15-126R1 G82P Baltarugby 907L(F3M Runcaps Roscaps) Forbes30k 06 22 to 07 09

TEMPORARY OPERATING INSTRUCTION No. 15-126R1

15-05655 (G82P) 1-08330422 15-04938 (Balt-Rgby) 1-07682236 15-05426 (907) 1-07644826 File 15-05428 (F3M) n/a 15-05799 (Run Caps) n/a N 15-05798 (Ros Caps) n/a o O.O. 15-06491 (Fbs 30K) MISO No. 1-08494185 . 240803 230 kV Line G82P (Glenboro – Peace Garden) and, 230 kV Line Balta – Rugby and, 230 kV 907 Line (Shannon-Running) and, Name of 115 kV Line F3M (Fort Francis – Running) and, Outage: 230 kV Running Shunt Caps and, 230 kV Roseau Shunt Caps and, 500 kV Forbes MSC 30K 2015-06-22 from 0800 to 2015-07-09 at 1800 CDT Effective Dates: (2015-06-22 from 0800 to 2015-07-09 at 1800 EST) Standing Guide Reference: MHEX – USA Special Study as per K. Long 2015-06-22

Description G82P (MHEB) – System Posturing for Rugby Terminal work. of Work: Balta-Rugby (GRE/OTP) - Moving line to allow for 230-115 kV transformer at Rugby. 907 Line (MP) – Civil Work for new GRE Ortman tap F3M (MP) – Posture Option 2 907 Line Outage Running Shunt Caps (MP) – Posture Option 2 907 Line Outage Roseau Shunt Caps (MP) – Posture Option 2 907 Line Outage Forbes 30K Shunt Cap(XCEL) – Forced-out

TRANSFER LIMITS: MH-USA South (MH Export) Schedule SOL: 1700 Limit 1475

Transfer Non- Schedule Location TTC RM (SOL) CRSG OM Firm Firm Limit USA 1900 200 1700 150 75 1475 0 1475

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Schedule IROL 450 SOL: 370 Limit 320

Transfer Non- Schedule Location TTC RM (SOL) CRSG OM Firm Firm Limit USA 600 230 370 0 370 0 320 320

TLR South South North North Triggers TLR 1 TLR 3 TLR 1 TLR 3 1535 1550 344 352

MISO Webtool MISO InPostings addition to the TLAPWebtool table, the following Real Time (pre-contingent) transfer limits must also be maintained. Postings TTC TRM Coeff D603M (RemainingMHEX_S 500 kV Bank): (Export) 1900 425 1.000 TRANSFER MHEX_N LIMITS: TTC Transfer (Import) (SOL)600 600 0.467 1188 1188 D603M _S

TLR D603M_S D603M_S Triggers TLR 1 TLR 3 1105 1129

A) During this prior outage condition generation curtailment of the St. Joseph and St. Special Notes Leon wind farms concurrent with TLR on MHEX_N may be required when to MISO West Manitoba to USA flows are north to prevent post contingent overloads on G37C RC following a trip of B10T or M602F.

B) The SOL for MHEX_S and MHEX_ N is the same if the MISO RTCA and MISO Flowgate Monitoring Tool is unavailable prior to or during this outage.

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Special A) TOI Extentions - This TOI may be extended until 23:59 by performing the following Instructions to steps: MHEB 1. Verify system conditions to confirm there are no additional tie line facilities Operator: outages, or new internal MH outages. 2. Review RTCA to confirm there are no new contingencies. 3. Contact MISO to confirm there are no new outages, if there are no new outages provide notice to MISO that MH is extending the TOI. 4. Extend the outage in COLA. 5. Update TLAP outage table. 6. Provide notice to affected balancing authorities

B) When called upon by MISO for the supply of CRSG:

If Real Time Contingency Analysis (RTCA) indicates a post contingent overload condition on Y51L for the contingent loss of D14S - redispatch MH generation to maintain CRSG delivery as per:

 Start Brandon Gas Generation and run up to 60 MW. Brandon generation must be re-dispatched from HVDC generation at Dorsey

 After 60 MW re-dispatch is complete, should RTCA continues to indicate a post contingent overload condition on Y51L due to the contingent loss of D14S, Continue to re-dispatch generation from Brandon gas in 10 MW increments until post contingent overload on Y51L has been mitigated.

 The mitigation must be completed within 30 minutes.

C) For MHEX_N:  The MHEX_N will at all times remain below 285 MW as measured at Dorsey, Letellier, and Glenboro Stations.  Manitoba Hydro will self-supply part of the CRSG as follows: Self-Supply > (CRSG - NonFirm) - MHEX_S MW + MHEX_N MW. > (320– 320) - MHEX_S MW + MHEX_N MW. > 0 + MHEX_N MW

Special D) AGC Control – Treat as system intact. Instructions to - MISO RC will monitor R50M and adjust AGC as necessary. MHEB Operator - Identify MHEX SOL with remaining MHEX Tie lines in-service excluding R50M. (cont):

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Prepared By: J. Cameron Date: 2015 06 22

Revised By: J. Cameron Date: 2015 06 25

Copies to: SOSS, System Control Centre MISO NSSS, System Control Centre GSO, System Control Centre GSSS, System Control Centre

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