Transcript ERCOT Pilot Project for Fast Responding Regulation Service (FRRS)

ERCOT Pilot Project for Fast
Responding Regulation Service (FRRS)
August 8, 2012 PDCWG
August 9, 2012 ETWG/QMWG
Agenda
1. Previously, we presented (previous presentation available as an appendix at the
end)
•
Purpose of Pilot Program
•
Purpose of FRRS
•
FRRS Qualification and Performance Criteria (for pilot project)
2. What is FRRS?
3. Use of FRRS for frequency regulation
4. Use of FRRS to help arrest sudden frequency decay caused by large unit trips
5. FRRS qualification and performance criteria
6. Examples of deployments concept and variables subject to change
7. How will FRRS be procured (priced and paid for) in the Pilot?
8. Implementation Schedule for the Pilot
9. Questions
2
ERCOT Public
What is Fast Responding Regulation Service (FRRS)?
1. FRRS is intended to complement current regulation
service
2. FRRS can be ramped to its full output within 60 cycles
3. FRRS is intended to respond first and help slow down the
frequency decay while other resources starts to respond
4. FRRS is intended to respond to large frequency drops to
promptly help arrest the frequency decay
5. California ISO, New York ISO, PJM, ISO New England
and MISO will have or already has Fast Responding
regulation.
3
ERCOT Public
Example: FRRS Deployment Logic and Expected Impact
Deploy
current
Reg-Down
Recall
Reg-Down
and
Deploy
Reg-Up
Deploy
FRRS-Up
4
ERCOT Public
Simulation: Effect of FRRS on sudden large Frequency decay
FRRS-Up Full
Deployment with 1
second delay after
59.91 Hz
5
ERCOT Public
FRRS-pilot Qualification Criteria
1. Resources providing FRRS must be able to follow FRRS
signal
2. Resources requesting FRRS-up qualification
a) Must be able to respond to large frequency decay triggered by
loss of generation.
b) Resources providing FRRS must provide full MW response
within 60 cycles after frequency hits 59.91 Hz trigger.
c) This capability must be demonstrated by the Resource Entity
using high speed Frequency and MW data with resolution no
less than 32 samples per second.
d) For the purpose of demonstration, the Resource Entity may use
off-set of -0.2 Hz to demonstrate the MW response.
6
ERCOT Public
Pilot FRRS Qualification Criteria (continued)
3. Resources requesting FRRS-down qualification
a) Must be able to respond to high frequency.
b) Resources providing FRRS must provide full MW response within 60
cycles after frequency hits 60.09 Hz trigger.
c) This capability must be demonstrated by the Resource Entity using high
speed Frequency and MW data with resolution no less than 32 samples
per second.
d) For the purpose of demonstration, the Resource Entity may use off-set
of +0.2 Hz to demonstrate the MW response.
4. Resources providing FRRS (Up and Down) must be able to
continuously remain deployed for up to 8 minutes with 95% or more
of the requested MW for successful qualification.
5. Resources that successfully demonstrate the requirement above will
be qualified as FRRS capable Resources for the capacity that was
requested for qualification.
7
ERCOT Public
FRRS Performance Criteria
Resources providing Fast Responding Regulation Service shall meet the following
performance criteria
1. MW response provided by Resources carrying FRRS in response to ERCOT FRRS
signal shall be at least 95% and less than 110 % of the ERCOT deployment instruction
for that Resource.
2. Resources must meet the requirement stated in (1) for 95% of all deployments within a
month.
3. When FRRS-up is not fully deployed, for sudden frequency decay where frequency
declines lower than 59.91 Hz, Resources providing FRRS-up shall within 60 cycles
appropriately respond to the declining frequency.
4. When FRRS-down is not fully deployed, for sudden frequency deviation that may
cause frequency to exceed 60.09 Hz, Resources providing FRRS-down shall within 60
cycles appropriately respond to frequency.
5. FRRS Resource must provide high speed data with resolution no less than 32
samples per second to demonstrate their performance for (3) and (4) above. ERCOT
will also review randomly selected deployments during deviations of lower magnitude to
verify compliance.
