pc16 nw pump storage study results pc16 - pump storage... · 2017-01-17 · pc16 scope •study...
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![Page 1: PC16 NW Pump Storage Study Results PC16 - Pump Storage... · 2017-01-17 · PC16 Scope •Study Requestor: National Grid •PC23b study changes from 2026 CC –Renewable generation](https://reader034.vdocument.in/reader034/viewer/2022050109/5f4763607100af1608730782/html5/thumbnails/1.jpg)
PC16 NW Pump Storage Study Results
Stan Holland
December 20, 2016
W E S T E R N E L E C T R I C I T Y C O O R D I N A T I N G C O U N C I L
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PC16 NW Pump Storage Modeling2
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Scope
• Scope• Key Questions
Assumptions
Add 1200 MW of Pump Storage in
NW
Results• Generation Dispatch• CO2 Emissions• Production Cost• Dump Energy• Path Flows
Production Cost Model
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NW Pump Storage
Purpose
To study the effect of adding 1200 MW of pump storage in the northwest in a high renewable environment.
The case used a modified version of the original PC23 case (High RE in the NW and No. Calif.), under normal hydro conditions. Comparisons are made to that case.
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PC16 Scope
• Study Requestor: National Grid
• PC23b study changes from 2026 CC
– Renewable generation added in NW and No. Calif.
• PC16 study changes from PC23b
– 1200 MW (4 x 300 MW) pump storage added in northwest at the WAUTOMA 500 kV bus
• Key Questions
– How does the system respond to added pump storage?• Generation dispatch
• Transmission utilization
• Loads served & production cost
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Dispatch of Added Pump Storage5
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Pumping Dispatch of Added PS6
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Comparison of Generation Results
![Page 8: PC16 NW Pump Storage Study Results PC16 - Pump Storage... · 2017-01-17 · PC16 Scope •Study Requestor: National Grid •PC23b study changes from 2026 CC –Renewable generation](https://reader034.vdocument.in/reader034/viewer/2022050109/5f4763607100af1608730782/html5/thumbnails/8.jpg)
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WECC Annual Generation by Category (MWh)
Category2026 PC23b High
NW RE
2026 PC16 NW
Pump StorageDifference
Conventional Hydro 240,637,586 240,624,392 (13,194)
Energy Storage 2,807,851 3,274,730 466,879
Steam - Coal 169,234,094 169,516,213 282,120
Steam - Other 1,759,024 1,754,307 (4,717)
Nuclear 37,688,019 38,340,524 652,505
Combined Cycle 244,398,634 243,556,321 (842,312)
Combustion Turbine 36,271,570 36,161,126 (110,445)
IC 679,439 674,753 (4,686)
Other 0 0 0
DG/DR/EE - Incremental 30,439,080 30,439,228 147
Biomass RPS 21,049,343 21,042,650 (6,693)
Geothermal 32,359,521 32,360,647 1,126
Small Hydro RPS 3,743,933 3,744,013 80
Solar 57,514,554 57,578,959 64,405
Wind 123,417,654 123,520,577 102,923
== Total == 1,002,000,301 1,002,588,440 588,139
Other Results
Var. Prod. Cost (M$) 15,593 15,573 (20)
CO2 Cost (M$) 2,163 2,169 5
CO2 Amount (MMetrTn) 286 286 (0)
Dump Energy (MWh) 10,978,423 11,038,617 60,194
Pumping (PL+PS) (MWh) 11,664,226 12,238,728 574,501
Exports (MWh) 0 0 0
Added PC16 units
Columbia GS
Cost and CO2 impacts are difficult to interpret with dispatch changes
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Why did Nuclear generation increase?9
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There were 4 more forced outages in the PC23b case than in the PC16 case. This is set by the GridView monte carlo results.
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Change in Generation by state10
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Path Utilization11
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Summary Observations
• The added pump storage units were dispatched more from February through June.
• There was very little impact to the flows on theWECC paths.
• The other impacts on costs and CO2 are unclear due to the other unrelated dispatch changes.
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Contact Info
Stan [email protected](801) 883-6858
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