akkuvarastojen monitavoitteinen rooli - energiateollisuus · pdf file ·...
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Akkuvarastojen
monitavoitteinen rooli
energiajärjestelmässä
Ville Tikka – LUT
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LUT – Ville Tikka, 30.1.2018 - Helsinki
▪ Project management
− Ville Tikka, Jukka Lassila
▪ Tariffs and grid supporting applications
− Jouni Haapaniemi, Juha Haakana
▪ Optimization and market applications
− Nadezda Belonogova, Arun Narayanan
▪ Hardware and storage control, field tests
− Andrey Lana, Ville Tikka
▪ Supervising professors
− Jarmo Partanen, Samuli Honkapuro
LUT research group and research areas
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Partners and funders:
Sähkötutkimuspooli, STEK, Helen, Helen Electricity Network, Fingrid, Landis+Gyr, LUT
Budget and schedule:
140 k€, 12/2016 – 12/2017
Partners and funding
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Sähkötutkimuspooli
LUT – Ville Tikka, 30.1.2018 - Helsinki
▪ EC currently encourages 1) the increase of efficiency, flexibility, safety,
and power quality in distribution grids and 2) to fully exploit potential
advantages from RES, DG, DR, and Energy Storage Systems
▪ Stationary and mobile BESS play a significant role in modern energy
systems
▪ Multi-objective operation of distributed BESS could lead to lower socio-
economic costs, but might also cause conflicts of interest
Motivation
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Battery Cost Forecasts
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Nykvist, Björn, and Måns Nilsson. "Rapidly falling costs of battery packs
for electric vehicles." Nature Climate Change 5.4 (2015): 329-332.
LUT – Ville Tikka, 30.1.2018 - Helsinki
I. Implementation of control system?
II. How to optimize the stakeholder -specific utilization of an
individual BESS for different purposes (e.g. peak-cutting, control of
frequency and voltage, optimization of reactive power balance,
electricity trade in day-ahead, intraday, and ancillary markets, back-up
power for end-user / network, etc.)?
III. How to optimize the operation of a system with multiple battery
energy storage systems with different sizes, locations, and owners?
The main research questions
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Present project and further questions
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Implementation
LUT – Ville Tikka, 30.1.2018 - Helsinki
Test sites, (build on earlier projects)
Suvilahti, 2016
(Helen)
600 kWh, 1.2 MW
~15 000 LTO Li-ion cells
Green Campus, 2016
LUT
132 kWh, 188 kW
230 pcs LiFePO4
LVDC microgrid, 2014
(Suur-Savon Sähko/LUT)
2x30 kWh, 2x30 kW
2x235 pcs LiFePO4
V2G hybrid, 2014
LUT
1.3kWh, 27 kW (NiMH) + 4.3 kWh, 3 kW (LiFePO4)
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Test sites, (build on earlier projects)
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Distributed
energy storage
(customers)
LVDC
Suomenniemi
Mobile energy
storage
(customers)
LUT Green Campus
Centralized energy
storage
(secondary substation)
LUT Green CampusCentralized energy
storage
(primary substation)
Helen Suvilahti
LUT – Ville Tikka, 30.1.2018 - Helsinki11
Master
unit
LUT Storage &
EV charging
LVDC
Suomenniemi
Helen
Suvilahti
LUT – Ville Tikka, 30.1.2018 - Helsinki
Suomenniemi LVDC research site
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LUT – Ville Tikka, 30.1.2018 - Helsinki
LUT GreenCampus BESS
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LUT – Ville Tikka, 30.1.2018 - Helsinki
EV smart charging
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EN
ST
O
EC
V 1
00
Interface
unit
IEC Master
IEC62196-X, mode 3
Ensto, RS485Ethernet
• Smart charging based on local logic on interface unit
• FCR, power band, peak shaving, etc.
LUT – Ville Tikka, 30.1.2018 - Helsinki
EV smart charging example
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Helen Suvilahti
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• Helsinki Suvilahti
• Connected to 10 kV distribution grid
• Commercial storage utilized in research
LUT – Ville Tikka, 30.1.2018 - Helsinki
SOC, E, Ah,
Restrictions
P, Q
f
P
+fdb+fmax
-fdb -fmax
+Pmax
-Pmax
Data
resources
f, U
Central
control
algorithms
Task 1:
kWh, kW, €
Task 2:
kWh, kW, €
Task 3:
kWh, kW, €
Local control
algorithms
Local control
algorithms
Local control
algorithms
Local control
algorithms
≤ 1 sec,
≤ 15 min
≤ 1 sec,
≤ 15 min
≤ 1 sec,
≤ 15 min
≤ 1 sec,
≤ 15 min
Day,
1h,
15 min
f, U
f, U
f, U
P, Q
P, Q
P, Q
Pref, Eref / Parameters
of the task
Multi-objective control concept for
distributed BESS
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Multi-objective control concept for distributed
BESS (generic control architecture)
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Centralized,
data center /
cloud
computing
Decisions for next n
hours
Distributed on
site
Hardware
control on site
Centralized control
plan execution
Hardware control, U, I,
P, f, etc.Contr
ol syste
m c
om
munic
ation Data resources
• Electricity markets
• Weather forecasts
• Weather observations
• Etc.
Control system level Control system tasks Input data for control
Data resources• Local grid status
• Other locally
observed variables
Data resources• Grid frequency
• U, I, P
LUT – Ville Tikka, 30.1.2018 - Helsinki
Simulation tool: basic structure
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Second-resolutionHour-resolution Year-resolution = techno-economical resultsDay-resolution
Logics SLogics HLogics D Final results
Annual revenues
Operational cost
Profits
Benefit-cost ratio
Return on investment
Strategy to operateTuning input parameters;
Developing optimal bidding and
operational strategy
Input InputInput
LUT – Ville Tikka, 30.1.2018 - Helsinki
Relationship between local and system
tasks
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Conflict of objectives
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Monitoring interface example (campus)
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Monitoring interface example (LVDC site)
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LUT – Ville Tikka, 30.1.2018 - Helsinki
The project outcomes
I. Technical implementation of the control system
I. Fully functioning control architecture
II. Decision making algorithms based on real-time data
III. Visualization platform, etc.
II. Simulation tools developed
I. Enables simulation of different scenarios
II. Based on actual power system and market data
III. Algorithm to analyze conflict of objectives
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LUT – Ville Tikka, 30.1.2018 - Helsinki
Thank you!
Questions?
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Contact:
Ville Tikka