6. Failure to meet the requirement in paragraph (2) will lead to reduction in capacity
payment
8
ERCOT Public
FRRS Deployment logic and Parameters
1. During the FRRS pilot, some of the FRRS deployment
parameters listed below are subject to change within the
defined range
2. Initial trigger limit may be lowered up to 59.98 Hz
3. Initial FRRS MW deployment may be changed
4. Duration of FRRS deployment may be lowered from
current 2 minutes duration for any single band deployment
5. FRRS deployments may be done proportionally over
increments of 0.01 Hz or 0.005 Hz between 59.98 Hz and
59.95 Hz.
9
ERCOT Public
Scenario 1: Frequency below 59.97 Hz
Frequency (Hz)
60
59.99
59.97
BAND 1
59.95
BAND 2
59.93
59.91
Up
X%
FRRS Deployment
BAND 3
Idle
Y minutes
Down
0+
<= 2
Time (minutes)
Date
10
Meeting Title (optional)
Scenario 2: Frequency below 59.95 Hz
Date
11
Meeting Title (optional)
Scenario 3: Frequency below 59.91 Hz (on slow decline)
Frequency (Hz)
59.97
FRRS Deployment
60
59.99
Up
59.95
59.91
Idle
Down
0+
Date
<=2
Time (minutes)
12
<=4
<=6
Meeting Title (optional)
Scenario 4: Frequency below 59.91 Hz (Unit trip)
Frequency (Hz)
60
59.99
59.97
59.95
59.93
Up
X%
FRRS Deployment
59.91
Idle
<=2 min
Down
0+
Time (minutes)
Date
13
Meeting Title (optional)
FRRS-Up Recall (Always based on duration or frequency)
Date
14
Meeting Title (optional)
How is FRRS Procured during the Pilot?
1. FRRS-up and FRRS-down amounts are specified in advance for each hour. For the
pilot, ERCOT will procure up to 65 MW per hour for FRRS-up and will procure up to 35
MW per hour for FRRS-down. No changes are made to the existing REGUP and
REGDN requirements.
2. ERCOT has a list of “Qualified” FRRS Pilot Resources. Each Wednesday QSEs inform
ERCOT of the amounts available for Saturday through Friday.
3. ERCOT prorates amounts to Pilot Resources as necessary. Final quantities sent to
QSEs (for the upcoming week).
4. COPs for Pilot Resources shall reflect the final schedule as REGUP and REGDN.
15
ERCOT Public
How is FRRS is Priced and Paid for during the Pilot?
1. ERCOT Settlements performs settlement by creating appropriate
SASM data cuts. Current REGUP and REGDN bill determinants are
used. A SASM is NOT executed by the operators.
2. DAM clearing prices shall be used to price the FRRS awards.
3. The cost for pilot MWs procured are paid for similar to other AS.
4. Adjustments can be made depending on actual availability and
performance.
16
ERCOT Public
Pilot Schedule
1. Present updated power point presentation at WMS, ROS, PDC and ETWG in
August. (Review ERCOT’s response to submitted questions and comments.)
[WMS 14th, ROS 15th]
2. ERCOT to post draft Governing Document - mid August.
3. Comments on Draft Governing Document due a week from posting
4. Post updated Governing Document 8-30-12 (7 days before TAC meeting)
5. ERCOT presents Pilot Project to TAC at 9/6/12 TAC meeting.
6. Request approval for Pilot at the 9/18/12 BOD meeting.
7. Qualify Pilot Resources 9/18/12 through 4/30/13 (end of pilot). [6 month Pilot]
8. Begin procurements with Operating Day 11-1-12.
Continue for 6 months
unless stopped early by ERCOT. Extensions of pilot may be considered
during first 6 months.
17
ERCOT Public
Other Info
1. Regular updates to be provided to TAC/ETWG/PDCWG during Pilot Project.
2. It is expected that ERCOT will need to engage a contractor equivalent to .5 to
1 FTE for the duration of the Pilot Project.
3. The average cost for REGUP over the last 6 months has been about $9/MW
and for REGDN has been about $6/MW. The estimated cost for 6 months of
FRRS procurement from pilot resources is estimated to be about $3.4 Million.
18
ERCOT Public
Questions?
