Taiwan Power Research Institute
Taiwan Power Company
Integrating Variable Renewable
Energy Resources into the Grid
12 May 2020
2
Basic Information of Taipower
Key Grid integration Issues
Summary
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3
4
5
3
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
:00
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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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10
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