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TEP

TEP. 2008 BTA N-1-1 Studies RMR Studies Extreme Contingency Studies. N-1-1 Studies. TEP studies simultaneous outage of all combinations of two transmission elements, whether common mode or unrelated

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TEP

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  1. TEP 2008 BTA N-1-1 Studies RMR Studies Extreme Contingency Studies

  2. N-1-1 Studies • TEP studies simultaneous outage of all combinations of two transmission elements, whether common mode or unrelated • Simultaneous outage of two elements is equivalent to having one of them IOS and then losing the other • TEP survived all combinations of two transmission elements • 15 TEP-owned singles plus Cholla-Saguaro are included in the TOLS tables

  3. RMR Studies

  4. Extreme Contingency Studies Extreme contingency considered to be loss of all EHV transformers at a TEP substation (Tortolita, Vail or South): • TEP can survive loss of all EHV xfmrs at any substation: Tortolita, South, & Vail. • These outages are included in Tie Open Load System tables. TEP operates using “load Shed” tables • Fast switched reactive devices and/or direct load trip arming

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