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NEW APPROACHES FOR ENERGY MANAGEMENT AND GRID INTEGRATION FOR DECENTRALIZED ENERGY SYSTEMS
2018 Bucharest Symposium on Microgrids
Jan von Appen Fraunhofer Institute for Energy Economics and Energy System Technology IEE
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Side 2 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Interoperability
Open source Interfaces
Digitalization, power-heat-storage systems and e-mobility provide new opportunities for prosumer oriented energy management.
Flexibility Data security
Smart home
Building automation
Optimization
AI
IoT
Smart meter
Smart grid
ML Web services
Usability
Motivation (1)
Pictures: Tesla, SMA, Vaillant
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Side 3 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Grid integration
Changing drivers for sizing and operation of RES increase the complexity of planning and operation for all involved actors.
Changing feed-in tariff Changing price signals*
*Source: energy-charts
Continuous adjustment
according to PV
installation rates
Unclear if fixed FIT exists
after 52 GW cap for PV
has been reached (now:
44 GW)
Motivation (2)
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Side 4 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Demand flexibility
and efficiency
Smart grid
Energy transition
A threefold approach is prosed to enable better RES integration and improved energy efficiency for customers.
RES invest-ments
New incentives for demand flexibility
and automation of energy
management
Improved grid integration of RES and
microgrids through optimal control
Data-driven investment and
operation decisions in RES, microgrids
and e-mobility
Motivation (3)
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Side 5 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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social energy management
RES investment and operation
Agenda
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Side 6 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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social energy management
RES investment and operation
Agenda
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Side 7 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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sema (social energy management):
Platform enabling participants to optimize their energy consumption through
room heating management and electricity monitoring
Personalized feedback on energy usage and points for adjusted energy
consumption
Electricity demand:
High RES generation = high sema level
More points for energy consumption when sema levels are high
Motivation for higher demand flexibility according to RES generation
sema aims at motivating the adoption of different energy consumption patterns and facilitating energy savings.
sema – Introduction
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Side 8 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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sema – Setup and field test
sema runs on the open-energy management platform OGEMA developed by Fraunhofer IEE.
Source: Engel (2018)
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Side 9 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Occupancy
Adjusted demand
Up to 50 % more demand in certain evening hours
Comparison of electricity demand with low and high sema levels
sema – Results for electricity demand
sema incentivizes shifting demand according to RES generation, but is limited by participants‘ occupancies.
Time of day [h]
95% Confidence interval
Median Occupancy (secondary axis
Source: Engel (2018)
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Side 10 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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social energy management
RES investment and operation
Agenda
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Side 11 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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RES investment and operation – Approach
Tools for optimal sizing and operation of DER, microgrids and e-mobility
Forecasts for load and prices for model-predictive controller
Market and grid requirements
Load data (e.g. from sema)
Building and RES data
Investment and operational costs
DER sizing and operation
Input Optimization Results
User model
KPIs for prosumers, DNOs and utilities
Incentive evaluation and suggestion
Objection function
depending on use case
Case studies:
Optimal sizing and operation of residential PV systems with battery storage systems and heat pumps for different incentives
Interdependencies between incentive design, sizing, operation and grid integration
Optimally configured and operated decentralized energy systems provide a chance to generate value added for prosumers.
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Side 12 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Impact of reimbursement of PV
grid feed-in on PV system size:
Impact of BSS and heat pumps on
PV system size:
Rooftop PV potential might not fully captured in post-FIT world.
Sector coupling as a chance
How do changing incentives impact the sizing and grid integration of residential PV systems (especially once the FIT is close to zero)?
RES investment and operation – Results for investment
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Side 13 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Optimized control of decentralized power-heat-storage systems ensures such systems benefit from new incentives.
Combination of price and feed-in limit incentives to ensure a grid-friendly operation of decentralized power-heat-storage systems
New incentives for operation of PV BSS battery and heat pump operation (market prices, peak charges and feed-in limits)
RES investment and operation – Results for operation
Source: Appen (2018)
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Side 14 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Demand flexibility
and efficiency
Smart grid
Energy demand flexibility can only be achieved through the right mix of user-focus, optimal control and automation.
RES invest-ments
Summary and outlook
Optimization models for integrated planning and
operation of decentralized energy systems and microgrids:
Strategic stakeholder behavior and interdependencies
Automation of energy management:
Data analysis and integration via IoT
Integration into grid planning processes
User-focused approaches for energy efficiency and grid
integration:
New incentives and non-monetary approaches
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Side 15 Bucharest 2018 Symposium on Microgrids September 2018 Jan von Appen
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Dr. Jan von Appen
Head of Department Energy Management and Energy Efficiency
Coordinator of Business Unit Decentralized Energy Management
References
S. Engel, D. Nestle, E. Dörre, J. von Appen. “sema – Erkenntnisse aus dem Betrieb eines social energy management system“, 15. Symposium Energieinnovation, Graz, Feb. 2018.
J. von Appen. “Incentive design, sizing and grid integration of res-idential PV systems with heat pumps and battery storage systems”, 15th International Conference on the European Energy Market (EEM), Lodz, Jun. 2018.
www.ogema.org