Oil load serving study update
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Oil Load Serving Study Update. August 18 th , 2011. OIL LOAD SERVING STUDY AREA. WILLISTON LOAD POCKET. ASSUMPTIONS. MCDC LIMITED TO 100MW E-W MDU PEAKERS OFF LEWIS & CLARK GEN ON WIND OFF CULBERSTON OFF BUT AVAILABLE FOR PRIOR OUTAGES FORT PECK GENERATION = 35MW, MAX ~135MW

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Oil Load Serving Study Update

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Oil Load Serving Study Update

August 18th, 2011


OIL LOAD SERVING STUDY AREA


WILLISTON LOAD POCKET


ASSUMPTIONS

MCDC LIMITED TO 100MW E-W

MDU PEAKERS OFF

LEWIS & CLARK GEN ON

WIND OFF

CULBERSTON OFF

BUT AVAILABLE FOR PRIOR OUTAGES

FORT PECK GENERATION = 35MW, MAX ~135MW

WINTER PEAK LOADS


CHALLENGES

VOLTAGE STABILITY

LOW VOLTAGE, POWER QUALITY, POOR “PROFILE”

REGIONAL LOAD INCREASES

115KV LINE OVERLOADS

MAINLY FEEDING WILLISTON POCKET


EXAMPLE VOLTAGE STABILITY “PV” CURVE


EXISTING SYSTEM

Charlie Creek-Williston at 115kV

Charlie Creek

345kV Line

230kV Line

115kV Line


BASELINE FORECAST

Existing System Limit Until July 2012


July 2012

Charlie Creek-Williston at 230kV


CAPCITOR ADDITIONS


Williston-CCR 230

& Cap Additions

BASELINE FORECAST


2013

Networked 115kV

Des Lacs


Networked 115kV


Williston SVC

BASELINE FORECAST


RUN CULBERTSON PRE-CONTINGENT

BASELINE FORECAST


ADD 345KV

BASELINE FORECAST


Prior Outages?


BASELINE FORECAST

Williston-CCR 230

& Cap Additions

Networked 115kV


BASELINE FORECAST

Networked 115kV

Williston-CCR 230

& Cap Additions


BASELINE FORECAST

Networked 115kV

Williston-CCR 230

& Cap Additions


QUESTIONS?


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