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Reliability Redispatch Pilot Presentation for NIPPC June 13, 2007

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Dispatch and scheduling procedure changes documented ... Kimberly Clark. zKBC. 0.052 -0.022 -0.028. 0.044. HM Jackson. zHMJ -0.159 -0.786 -0.572 ... – PowerPoint PPT presentation

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Title: Reliability Redispatch Pilot Presentation for NIPPC June 13, 2007


1
Reliability Redispatch Pilot Presentation for
NIPPC June 13, 2007
  • Term of Pilot
  • 6/26/07 through 9/30/07

2
Project Status
  • Software Development complete
  • Hardware environments configured and operational
  • Dispatch and scheduling procedure changes
    documented
  • Dispatch, scheduling and bidder training underway
  • Pilot agreement nearing completion

3
Bid Tool Overview
  • Redispatch Bid Content
  • Generator
  • Day and Hour ending
  • Quantity (MW) available within 10 min.
  • Price per MWh
  • Increase (INC) and/or Decrease (DEC)

4
Bid Validation Rules
Bid Data
  • INC Only Bid
  • DEC Only Bid
  • INC and DEC Bid
  • Neither Zero Bid
  • INC Bid includes INC MW INC Price
  • DEC Bid includes DEC MW DEC Price

5
Bid Validation Rules
Megawatts
  • Whole gt Zero
  • Not exceeding Generators established Maximum
    INC/DEC MW amount.
  • Not less than Generators established Minimum
    INC/DEC MW amount.

6
Bid Validation Rules
Price
  • Positive U.S. currency value per MWh
  • Not exceeding established Maximum INC/DEC Bid
    Price Limit. (400)
  • Not less than established Minimum INC/DEC Bid
    Price Limit. (0)

7
Submitting a Bid
  • Submitted or changed up to
  • 20 minutes prior to flow hour.
  • No further into the future
  • than 5 days. (Day 5)

8
Bid Tool Demonstration
9
Calculate Redispatch
  • Background

10
Simplified RRP Map
11
Introduction
  • A generators impact on a flowgate is measured by
    its Power Transfer Distribution Factor or PTDF.
  • PTDF is also known as Path Utilization Factor
    (PUF) and Transmission Loading Relief (TLR).

12
Introduction cont.
  • The PTDF is the ratio impact to the loading on a
    specific flowgate based on an increase (INC) at
    the generator and a like decrease (DEC) at a
    reference bus (Grand Coulee for our studies).
  • A positive PTDF will increase the loading.
  • A negative PTDF will decrease the loading and
    provide relief.

13
Flowgates and PTDFs/PUFs
Reference Bus PUFs are zero
Flowgates
Generators Generators South of Allston North of Hanford North of John Day Paul-Allston
CAR Carmen -0.173 -0.563 -0.819 -0.204
CHJ Chief Joseph 0.010 -0.005 -0.007 0.012
CHP Chehalis 0.249 -0.250 -0.748 0.389
CNT Centralia 0.231 -0.232 -0.749 0.352
GCL Grand Coulee 0.000 0.000 0.000 0.000
HPP Hermiston -0.091 -0.547 -0.714 -0.125
JDA John Day -0.127 -0.611 -0.834 -0.156
LAN Lancaster -0.018 -0.186 -0.006 -0.024
TDA The Dalles -0.135 -0.580 -0.808 -0.169
zBON Bonneville -0.136 -0.454 -0.734 -0.254
zFRD Fredrickson 0.084 -0.074 -0.147 0.087
zGEC Goldendale -0.125 -0.572 -0.786 -0.159
zHMJ HM Jackson 0.044 -0.028 -0.022 0.052
zKBC Kimberly Clark 0.044 -0.028 -0.022 0.052
zKFG Klamath Falls Gen -0.147 -0.589 -0.828 -0.176
zLVF Longview Fiber 0.072 -0.059 -0.091 0.070
zMCN McNary -0.091 -0.547 -0.714 -0.125
14
Redispatch
  • To relieve the loading on the path, we find the
    pairs of generators that will provide relief.
  • We look for combinations of INC generator and DEC
    generators with a combined PTDF that is negative.
  • The combined PTDF is the INC PTDF DEC PTDF.
  • Numbers closer to -1.0 are more effective.

DEC CNT CHP CHJ GCL
INC P-A 0.352 0.389 0.012 0.000
CAR -0.204 -0.556 -0.593 -0.216 -0.204
GCL 0.000 -0.352 -0.389 -0.012 0.000
JDA -0.156 -0.508 -0.545 -0.168 -0.156
TDA -0.169 -0.521 -0.558 -0.181 -0.169

-
15
Single Redispatch Pair
JDA-CNT
Redispatch 35 MW
Impact 35-0.508 -17.8 MW
16
Redispatch Solution
  • To get more relief, redispatch more pairs of
    generators.
  • Since a single generator could be involved in
    multiple pairs, the amounts are summed and each
    generator is called once.

17
Calculate Redispatch
  • 35-MW Paul-Allston Example

18
35-MW Paul-Allston Example
19
35-MW Paul-Allston Example
20
35-MW Paul-Allston Example
21
35-MW Paul-Allston Example
22
35-MW Paul-Allston Example
23
35-MW Paul-Allston Example
24
35-MW Paul-Allston Example
25
35-MW Paul-Allston Example
26
35-MW Paul-Allston Example
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