Please send suggestions and comments to
[email protected]
19
ERCOT Public
Appendix
June 2012 Presentation at WMS/ROS/ETWG/PDCWG
20
ERCOT Public
ERCOT Pilot Project for Fast
Responding Regulation Service (FRRS)
June 13, 2012 WMS and
June 14, 2012 ROS
Agenda
1. Declining Grid Inertia of ERCOT Interconnection
2. ERCOT Frequency Profile Jan 2011 through Feb-2012
•
ERCOT Frequency Profile – 4 second data
•
ERCOT CPS1 Score
3. Qualifications and Performance Criteria
4. Purpose of FRRS Pilot Program
•
What is FRRS?
•
Why do we need it?
5. Fast Regulation Deployment Logic
•
Fast regulation to complement the traditional regulation
6. Expected benefits of Fast Responding Regulation
7. How will FRRS be procured (priced and paid for) in the Pilot?
8. Implementation Schedule for the Pilot
9. Questions
22
ERCOT Public
Declining Inertial Frequency Response in ERCOT
http://www.ercot.com/content/gridinfo/etts/keydocs/System_Inertial_Frequency_Response_Estimation
_and_Impact_of_.pdf
23
ERCOT Public
ERCOT Frequency Profile Jan 2011 through Feb-2012
24
ERCOT Public
170
170
160
160
150
150
140
140
130
130
120
120
110
110
100
100
CPS1 Average
ERCOT CPS1
2
r- 1
Ma -12
n
Ja v- 11
Nop- 11
Se -11
l
Ju y-11
Mar- 11
Ma -11
n
Ja v- 10
Nop- 10
Se -10
l
Ju y-10
Mar- 10
Ma -10
n
Ja v- 09
Nop- 09
Se -09
l
Ju y-09
Mar- 09
Ma -09
n
Ja v- 08
Nop- 08
Se -08
l
Ju y-08
Mar- 08
Ma -08
n
Ja v- 07
Nop- 07
Se -07
l
Ju y-07
Mar- 07
Ma -07
n
Ja v- 06
Nop- 06
Se -06
l
Ju y-06
Mar- 06
Ma -06
n
Ja v- 05
Nop- 05
Se -05
l
Ju y-05
Mar- 05
Ma -05
n
Ja v- 04
Nop- 04
Se -04
l
Ju y-04
Mar- 04
Ma -04
n
Ja v- 03
Nop- 03
Se -03
l
Ju y-03
Ma
12 Month Rolling Average
Monthly Average
ERCOT Public
25
Pilot FRRS Qualification Criteria
1. Resources providing FRRS must be able to follow FRRS
signal
2. Resources requesting FRRS-up qualification
a) Must be able to respond to large frequency decay triggered by
loss of generation.
b) Resources providing FRRS must provide full MW response
within 60 cycles after frequency hits 59.91 Hz trigger.
c) This capability must be demonstrated by the Resource Entity
using high speed Frequency and MW data with resolution no
less than 32 samples per second.
d) For the purpose of demonstration, the Resource Entity may use
off-set of -0.2 Hz to demonstrate the MW response.
26
ERCOT Public
Pilot FRRS Qualification Criteria (continued)
3. Resources requesting FRRS-down qualification
a) Must be able to respond to high frequency.
b) Resources providing FRRS must provide full MW response within 60
cycles after frequency hits 60.09 Hz trigger.
c) This capability must be demonstrated by the Resource Entity using high
speed Frequency and MW data with resolution no less than 32 samples
per second.
d) For the purpose of demonstration, the Resource Entity may use off-set
of +0.2 Hz to demonstrate the MW response.
4. Resources providing FRRS (Up and Down) must be able to
continuously remain deployed for up to 8 minutes with 95% or more
of the requested MW for successful qualification.
5. Resources that successfully demonstrate the requirement above will
be qualified as FRRS capable Resources for the capacity that was
requested for qualification.
27
ERCOT Public
FRRS Performance Criteria
Resources providing Fast Responding Regulation Service shall meet the
following performance criteria
1. MW response provided by Resources carrying FRRS in response to ERCOT
FRRS signal shall be at least 95% and less than 110 % of the ERCOT
deployment instruction for that Resource.
2. Resources must meet the requirement stated in (1) for 95% of all
deployments within a month.
3. When FRRS-up is not fully deployed, for sudden frequency decay where
frequency declines lower than 59.91 Hz, Resources providing FRRS-up shall
immediately and appropriately respond to the declining frequency.
