Workshop on ACC RMR study submitted with 2004 ten year plan

TEP RMR Workshop Presentation 1

Workshop on ACC RMR study submitted with 2004 ten year plan

Tucson Electric Power

January 15, 2004

Ed Beck Supervisor Transmission Planning

TEP RMR Workshop Presentation 2

TEP RMR Study

• TEP operates its system to WECC / NERC Level C (N-2) criteria

• Studies for RMR analysis were done to WECC / NERC Level B (N-1) based on Biennial assessment

• Cases used in study developed jointly with APS, SRP, WAPA, SWTC

TEP RMR Workshop Presentation 3

TEP System

• TEP system historically has been voltage stability constrained– Local Var responsive units can be committed in

TEP load area to supply var support and lower imports as necessary

– Automated remedial action scheme that responds to selected single and double contingencies within maximum 0.7 seconds

• In future years we have identified thermal and internal voltage SIL constraints

TEP RMR Workshop Presentation 4

UES System

• This report does not address issues with the UES Santa Cruz County area

• TEP is extensively studying issues in Santa Cruz county as part of a separate study for the Commission

TEP RMR Workshop Presentation 5

Greenlee

Westwing

North Loop

South

TEP Service Area

Vail

500 kV

345 kVIrvington

Voltage

2005 New Facilities2005 New Facilities

Nogales

Tortolita

Saguaro

Winchester (04)

Copper Verde (04)

Gateway Sub (05) Internal 138 kV upgrades

TEP RMR Workshop Presentation 6

Greenlee

Westwing

North Loop

South

TEP Service Area

Vail

500 kV

345 kVIrvington

Voltage

2008 New Facilities2008 New Facilities

Nogales

Tortolita

Saguaro

Pinal West

Internal 138 kV upgrades

TEP RMR Workshop Presentation 7

Greenlee

Westwing

North Loop

South

TEP Service Area

Vail

500 kV

345 kVIrvington

Voltage

2012 New Facilities2012 New Facilities

Nogales

Tortolita

Saguaro

Pinal West to Tortolita

Nogales

Tortolita to South

TEP RMR Workshop Presentation 8

Simultaneous Import Limit

Year SIL

MW

MW

Losses

Total

MW

Critical

Outage

Nature of Constraint

2005 1520 89 1609 Cholla – Sag. 500 kV line

WECC volt. Stability criteria

2008 1470 74 1544 South T2 345/138kV xfmr

Irv/VL 138 kV line limit

2012 1770 116 1886 SPR-VL 345kV line Internal volt. Criteria

TEP RMR Workshop Presentation 9

Peak Load

Year PEAKMW

MWLosses

TotalMW

RMRMW

Critical Outage Nature of Constraint

2005 2000 110 2110 178 South T2 345 / 138 kV Xfmr

Irvington / Vail 138kV line loading limit

2008 2121 99 2220 286 South T2 345 / 138 kV Xfmr

Irvington / Vail 138kV line loading limit

2012 2287 147 2434 119 Tortolita 500/138 Xfmr (#1 or #2)

Remaining Tortolita 500/138 kV Xfmr loading limit

TEP RMR Workshop Presentation 10

MLSC

Year PEAKMW

MWLosses

TotalMW

MWGen.

Critical Outage Nature of Constraint

2005 2420 131 2551 552 South T2 345 / 138 kV Xfmr

Irvington / Vail 138kV line loading limit

2008 2445 110 2555 629 South T2 345 / 138 kV Xfmr

Irvington / Vail 138kV line loading limit

2012 2720 152 2872 659 Tortolita 500/138 Xfmr (#1 or #2)

Remaining Tortolita 500/138 kV Xfmr loading limit

TEP RMR Workshop Presentation 11

Summary – Cost RMRInc. RMR gen. costs

2005 2008 2012

SIL 1600 1550 1850

MLSC 2500 2525 2800

Peak Load 2000 2121 2286

RMR 348 826 385

Annual Cost $68,061 $307,179 $301,885

TEP RMR Workshop Presentation 12

Environmental

RMR Output

SO2 NOx PM CO

2005 30 7,679 230 901

2008 188 48,221 1,508 5,807

2012 21 5,415 162 636

TEP RMR Workshop Presentation 13

Questions?