Integrating Variable Renewable Energy Resources into the Grid...To provide adequate flexibility to...
Transcript of Integrating Variable Renewable Energy Resources into the Grid...To provide adequate flexibility to...
Taiwan Power Research Institute
Taiwan Power Company
Integrating Variable Renewable
Energy Resources into the Grid
12 May 2020
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Basic Information of Taipower
Key Grid integration Issues
Summary
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Power Plants and Power Grid
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Decrease coal-
fired power
Maximize
green energy
Achieve
nuclear-free
Energy Transformation for sustainability
Increase gas
power
Gas
Coal
REs
Nuclear
Lower CO2 emission
Provide Flexibility to
REs
Retire aging coal-fired power plants
No new coal-fired power plants after 2025
Decarbonization
RE100 initiative - to
go 100% renewable
Decommission of existing nuclear power plants as scheduled
Note : The estimated peak demand is 40 GW and annual electricity demand is 258 TWh in 2025.
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2025 2019 2025
Wind 830 6,700
Photovoltaic 3,598 20,000
Hydropower 2,092 2,150
Biomass 623 813
Geothermal 0 200
Fuel cell 0 60
Total 7,143 29,923
Note : The installed capacity of pumped hydro storage (2,602 MW) is exclusive.
Unit : MW
Targeted Capacity of Renewable Energy
RE is variable, intermittent, and
geographically dispersed and raises
the grid integration challenges.
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Information & Communication Infrastructure
Regulation & Workforce
Smart Dispatch &
Generation
AMI
Grid-scale ESSMarket Design
EVs
H / B / I
EMSPower Grid
Management Energy Storage
Demand Side
Management
Dynamic pricing /
TOU schemes
VPP/ DR programs
Transmission
DA / FA
DistributionAI Forecasting
Big Data Analysis
Rooftop PV
Focus on the six domains
SASA
Home ESS
On-shore
Wind
DERMSADMS
Off-shore Wind farm
Ground-type PV
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Physical Context:
◼ Storage
◼ Demand response
◼ Flexible gensets
◼ Sufficient reverses
◼ Interconnection
Institutional Context:
◼ RE and ESS related
regulation & grid
code
◼ Accurate forecast
of RE production
◼ New ancillary
services
◼ Improved market
design
◼ Faster dispatch/
energy market -
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
9,000
11,500
14,000
16,500
19,000
21,500
24,000
26,500
29,000
31,500
34,000
36,500
39,00000
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0 Time(5 mins)
PV System Load Net Load ESS+P_Hy Wind
Need rapidly ramp-up
/ ramp-down gensets
Unstable wind output in
winter due to Northeast
monsoon
Optimization of
pumped hydro gensets
Lo
ad
(MW
)
PV
(MW
)
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Expand &
Harden Grid
Infrastructure
DERs
Management
& Forecasting
Demand Side
& Storage
Integration
Rapidly
Dispatchable
Gensets
Phase I
<5%
Phase II
5-15%Phase III
15-25%Phase IV
>25%
2023~20252019~2022~2018 2026~2035
wind and solar production forecasts (dashed) Rapidly ramp-up / down
Market Design to supply the power system with flexibility
CCGT
Operate efficiently at a
Low minimum Level
Rates schemes VPP / DRFRR / AFC PFR / AGCForecast / DERMS / ADMSSA / DA / FA
Proactive Approach
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Classifi-
cationsFast Responsive Regulation Spinning Supplemental
Resp.
timems ~ secs secs ~ 3 mins
~ 10 mins(now 30 mins)
~ 30 mins(now 60 mins)
Duration3-15 mins
or more
15 mins
or more
1 hr
or more
2-4 hrs
or more
Year
20251000~1200MW ±1300MW 1000MW 1000MW
Sources
AFC w/ FRR Energy Storage
(590MW)
FRR DR(300 MW)
DR DR (100 MW)
Gensets
(PFR)
630~1110MW
Gensets(AGC)
710 MW
Gensets1000 MW
Gensets1000 MW
Fast Responsive
Regulation
Supplemental
Spinning
Note :
FRR (Fast Responsive Reserve ) : Active when system frequency drop to 59.70Hz
AFC (Automatic Frequency Control) : Active when system frequency drop to 59.50Hz
Ancillary Services in 2025
PFR (Primary Frequency Response )
AGC (Automatic Generation Control)
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2013
2018
2019
2020
2022
2024
202x2018 2020 2024
Deployment of 200k AMI meters Deployment of 3 million AMI meters
Deployment of 1 million AMI meters
400k meters per year 500k meters per yearRolling
review
Deployment of AMI
meters for all extra-
high and high voltage
24,624 customers
Day-ahead Demand Response program
FRR DR Pilot in Kinmen island
Deployment Roadmap
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0
100
200
300
400
500
600
2018 2019 2020 2021 2022 2023 2024 2025
2 5 9 1838
80
120
160
0 015
30
64
208
367
430
2 524
48
102
288
487
590
Rolling Forecast Model
Taipower-owned ESS Ancillary Service Total
Unit : MWMW
Year
We are here.
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◼ Renewable energy resources are mandated under the
government energy transformation target in Taiwan.
◼ To provide adequate flexibility to the power grid, the
flexibility options including physical power systems as
well as institutional systems are necessary to be
addressed at the same time.
◼ Taipower will continue to embrace emerging best practices
and lessons learned from other utilities or solution
providers concerning smart grid projects.
Danke schönThank You