SCED Penalty Factor

Resmi Surendran

Current Values

• Maximum Shadow Price for Transmission Constraints– Base Case:  $5,000/MW

– Generic constraints :  $5,000/MW

– Post Contingency • 345 kV:  $4,500/MW

• 138 kV:  $3,500/MW

• 69 kV:  $2,800/MW

Power Balance Penalty Curve

Over Generation Penalty ($/MWh) -3,001 -5,000

MW Cap Segment (MW) 10,000 100,000

Under Generation Penalty ($/MWh) 3,001 5,000

MW Floor Segment (MW) 10,000 100,000

equivalent to having extra capacity for meeting power balance violation at • (+/-) 3001 $/MWh for violated MW from 0MW to 9999.999MW, and • (+/-) 5000$/MWh for violated MW from 10000MW to 99999.999MW

Constraints

31-Mar - 30-April

• 3 violated constraints - 44 intervals

• 12 binding constraints - 272 intervals

  AH HULCCR

N LZLZ_D

CPCCR

N PUN RN SHMin SPP -12.02 -55.61 -727.3 -33.7 -33.7 -730.3 -439.3 -730.7 -12.02Max SPP 2250 2250 2250 2250 2250 2250 2250 2250 2250

Violated Constraint 1

DAUSLOS5 - 176T165@FAYETT : FAYETT 138 to WINCHE 138

Max SPP

Min SPP

Avg SPP

Avg of 10-90%

SPP 90% 10%Max SF

Min SF

Max LMP

Min LMP

416.2 -730.7 35.89 41.9 41.9 41.9 0.268 -0.126 482 -895.7

  AH HU LCCRN LZ LZ_DC PCCRN PUN RN SH

Max SPP 17.52 41.9 41.93 41.9 42.45 41.9 41.9 416.2 20.61Min SPP 17.52 -55.61 -727.3 41.87 41.9 -730.3 41.9 -730.7 20.61Avg SPP 17.52 17.52 29.49 41.9 42.01 27.51 41.9 41.42 20.61

Violated Constraint 2

DAUSSND5 - 203T260@BUTLER : BUTLER138 to ELGSW138

Max SPP

Min SPP

Avg SPP

Avg of 10-

90% SPP 90% 10%

Max SF

Min SF

Max LMP

Min LMP

613.7 -270.8 174.7 189.8 287.8 23.93 0.16 -0.396 1675 -269.4

  AH HU LCCRN LZ LZ_DC PCCRN PUN RN SH

Max SPP 189.3 289.2 287.8 287.8 287.8 287.8 613.7 613.7 213.7Min SPP 189.3 22.67 -9.51 286.1 287.8 -9.51 31.68 -270.8 213.7Avg SPP 189.3 189.3 163.5 287.5 287.8 156 130.2 192.7 213.7

West to North

• Max SF = 0.78759 => Lambda – 3937.95• Min SF = -0.17723 => Lambda + 886.15

SCED_TIMESTAMP LIMIT

SHADOW_PRI

CEMIN_EB_LMP

AVG_EB_LMP

MIN_SP_LMP

AVG_SP_LMP

SYSTEM_LAMBDA

TOTAL_GEN

4/24/2010 0:20 1450 111.5 -110.50 30.53 -110.50 28.12 31.88 27969

4/24/2010 0:25 1450 102.7 -101.87 27.95 -101.87 25.73 29.2 27732

4/24/2010 0:15 1450 104.2 -100.59 31.18 -100.59 28.93 32.44 28186

4/24/2010 0:30 1450 100.9 -98.63 28.91 -98.63 26.73 30.14 27622

4/22/2010 22:00 1450 79.99 -79.83 25.91 -79.83 24.76 26.7 31859

West to North

STL_POINT_TYPE MAX(SPP) MIN(SPP) AVG(SPP)

AH 22.07 22.07 22.07

HU 40.33 -27.39 22.07

LCCRN 43.55 -42.39 31.16

LZ 31.27 31.02 31.22

LZ_DC 31.24 31.24 31.24

PCCRN 43.39 -42.38 33.80

PUN 38.85 31.24 37.72

RN 50.32 -99.41 22.16

For settlement interval 4/24/2010 0:15 to 4/24/2010 0:30