4. When FRRS-down is not fully deployed, for sudden frequency deviation that
may cause frequency to exceed 60.09 Hz, Resources providing FRRS-down
shall immediately and appropriately respond to frequency.
5. Failure to meet the requirement (2) will lead to reduction in capacity payment.
28
ERCOT Public
Purpose of the FRRS pilot program
1. Gather and analyze data to assist in determining the potential
improvements in ERCOTs ability to arrest frequency decay during unit
trips due to the presence of FRRS
2. Gather and analyze data to assist in determining the potential reductions
of current regulation that would be appropriate due to the presence of
FRRS
3. Assess the operational benefit and challenges of procuring and deploying
FRRS
4. Gather and analyze data to assist ERCOT in developing settlement
methodologies for FRRS and current regulation that use a pay for
performance approach similar to what is specified in FERC Order 755;
29
ERCOT Public
FRRS-Up and FRRS-Down Deployment Logic
•
•
•
•
•
•
Deadband for FRRS trigger (±0.03 Hz)
Deployment period
Deployment period when frequency degrades further
Recalling
Maximum continuous deployment duration
Apply similar logic for Down-Regulation for high
frequency
• ERCOT may make additional parameter changes during
pilot as needed
• FRRS deployment signal logic will be shared with the
pilot Resources
30
ERCOT Public
31
ERCOT Public
Frequency Decay Slope
32
ERCOT Public
Potential benefits of FRRS
1. Promptly arrest frequency decay during unit trips
2. Diminishing use of traditional regulation
3. Reduction in Regulation capacity procurement
4. Better frequency control at a lower overall cost
33
ERCOT Public
How is FRRS Procured during the Pilot?
1. FRRS-up and FRRS-down amounts are specified in advance for each hour. For the
pilot, ERCOT will procure up to 65 MW per hour for FRRS-up and will procure up to 35
MW per hour for FRRS-down. No changes are made to the existing REGUP and
REGDN requirements.
2. ERCOT has a list of “Qualified” FRRS Pilot Resources. Each Wednesday QSEs inform
ERCOT of the amounts available for Saturday through Friday.
3. ERCOT prorates amounts to Pilot Resources as necessary. Final quantities sent to
QSEs (for the upcoming week).
4. COPs for Pilot Resources shall reflect the final schedule as REGUP and REGDN.
34
ERCOT Public
How is FRRS is Priced and Paid for during the Pilot?
1. ERCOT Settlements performs settlement by creating appropriate
SASM data cuts. Current REGUP and REGDN bill determinants are
used. A SASM is NOT executed by the operators.
2. DAM clearing prices shall be used to price the FRRS awards.
3. The cost for pilot MWs procured are paid for similar to other AS.
4. Adjustments can be made depending on actual availability and
performance.
35
ERCOT Public
Pilot Schedule
1. Power point presentations at WMS, ROS and ETWG in June and July.
2. Suggestions and comments due to ERCOT 6-27-12
3. ERCOT plans to present updates at July WMS and ROS meetings (7/11 and
7/12).
4. Draft Governing Document to be posted by 7-26-12. (7 days before TAC)
5. ERCOT plans to present at 8/2/12 TAC meeting.
6. Request approval for Pilot at the 9/18/12 BOD meeting.
7. Qualify Pilot Resources 9/18/12 through 4/30/13 (end of pilot). [6 month Pilot]
8. Begin procurements with Operating Day 11-1-12.
Continue for 6 months
unless stopped early by ERCOT. Extensions of pilot may be considered
during first 6 months.
36
ERCOT Public
Other Info
1. Regular updates to be provided to TAC during Pilot Project.
2. It is expected that ERCOT will need to engage a contractor equivalent to .5 to
1 FTE for the duration of the Pilot Project.
3. The average cost for REGUP over the last 6 months has been about $9/MW
and for REGDN has been about $6/MW. The estimated cost for 6 months of
FRRS procurement from pilot resources is estimated to be about $3.4 Million.
37
ERCOT Public
Questions?
Please send suggestions and comments to WMS
or ROS exploder or [email protected]
[email protected]
before COB 6-27-12
38
ERCOT Public