Demand Response Products. Discussion Points 1.Setting the scene….. 2.Virtual Power Station...
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Transcript of Demand Response Products. Discussion Points 1.Setting the scene….. 2.Virtual Power Station...
![Page 1: Demand Response Products. Discussion Points 1.Setting the scene….. 2.Virtual Power Station 3.Reserves deployment order 4.Demand Response Products.](https://reader035.fdocuments.in/reader035/viewer/2022062422/56649ebf5503460f94bca253/html5/thumbnails/1.jpg)
Demand Response Products
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Discussion Points
1. Setting the scene…..
2. Virtual Power Station
3. Reserves deployment order
4. Demand Response Products
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Setting the scene…..
•“SUPPLY” is what Eskom can deliver and “DEMAND” is what the consumer
needs
•ENERGY MARKET is the day-head scheduling of “Supply” options to MEET the expected “DEMAND”
=
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Setting the scene…..
•RESERVE MARKET is on the day “back-up” to ensure stability of the Eskom
system/grid
=
•SUPPLY side “RESERVES”
•DEMAND side “RESERVES” – Demand Response Program
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DEMAND RESPONSEPRODUCTS
Demand Response Programmes
Supplemental DR
Instantaneous DR
Self Generation DR
Normal DR
Emergency DR
Fixed Time DR
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Virtual Power Station (VPS)
KZNWC CENTRALECV P S
SYSTEM OPERATOR
SUPPLY DEMAND
CC CCC C CC CCC C
x x√√
09 0010 0014 0015 00
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7
Illustration of typical RESERVE deployment order
Em
erg
ency
RE
SE
RV
E M
AR
KE
TE
mer
ge
ncy
re
du
ctio
n
NR
S 0
48-9
Incr
easi
ng “
Tigh
tnes
s” o
f Sup
ply
Stage 4
Load shedding and curtailment ( Stages 1& 2 )
Curtailment ( Stage 0 )
Load shedding and curtailment ( Stage 3 )
Supplemental DR
Op
erat
ing
Automatic Gen Control (AGC)
Instantaneous DR Instantaneous
ENERGY MARKET
Interruptible LoadAgreements
Max cont. rating/Emergency Level 1
Self Generation DR (Hi Rate)
Self Generation DR (Low to Medium Rate)
Open Cycle Gas Turbines
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Normal DR
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Demand Response Products
Supplemental DR
Supplemental Reserves> 1 MW load ( Minimum 10% of average MW demand between 5h00-22h00 during weekdays)
Minimum 30 minute notification
Pre-recorded phone call
30 minute integration metering (MV 90 or pre-approved Meter on Line)
1 x 2 hour event per day
150 on target events per year
Reduction measured against average of previous 3 similar days (CBL)
Performance linked Capacity Payment for Standby R26.70/11.21 MW / hr
Performance linked Energy Payment for load reduction at R1250/ MWh
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10
DR - Bidding and Scheduling
• Customer bid load availability by 9h00 day N-1
• VPS consolidate and offer load to System Operator
• System Operator instruct VPS to schedule or not schedule loads
• VPS informs Customer by 15h00 of standby instruction
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Load Reduction and Rates
(LR)= sum [(CBL (n) – Actual Load (n)).CBL (m) – Actual Load (m))] n = first Integration Period of the Load Reduction request m = last Integration Period of the Load Reduction request
• Capacity payment
• Peak R26,70/MW (May-Aug between 6h00-09h00 & 17h00-20h00) (Sept-April between 9h00-12h00 & 18h00-21h00)
• Off-peak R11,21/MW (Including Week-ends, public holidays)
• Energy Payment –R1250/MWh
• CBL is a daily profile representing the amount of electricity the CUSTOMER would have consumed in each Integration Period for Week Days and Week-end Days
• Minimum 30 minute notification
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Event Performance Report
Notification
Event duration
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Customer Base Line calculation (CBL)
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Monthly Performance Report
Median Monthly performance
Total monthly energy
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Settlement Report
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Emergency and Fixed Time DR
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Demand Response Products (continued)
Emergency DR Fixed Time DR
Emergency Reserves Operational Reserves
When needed during emergencies Only for three Winter monthsOn the day or day ahead e-mail notification
Daily SMS reminder notification
30 minute integration metering 30 minute integration meteringNumber of events, participant’s availability dependent
One Event per day
Reduction measured against average of previous 3 similar days (CBL)
Reduction measured against previous winter weekdays profile
Performance measurement over 30 min Performance measurement over 30 min
Performance linked Energy Payment for load reduction at R1250/ MWh
Performance linked Energy Payment for load reduction at R1250/ MWh
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SELF GENERATION DR
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Demand Response Products (continue)
Self Generation DR
Emergency Reserves
30 minute notification
Pre-recorded phone call
30 minute integration metering
1 x 2 hour Event per day (may contract up to 4 or 6 or 16 hours per day)
100 Events per year
Generation measured against average of previous 3 similar days (CBL)Ref. point for scaling = 60 minutes before notification
Performance measurement over 30 min
Performance linked Capacity Payment for standby at: Capacity payment = R18, 75 per MW per hour scheduled
Energy Payment for self-generation up to R3000 / MWh
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Self Generation
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Event Performance Report
Notification
Event duration
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Customer Base Line calculation (CBL)
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Monthly Performance Report
Median Monthly performance
Total monthly energy
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Settlement Report
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DR General
• Performance needs to be >90% of Scheduled Capacity
• Reports generated by the Virtual Power Station
• Event Performance
• Monthly Performance
• Settlement/invoice
• Settlement report to Customer by 10th work day
• Invoiced by customer by 15th work day (Original invoice )
• Electronic payment by last business day