selected Alternative #, e.g., 2] was selected as the preferred alternative since….. [Provide solid reasons why this Alternative was selected] Recommendation This section will provide the recommendation of this project including selected Alternative, new equipment and mitigation measure (if required). is an example of the write up: [The recommended alternative to connect the Facilities is Alternative 2, building the new 144/6.9 kV POD substation Vincent 2019S. The Project will include: Tapping the 144 kV line 7L65 and building 0.15 km of 144 kV line to connect the new Vincent 2019S POD substation. Installing one 20/26.6/33.3 MVA, 144 kV to 6.9 kV LTC transformer, one 144 kV transformer breaker, and associated equipment. The 25 MVAr 144 kV capacitor at Creek 706S, as identified in the 2015 Long-term Transmission Plan (LTP), is required prior to the Project ISD, since the inclusion of this capacitor bank mitigates all criteria violations noted in the pre- and post-connection results.]
Cutbank 810S and Thornton 2091S substations. To mitigate these violations, it would require a remedial action scheme (RAS) to trip the new Thornton 2091S substation. Following the 7L228 contingency, the load served by the Thornton 2091S substation would be left unserved. Following the loss of 7L40 (Little Smoky 813S to Simonette 733S) a minor post-transient deviation of 10.5% the Simonette 733S POD bus was noted; this is marginally higher than the 10% guideline. The TFO and DFO have confirmed that such marginal voltage deviation does not impose any operational restriction.] Mitigation Strategy and Sensitivity Analysis [as required] Please describe how to mitigate the identified Reliability Criterial violations in these and post-Project studies. Alternative Selected This section will provide which Alternative is preferred based on performed studies. Please provide how the study results impacted on the Alternative selections. Below is an example of the write up: Alternative [State selected Alternative #, e.g., 2] was selected as the preferred alternative since….. [Provide solid reasons why this Alternative was selected] Recommendation This section will provide the recommendation of this project including selected Alternative, new equipment and mitigation measure (if required). is an example of the write up: [The recommended alternative to connect the Facilities is Alternative 2, building the new 144/6.9 kV POD substation Vincent 2019S. The Project will include: Tapping the 144 kV line 7L65 and building 0.15 km of 144 kV line to connect the new Vincent 2019S POD substation. Installing one 20/26.6/33.3 MVA, 144 kV to 6.9 kV LTC transformer, one 144 kV transformer breaker, and associated equipment. The 25 MVAr 144 kV capacitor at Creek 706S, as identified in the 2015 Long-term Transmission Plan (LTP), is required prior to the Project ISD, since the inclusion of this capacitor bank mitigates all criteria violations noted in the pre- and post-connection results.]
Connection-Proposal-Template.docx